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External ear transfer function modeling: A beamforming approach

Jiashu Chen, Barry D. Van Veen, Kurt E. Hecox
1992 Journal of the Acoustical Society of America  
In this article, a beamformer is proposed as a functional model for the spatial and temporal filtering characteristics of the external ear.  ...  The effectiveness of the model is demonstrated by designing a beamformer of several hundred weights that duplicates and interpolates the measured external ear response of a cat over broad ranges of frequency  ...  ACKNOWLEDGMENTS We express our deep appreciation to our colleagues in the Department of Neurophysiology, University of Wisconsin-Madison.  ... 
doi:10.1121/1.405241 pmid:1401538 fatcat:bwlwyqi25zdmneq3ebls65kphq

Head-related transfer function (HRTF) synthesis based on a three-dimensional array model and singular value decomposition

Mingsian R. Bai, Kwuen-Yieng Ou
2005 Journal of Sound and Vibration  
An external ear model based on a three-dimensional array beamformer is presented to synthesize the head-related transfer functions (HRTFs).  ...  In addition, Chen et al. also derived a broadband beamformer model from measured HRTFs [12] . In their method, the beamformer weights are chosen according to the characteristics of the external ears.  ...  Acknowledgements The work was supported by the Nation Science Council in Taiwan, Republic of China, under the project number NSC 91-2212-E009-032.  ... 
doi:10.1016/j.jsv.2004.02.007 fatcat:jamdtme7fjbxfiugho4dj5crbu

2019 Index IEEE/ACM Transactions on Audio, Speech, and Language Processing Vol. 27

2019 IEEE/ACM Transactions on Audio Speech and Language Processing  
Bilbao, S., +, TASLP Feb. 2019 415-428 Efficient Representation and Sparse Sampling of Head-Related Transfer Functions Using Phase-Correction Based on Ear Alignment.  ...  ., +, TASLP April 2019 730-741 On the Influence of Transfer Function Noise on Sound Zone Control in a Room.  ... 
doi:10.1109/taslp.2020.2971902 fatcat:j66uwjyqlfbmtgda6zhzlswpva

Table of Contents

2021 IEEE/ACM Transactions on Audio Speech and Language Processing  
Narayanan Sensor Selection for Relative Acoustic Transfer Function Steered Linearly-Constrained Beamformers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  ...  Roux Learning Deep Direct-Path Relative Transfer Function for Binaural Sound Source Localization .  ... 
doi:10.1109/taslp.2021.3137064 fatcat:rpka3f2bhjh37c7pkhiowyndhm

2021 Index IEEE/ACM Transactions on Audio, Speech, and Language Processing Vol. 29

2021 IEEE/ACM Transactions on Audio Speech and Language Processing  
The primary entry includes the coauthors' names, the title of the paper or other item, and its location, specified by the publication abbreviation, year, and inclusive pagination.  ...  Mertins, A., +, TASLP 2021 489-502 Sensor Selection for Relative Acoustic Transfer Function Steered Linear-ly-Constrained Beamformers.  ...  ., +, TASLP 2021 3668-3678 Sensor Selection for Relative Acoustic Transfer Function Steered Linearly-Constrained Beamformers.  ... 
doi:10.1109/taslp.2022.3147096 fatcat:7nl52k7sjfalbhpxtum3y5nmje


2011 Principles and Applications of Spatial Hearing  
Reproduction of auditory scenes is important for many applications.  ...  We describe several contributions to the capture and recreation of spatial audio that have been made over the past few years by the authors.  ...  23 The group delay function is the negative of the derivate of the signal phase spectrum and can be computed directly via a combination of two Fourier transforms.  ... 
doi:10.1142/9789814299312_0027 fatcat:xbhc6iyz3zcrpd6l4t5lh43kou

Speech Signal Enhancement in Cocktail Party Scenarios by Deep Learning based Virtual Sensing of Head-Mounted Microphones

Tim Fischer, Marco Caversaccio, Wilhelm Wimmer
2021 Hearing Research  
We measured and evaluated the impact of the number and spatial arrangement of hearing aid or head-mounted microