Gordon Wichern

Gordon Wichern
Gordon's Quick Links

  • Biography

    Gordon's research interests are at the intersection of signal processing and machine learning applied to speech, music, and environmental sounds. Prior to joining MERL, Gordon worked at iZotope inc. developing audio signal processing software, and at MIT Lincoln Laboratory where he worked in radar target tracking.

  • Recent News & Events

    •  EVENT    MERL Contributes to ICASSP 2025
      Date: Sunday, April 6, 2025 - Friday, April 11, 2025
      Location: Hyderabad, India
      MERL Contacts: Wael H. Ali; Petros T. Boufounos; Radu Corcodel; François Germain; Chiori Hori; Siddarth Jain; Devesh K. Jha; Toshiaki Koike-Akino; Jonathan Le Roux; Yanting Ma; Hassan Mansour; Yoshiki Masuyama; Joshua Rapp; Diego Romeres; Anthony Vetro; Pu (Perry) Wang; Gordon Wichern
      Research Areas: Artificial Intelligence, Communications, Computational Sensing, Electronic and Photonic Devices, Machine Learning, Robotics, Signal Processing, Speech & Audio
      Brief
      • MERL has made numerous contributions to both the organization and technical program of ICASSP 2025, which is being held in Hyderabad, India from April 6-11, 2025.

        Sponsorship

        MERL is proud to be a Silver Patron of the conference and will participate in the student job fair on Thursday, April 10. Please join this session to learn more about employment opportunities at MERL, including openings for research scientists, post-docs, and interns.

        MERL is pleased to be the sponsor of two IEEE Awards that will be presented at the conference. We congratulate Prof. Björn Erik Ottersten, the recipient of the 2025 IEEE Fourier Award for Signal Processing, and Prof. Shrikanth Narayanan, the recipient of the 2025 IEEE James L. Flanagan Speech and Audio Processing Award. Both awards will be presented in-person at ICASSP by Anthony Vetro, MERL President & CEO.

        Technical Program

        MERL is presenting 15 papers in the main conference on a wide range of topics including source separation, sound event detection, sound anomaly detection, speaker diarization, music generation, robot action generation from video, indoor airflow imaging, WiFi sensing, Doppler single-photon Lidar, optical coherence tomography, and radar imaging. Another paper on spatial audio will be presented at the Generative Data Augmentation for Real-World Signal Processing Applications (GenDA) Satellite Workshop.

        MERL Researchers Petros Boufounos and Hassan Mansour will present a Tutorial on “Computational Methods in Radar Imaging” in the afternoon of Monday, April 7.

        Petros Boufounos will also be giving an industry talk on Thursday April 10 at 12pm, on “A Physics-Informed Approach to Sensing".

        About ICASSP

        ICASSP is the flagship conference of the IEEE Signal Processing Society, and the world's largest and most comprehensive technical conference focused on the research advances and latest technological development in signal and information processing. The event has been attracting more than 4000 participants each year.
    •  
    •  NEWS    MERL researchers present 7 papers at CDC 2024
      Date: December 16, 2024 - December 19, 2024
      Where: Milan, Italy
      MERL Contacts: Ankush Chakrabarty; Vedang M. Deshpande; Stefano Di Cairano; Abraham P. Vinod; Avishai Weiss; Gordon Wichern
      Research Areas: Artificial Intelligence, Control, Dynamical Systems, Machine Learning, Multi-Physical Modeling, Optimization, Robotics
      Brief
      • MERL researchers presented 7 papers at the recently concluded Conference on Decision and Control (CDC) 2024 in Milan, Italy. The papers covered a wide range of topics including safety shielding for stochastic model predictive control, reinforcement learning using expert observations, physics-constrained meta learning for positioning, variational-Bayes Kalman filtering, Bayesian measurement masks for GNSS positioning, divert-feasible lunar landing, and centering and stochastic control using constrained zonotopes.

        As a sponsor of the conference, MERL maintained a booth for open discussions with researchers and students, and hosted a special session to discuss highlights of MERL research and work philosophy.

        In addition, Ankush Chakrabarty (Principal Research Scientist, Multiphysical Systems Team) was an invited speaker in the pre-conference Workshop on "Learning Dynamics From Data" where he gave a talk on few-shot meta-learning for black-box identification using data from similar systems.
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    See All News & Events for Gordon

  • Awards

    •  AWARD    MERL team wins the Listener Acoustic Personalisation (LAP) 2024 Challenge
      Date: August 29, 2024
      Awarded to: Yoshiki Masuyama, Gordon Wichern, Francois G. Germain, Christopher Ick, and Jonathan Le Roux
      MERL Contacts: François Germain; Jonathan Le Roux; Gordon Wichern; Yoshiki Masuyama
      Research Areas: Artificial Intelligence, Machine Learning, Speech & Audio
      Brief
      • MERL's Speech & Audio team ranked 1st out of 7 teams in Task 2 of the 1st SONICOM Listener Acoustic Personalisation (LAP) Challenge, which focused on "Spatial upsampling for obtaining a high-spatial-resolution HRTF from a very low number of directions". The team was led by Yoshiki Masuyama, and also included Gordon Wichern, Francois Germain, MERL intern Christopher Ick, and Jonathan Le Roux.

        The LAP Challenge workshop and award ceremony was hosted by the 32nd European Signal Processing Conference (EUSIPCO 24) on August 29, 2024 in Lyon, France. Yoshiki Masuyama presented the team's method, "Retrieval-Augmented Neural Field for HRTF Upsampling and Personalization", and received the award from Prof. Michele Geronazzo (University of Padova, IT, and Imperial College London, UK), Chair of the Challenge's Organizing Committee.

        The LAP challenge aims to explore challenges in the field of personalized spatial audio, with the first edition focusing on the spatial upsampling and interpolation of head-related transfer functions (HRTFs). HRTFs with dense spatial grids are required for immersive audio experiences, but their recording is time-consuming. Although HRTF spatial upsampling has recently shown remarkable progress with approaches involving neural fields, HRTF estimation accuracy remains limited when upsampling from only a few measured directions, e.g., 3 or 5 measurements. The MERL team tackled this problem by proposing a retrieval-augmented neural field (RANF). RANF retrieves a subject whose HRTFs are close to those of the target subject at the measured directions from a library of subjects. The HRTF of the retrieved subject at the target direction is fed into the neural field in addition to the desired sound source direction. The team also developed a neural network architecture that can handle an arbitrary number of retrieved subjects, inspired by a multi-channel processing technique called transform-average-concatenate.
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    •  AWARD    MERL team wins the Audio-Visual Speech Enhancement (AVSE) 2023 Challenge
      Date: December 16, 2023
      Awarded to: Zexu Pan, Gordon Wichern, Yoshiki Masuyama, Francois Germain, Sameer Khurana, Chiori Hori, and Jonathan Le Roux
      MERL Contacts: François Germain; Chiori Hori; Jonathan Le Roux; Gordon Wichern; Yoshiki Masuyama
      Research Areas: Artificial Intelligence, Machine Learning, Speech & Audio
      Brief
      • MERL's Speech & Audio team ranked 1st out of 12 teams in the 2nd COG-MHEAR Audio-Visual Speech Enhancement Challenge (AVSE). The team was led by Zexu Pan, and also included Gordon Wichern, Yoshiki Masuyama, Francois Germain, Sameer Khurana, Chiori Hori, and Jonathan Le Roux.

        The AVSE challenge aims to design better speech enhancement systems by harnessing the visual aspects of speech (such as lip movements and gestures) in a manner similar to the brain’s multi-modal integration strategies. MERL’s system was a scenario-aware audio-visual TF-GridNet, that incorporates the face recording of a target speaker as a conditioning factor and also recognizes whether the predominant interference signal is speech or background noise. In addition to outperforming all competing systems in terms of objective metrics by a wide margin, in a listening test, MERL’s model achieved the best overall word intelligibility score of 84.54%, compared to 57.56% for the baseline and 80.41% for the next best team. The Fisher’s least significant difference (LSD) was 2.14%, indicating that our model offered statistically significant speech intelligibility improvements compared to all other systems.
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    •  AWARD    MERL Intern and Researchers Win ICASSP 2023 Best Student Paper Award
      Date: June 9, 2023
      Awarded to: Darius Petermann, Gordon Wichern, Aswin Subramanian, Jonathan Le Roux
      MERL Contacts: Jonathan Le Roux; Gordon Wichern
      Research Areas: Artificial Intelligence, Machine Learning, Speech & Audio
      Brief
      • Former MERL intern Darius Petermann (Ph.D. Candidate at Indiana University) has received a Best Student Paper Award at the 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2023) for the paper "Hyperbolic Audio Source Separation", co-authored with MERL researchers Gordon Wichern and Jonathan Le Roux, and former MERL researcher Aswin Subramanian. The paper presents work performed during Darius's internship at MERL in the summer 2022. The paper introduces a framework for audio source separation using embeddings on a hyperbolic manifold that compactly represent the hierarchical relationship between sound sources and time-frequency features. Additionally, the code associated with the paper is publicly available at https://github.com/merlresearch/hyper-unmix.

        ICASSP is the flagship conference of the IEEE Signal Processing Society (SPS). ICASSP 2023 was held in the Greek island of Rhodes from June 04 to June 10, 2023, and it was the largest ICASSP in history, with more than 4000 participants, over 6128 submitted papers and 2709 accepted papers. Darius’s paper was first recognized as one of the Top 3% of all papers accepted at the conference, before receiving one of only 5 Best Student Paper Awards during the closing ceremony.
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    •  AWARD    Joint CMU-MERL team wins DCASE2023 Challenge on Automated Audio Captioning
      Date: June 1, 2023
      Awarded to: Shih-Lun Wu, Xuankai Chang, Gordon Wichern, Jee-weon Jung, Francois Germain, Jonathan Le Roux, Shinji Watanabe
      MERL Contacts: François Germain; Jonathan Le Roux; Gordon Wichern
      Research Areas: Artificial Intelligence, Machine Learning, Speech & Audio
      Brief
      • A joint team consisting of members of CMU Professor and MERL Alumn Shinji Watanabe's WavLab and members of MERL's Speech & Audio team ranked 1st out of 11 teams in the DCASE2023 Challenge's Task 6A "Automated Audio Captioning". The team was led by student Shih-Lun Wu and also featured Ph.D. candidate Xuankai Chang, Postdoctoral research associate Jee-weon Jung, Prof. Shinji Watanabe, and MERL researchers Gordon Wichern, Francois Germain, and Jonathan Le Roux.

        The IEEE AASP Challenge on Detection and Classification of Acoustic Scenes and Events (DCASE Challenge), started in 2013, has been organized yearly since 2016, and gathers challenges on multiple tasks related to the detection, analysis, and generation of sound events. This year, the DCASE2023 Challenge received over 428 submissions from 123 teams across seven tasks.

        The CMU-MERL team competed in the Task 6A track, Automated Audio Captioning, which aims at generating informative descriptions for various sounds from nature and/or human activities. The team's system made strong use of large pretrained models, namely a BEATs transformer as part of the audio encoder stack, an Instructor Transformer encoding ground-truth captions to derive an audio-text contrastive loss on the audio encoder, and ChatGPT to produce caption mix-ups (i.e., grammatical and compact combinations of two captions) which, together with the corresponding audio mixtures, increase not only the amount but also the complexity and diversity of the training data. The team's best submission obtained a SPIDEr-FL score of 0.327 on the hidden test set, largely outperforming the 2nd best team's 0.315.
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    •  AWARD    Best Poster Award and Best Video Award at the International Society for Music Information Retrieval Conference (ISMIR) 2020
      Date: October 15, 2020
      Awarded to: Ethan Manilow, Gordon Wichern, Jonathan Le Roux
      MERL Contacts: Jonathan Le Roux; Gordon Wichern
      Research Areas: Artificial Intelligence, Machine Learning, Speech & Audio
      Brief
      • Former MERL intern Ethan Manilow and MERL researchers Gordon Wichern and Jonathan Le Roux won Best Poster Award and Best Video Award at the 2020 International Society for Music Information Retrieval Conference (ISMIR 2020) for the paper "Hierarchical Musical Source Separation". The conference was held October 11-14 in a virtual format. The Best Poster Awards and Best Video Awards were awarded by popular vote among the conference attendees.

        The paper proposes a new method for isolating individual sounds in an audio mixture that accounts for the hierarchical relationship between sound sources. Many sounds we are interested in analyzing are hierarchical in nature, e.g., during a music performance, a hi-hat note is one of many such hi-hat notes, which is one of several parts of a drumkit, itself one of many instruments in a band, which might be playing in a bar with other sounds occurring. Inspired by this, the paper re-frames the audio source separation problem as hierarchical, combining similar sounds together at certain levels while separating them at other levels, and shows on a musical instrument separation task that a hierarchical approach outperforms non-hierarchical models while also requiring less training data. The paper, poster, and video can be seen on the paper page on the ISMIR website.
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    See All Awards for MERL

  • Research Highlights

  • MERL Publications

    •  Paissan, F., Wichern, G., Masuyama, Y., Aihara, R., Germain, F.G., Saijo, K., Le Roux, J., "FasTUSS: Faster Task-Aware Unified Source Separation", arXiv, July 2025.
      BibTeX arXiv
      • @article{Paissan2025jul,
      • author = {Paissan, Francesco and Wichern, Gordon and Masuyama, Yoshiki and Aihara, Ryo and Germain, François G and Saijo, Kohei and {Le Roux}, Jonathan},
      • title = {{FasTUSS: Faster Task-Aware Unified Source Separation}},
      • journal = {arXiv},
      • year = 2025,
      • month = jul,
      • url = {https://www.arxiv.org/abs/2507.11435}
      • }
    •  Masuyama, Y., Germain, F.G., Wichern, G., Ick, C., Le Roux, J., "Physics-Informed Direction-Aware Neural Acoustic Fields", arXiv, July 2025.
      BibTeX arXiv
      • @article{Masuyama2025jul,
      • author = {Masuyama, Yoshiki and Germain, François G and Wichern, Gordon and Ick, Christopher and {Le Roux}, Jonathan},
      • title = {{Physics-Informed Direction-Aware Neural Acoustic Fields}},
      • journal = {arXiv},
      • year = 2025,
      • month = jul,
      • url = {https://arxiv.org/abs/2507.06826}
      • }
    •  Hussein, A., Khurana, S., Wichern, G., Germain, F.G., Le Roux, J., "HASRD: Hierarchical Acoustic and Semantic Representation Disentanglement", arXiv, June 2025.
      BibTeX arXiv
      • @article{Hussein2025jun,
      • author = {Hussein, Amir and Khurana, Sameer and Wichern, Gordon and Germain, François G and {Le Roux}, Jonathan},
      • title = {{HASRD: Hierarchical Acoustic and Semantic Representation Disentanglement}},
      • journal = {arXiv},
      • year = 2025,
      • month = jun,
      • url = {https://www.arxiv.org/abs/2506.00843}
      • }
    •  Park, Y.-J., Germain, F.G., Liu, J., Wang, Y., Koike-Akino, T., Wichern, G., Azizan, N., Laughman, C.R., Chakrabarty, A., "Probabilistic Forecasting for Building Energy Systems using Time-Series Foundation Models", arXiv, May 2025.
      BibTeX arXiv
      • @article{Park2025may,
      • author = {Park, Young-Jin and Germain, François G and Liu, Jing and Wang, Ye and Koike-Akino, Toshiaki and Wichern, Gordon and Azizan, Navid and Laughman, Christopher R. and Chakrabarty, Ankush},
      • title = {{Probabilistic Forecasting for Building Energy Systems using Time-Series Foundation Models}},
      • journal = {arXiv},
      • year = 2025,
      • month = may,
      • url = {https://arxiv.org/abs/2506.00630}
      • }
    •  Ick, C., Wichern, G., Masuyama, Y., Germain, F.G., Le Roux, J., "Direction-Aware Neural Acoustic Fields for Few-Shot Interpolation of Ambisonic Impulse Responses", arXiv, May 2025.
      BibTeX arXiv
      • @article{Ick2025may,
      • author = {Ick, Christopher and Wichern, Gordon and Masuyama, Yoshiki and Germain, François G and {Le Roux}, Jonathan},
      • title = {{Direction-Aware Neural Acoustic Fields for Few-Shot Interpolation of Ambisonic Impulse Responses}},
      • journal = {arXiv},
      • year = 2025,
      • month = may,
      • url = {https://arxiv.org/abs/2505.13617}
      • }
    See All MERL Publications for Gordon

  • Other Publications

    •  G. Wichern and A. Lukin, "Low-Latency approximation of bidirectional recurrent networks for speech denoising", 2017 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA), Oct 2017, pp. 66-70.
      BibTeX
      • @Inproceedings{8169996,
      • author = {Wichern, G. and Lukin, A.},
      • title = {Low-Latency approximation of bidirectional recurrent networks for speech denoising},
      • booktitle = {2017 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA)},
      • year = 2017,
      • pages = {66--70},
      • month = {Oct}
      • }
    •  G. Wichern, H. Robertson and A. Wishnick, "Quantitative Analysis of Masking in Multitrack Mixes Using Loudness Loss", Sep 2016, Audio Engineering Society Convention 141.
      BibTeX External
      • @Conference{wichern2016quantitative,
      • author = {Wichern, G. and Robertson, H. and Wishnick, A.},
      • title = {Quantitative Analysis of Masking in Multitrack Mixes Using Loudness Loss},
      • booktitle = {Audio Engineering Society Convention 141},
      • year = 2016,
      • month = {Sep},
      • url = {http://www.aes.org/e-lib/browse.cfm?elib=18450}
      • }
    •  G. Wichern, A. Wishnick, A. Lukin and H. Robertson, "Comparison of Loudness Features for Automatic Level Adjustment in Mixing", Oct 2015, Audio Engineering Society Convention 139.
      BibTeX External
      • @Conference{wichern2015comparison,
      • author = {Wichern, G. and Wishnick, A. and Lukin, A. and Robertson, H.},
      • title = {Comparison of Loudness Features for Automatic Level Adjustment in Mixing},
      • booktitle = {Audio Engineering Society Convention 139},
      • year = 2015,
      • month = {Oct},
      • url = {http://www.aes.org/e-lib/browse.cfm?elib=17928}
      • }
    •  M. Yamada, G. Wichern, K. Kondo, M. Sugiyama and H. Sawada, "Noise adaptive optimization of matrix initialization for frequency-domain independent component analysis", Digital Signal Processing, Vol. 23, No. 1, pp. 1-8, 2013.
      BibTeX
      • @Article{yamada2013noise,
      • author = {Yamada, M. and Wichern, G. and Kondo, K. and Sugiyama, M. and Sawada, H.},
      • title = {Noise adaptive optimization of matrix initialization for frequency-domain independent component analysis},
      • journal = {Digital Signal Processing},
      • year = 2013,
      • volume = 23,
      • number = 1,
      • pages = {1--8},
      • publisher = {Academic Press}
      • }
    •  M. Yamada, M. Sugiyama, G. Wichern and J. Simm, "Improving the accuracy of least-squares probabilistic classifiers", IEICE transactions on information and systems, Vol. 94, No. 6, pp. 1337-1340, 2011.
      BibTeX
      • @Article{yamada2011improving,
      • author = {Yamada, M. and Sugiyama, M. and Wichern, G. and Simm, J.},
      • title = {Improving the accuracy of least-squares probabilistic classifiers},
      • journal = {IEICE transactions on information and systems},
      • year = 2011,
      • volume = 94,
      • number = 6,
      • pages = {1337--1340},
      • publisher = {The Institute of Electronics, Information and Communication Engineers}
      • }
    •  M. Shah, G. Wichern, A. Spanias and H. Thornburg, "Audio content-based feature extraction algorithms using J-DSP for arts, media and engineering courses", 2010 IEEE Frontiers in Education Conference (FIE), Oct 2010, pp. T1F-1-T1F-6.
      BibTeX
      • @Inproceedings{5673157,
      • author = {Shah, M. and Wichern, G. and Spanias, A. and Thornburg, H.},
      • title = {Audio content-based feature extraction algorithms using J-DSP for arts, media and engineering courses},
      • booktitle = {2010 IEEE Frontiers in Education Conference (FIE)},
      • year = 2010,
      • pages = {T1F--1--T1F--6},
      • month = {Oct}
      • }
    •  G. Wichern, J. Xue, H. Thornburg, B. Mechtley and A. Spanias, "Segmentation, Indexing, and Retrieval for Environmental and Natural Sounds", IEEE Transactions on Audio, Speech, and Language Processing, Vol. 18, No. 3, pp. 688-707, March 2010.
      BibTeX
      • @Article{5410056,
      • author = {Wichern, G. and Xue, J. and Thornburg, H. and Mechtley, B. and Spanias, A.},
      • title = {Segmentation, Indexing, and Retrieval for Environmental and Natural Sounds},
      • journal = {IEEE Transactions on Audio, Speech, and Language Processing},
      • year = 2010,
      • volume = 18,
      • number = 3,
      • pages = {688--707},
      • month = mar
      • }
    •  M. Yamada, M. Sugiyama and G. Wichern, "Direct importance estimation with probabilistic principal component analyzers", 2010 IEEE International Conference on Acoustics, Speech and Signal Processing, March 2010, pp. 1962-1965.
      BibTeX
      • @Inproceedings{5495290,
      • author = {Yamada, M. and Sugiyama, M. and Wichern, G.},
      • title = {Direct importance estimation with probabilistic principal component analyzers},
      • booktitle = {2010 IEEE International Conference on Acoustics, Speech and Signal Processing},
      • year = 2010,
      • pages = {1962--1965},
      • month = mar
      • }
    •  M. Yamada, M. Sugiyama, G. Wichern and T. Matsui, "Acceleration of sequence kernel computation for real-time speaker identification", 2010 IEEE International Conference on Acoustics, Speech and Signal Processing, March 2010, pp. 1626-1629.
      BibTeX
      • @Inproceedings{5495542,
      • author = {Yamada, M. and Sugiyama, M. and Wichern, G. and Matsui, T.},
      • title = {Acceleration of sequence kernel computation for real-time speaker identification},
      • booktitle = {2010 IEEE International Conference on Acoustics, Speech and Signal Processing},
      • year = 2010,
      • pages = {1626--1629},
      • month = mar
      • }
    •  G. Wichern, M. Yamada, H. Thornburg, M. Sugiyama and A. Spanias, "Automatic audio tagging using covariate shift adaptation", 2010 IEEE International Conference on Acoustics, Speech and Signal Processing, March 2010, pp. 253-256.
      BibTeX
      • @Inproceedings{5495973,
      • author = {Wichern, G. and Yamada, M. and Thornburg, H. and Sugiyama, M. and Spanias, A.},
      • title = {Automatic audio tagging using covariate shift adaptation},
      • booktitle = {2010 IEEE International Conference on Acoustics, Speech and Signal Processing},
      • year = 2010,
      • pages = {253--256},
      • month = mar
      • }
    •  B. Mechtley, G. Wichern, H. Thornburg and A. Spanias, "Combining semantic, social, and acoustic similarity for retrieval of environmental sounds", 2010 IEEE International Conference on Acoustics, Speech and Signal Processing, March 2010, pp. 2402-2405.
      BibTeX
      • @Inproceedings{5496225,
      • author = {Mechtley, B. and Wichern, G. and Thornburg, H. and Spanias, A.},
      • title = {Combining semantic, social, and acoustic similarity for retrieval of environmental sounds},
      • booktitle = {2010 IEEE International Conference on Acoustics, Speech and Signal Processing},
      • year = 2010,
      • pages = {2402--2405},
      • month = mar
      • }
    •  A. Fink, B. Mechtley, G. Wichern, J. Liu, H. Thornburg, A. Spanias and G. Coleman, "Re-Sonification of Geographic Sound Activity using Acoustic, Semantic and Social Information", Proceedings of the 16th International Conference on Auditory Display (ICAD2010), 2010.
      BibTeX
      • @Inproceedings{fink2010re,
      • author = {Fink, A. and Mechtley, B. and Wichern, G. and Liu, J. and Thornburg, H. and Spanias, A. and Coleman, G.},
      • title = {Re-Sonification of Geographic Sound Activity using Acoustic, Semantic and Social Information},
      • booktitle = {Proceedings of the 16th International Conference on Auditory Display (ICAD2010)},
      • year = 2010,
      • organization = {Georgia Institute of Technology}
      • }
    •  G. Wichern, B. Mechtley, A. Fink, H. Thornburg and A. Spanias, "An ontological framework for retrieving environmental sounds using semantics and acoustic content", EURASIP Journal on Audio, Speech, and Music Processing, Vol. 2010, No. 1, pp. 192363, 2010.
      BibTeX
      • @Article{wichern2010ontological,
      • author = {Wichern, G. and Mechtley, B. and Fink, A. and Thornburg, H. and Spanias, A.},
      • title = {An ontological framework for retrieving environmental sounds using semantics and acoustic content},
      • journal = {EURASIP Journal on Audio, Speech, and Music Processing},
      • year = 2010,
      • volume = 2010,
      • number = 1,
      • pages = 192363,
      • publisher = {Springer International Publishing}
      • }
    •  M. Yamada, M. Sugiyama, G. Wichern and J. Simm, "Direct importance estimation with a mixture of probabilistic principal component analyzers", IEICE Transactions on Information and Systems, Vol. 93, No. 10, pp. 2846-2849, 2010.
      BibTeX
      • @Article{yamada2010direct,
      • author = {Yamada, M. and Sugiyama, M. and Wichern, G. and Simm, J.},
      • title = {Direct importance estimation with a mixture of probabilistic principal component analyzers},
      • journal = {IEICE Transactions on Information and Systems},
      • year = 2010,
      • volume = 93,
      • number = 10,
      • pages = {2846--2849},
      • publisher = {The Institute of Electronics, Information and Communication Engineers}
      • }
    •  G. Wichern, H. Thornburg and A. Spanias, "Unifying semantic and content-based approaches for retrieval of environmental sounds", 2009 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, Oct 2009, pp. 13-16.
      BibTeX
      • @Inproceedings{5346493,
      • author = {Wichern, G. and Thornburg, H. and Spanias, A.},
      • title = {Unifying semantic and content-based approaches for retrieval of environmental sounds},
      • booktitle = {2009 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics},
      • year = 2009,
      • pages = {13--16},
      • month = {Oct}
      • }
    •  G. Wichern, H. Kwon, A. Spanias, A. Fink and H. Thornburg, "Continuous observation and archival of acoustic scenes using wireless sensor networks", 2009 16th International Conference on Digital Signal Processing, July 2009, pp. 1-6.
      BibTeX
      • @Inproceedings{5201082,
      • author = {Wichern, G. and Kwon, H. and Spanias, A. and Fink, A. and Thornburg, H.},
      • title = {Continuous observation and archival of acoustic scenes using wireless sensor networks},
      • booktitle = {2009 16th International Conference on Digital Signal Processing},
      • year = 2009,
      • pages = {1--6},
      • month = jul
      • }
    •  G. Wichern, H. Thornburg and A. Spanias, "Multi-channel audio segmentation for continuous observation and archival of large spaces", 2009 IEEE International Conference on Acoustics, Speech and Signal Processing, April 2009, pp. 237-240.
      BibTeX
      • @Inproceedings{4959564,
      • author = {Wichern, G. and Thornburg, H. and Spanias, A.},
      • title = {Multi-channel audio segmentation for continuous observation and archival of large spaces},
      • booktitle = {2009 IEEE International Conference on Acoustics, Speech and Signal Processing},
      • year = 2009,
      • pages = {237--240},
      • month = apr
      • }
    •  J. Xue, G. Wichern, H. Thornburg and A. Spanias, "Fast query by example of environmental sounds via robust and efficient cluster-based indexing", 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, March 2008, pp. 5-8.
      BibTeX
      • @Inproceedings{4517532,
      • author = {Xue, J. and Wichern, G. and Thornburg, H. and Spanias, A.},
      • title = {Fast query by example of environmental sounds via robust and efficient cluster-based indexing},
      • booktitle = {2008 IEEE International Conference on Acoustics, Speech and Signal Processing},
      • year = 2008,
      • pages = {5--8},
      • month = mar
      • }
    •  G. Wichern, J. Xue, H. Thornburg and A. Spanias, "Distortion-Aware Query-by-Example for Environmental Sounds", 2007 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, Oct 2007, pp. 335-338.
      BibTeX
      • @Inproceedings{4393051,
      • author = {Wichern, G. and Xue, J. and Thornburg, H. and Spanias, A.},
      • title = {Distortion-Aware Query-by-Example for Environmental Sounds},
      • booktitle = {2007 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics},
      • year = 2007,
      • pages = {335--338},
      • month = {Oct}
      • }
    •  M. McCarron, M. R. Azimi-Sadjadi, G. Wichem and M. Mungiole, "An Operationally Adaptive System for Rapid Acoustic Transmission Loss Prediction", 2007 International Joint Conference on Neural Networks, Aug 2007, pp. 2262-2267.
      BibTeX
      • @Inproceedings{4371310,
      • author = {McCarron, M. and Azimi-Sadjadi, M. R. and Wichem, G. and Mungiole, M.},
      • title = {An Operationally Adaptive System for Rapid Acoustic Transmission Loss Prediction},
      • booktitle = {2007 International Joint Conference on Neural Networks},
      • year = 2007,
      • pages = {2262--2267},
      • month = {Aug}
      • }
    •  G. Wichern, H. Thornburg, B. Mechtley, A. Fink, K. Tu and A. Spanias, "Robust Multi-Features Segmentation and Indexing for Natural Sound Environments", 2007 International Workshop on Content-Based Multimedia Indexing, June 2007, pp. 69-76.
      BibTeX
      • @Inproceedings{4275057,
      • author = {Wichern, G. and Thornburg, H. and Mechtley, B. and Fink, A. and Tu, K. and Spanias, A.},
      • title = {Robust Multi-Features Segmentation and Indexing for Natural Sound Environments},
      • booktitle = {2007 International Workshop on Content-Based Multimedia Indexing},
      • year = 2007,
      • pages = {69--76},
      • month = jun
      • }
    •  G. Wichern, M. R. Azimi-Sadjadi and M. Mungiole, "Environmentally adaptive acoustic transmission loss prediction in turbulent and nonturbulent atmospheres", Neural Networks, Vol. 20, No. 4, pp. 484 - 497, 2007.
      BibTeX External
      • @Article{WICHERN2007484,
      • author = {Wichern, G. and Azimi-Sadjadi, M. R. and Mungiole, M.},
      • title = {Environmentally adaptive acoustic transmission loss prediction in turbulent and nonturbulent atmospheres},
      • journal = {Neural Networks},
      • year = 2007,
      • volume = 20,
      • number = 4,
      • pages = {484 -- 497},
      • note = {Computational Intelligence in Earth and Environmental Sciences},
      • url = {http://www.sciencedirect.com/science/article/pii/S089360800700055X}
      • }
    •  G. Wichern, M. R. Azimi-Sadjadi and M. Mungiole, "An Environmentally Adaptive System for Rapid Acoustic Transmission Loss Prediction", The 2006 IEEE International Joint Conference on Neural Network Proceedings, 2006, pp. 5118-5125.
      BibTeX
      • @Inproceedings{1716812,
      • author = {Wichern, G. and Azimi-Sadjadi, M. R. and Mungiole, M.},
      • title = {An Environmentally Adaptive System for Rapid Acoustic Transmission Loss Prediction},
      • booktitle = {The 2006 IEEE International Joint Conference on Neural Network Proceedings},
      • year = 2006,
      • pages = {5118--5125}
      • }
    •  MR Azimi-Sadjadi, Y Jiang and G Wichern, "Properties of randomly distributed sparse arrays", Proc. SPIE, 2006, vol. 6201.
      BibTeX
      • @Inproceedings{azimi2006properties,
      • author = {Azimi-Sadjadi, MR and Jiang, Y and Wichern, G},
      • title = {Properties of randomly distributed sparse arrays},
      • booktitle = {Proc. SPIE},
      • year = 2006,
      • volume = 6201
      • }
    •  MR Azimi-Sadjadi, A Pezeshki, LL Scharf and G Wichern, "Unattended sparse acoustic array configurations and beamforming algorithms", Proc. SPIE, 2005, vol. 5796, pp. 40-51.
      BibTeX
      • @Inproceedings{azimi2005unattended,
      • author = {Azimi-Sadjadi, MR and Pezeshki, A and Scharf, LL and Wichern, G},
      • title = {Unattended sparse acoustic array configurations and beamforming algorithms},
      • booktitle = {Proc. SPIE},
      • year = 2005,
      • volume = 5796,
      • pages = {40--51}
      • }

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  • MERL Issued Patents

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      Inventors: Le Roux, Jonathan; Watanabe, Shinji; Hershey, John R.; Wichern, Gordon P
      Patent No.: 10,726,856
      Issue Date: Jul 28, 2020
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      Issue Date: Jan 7, 2020
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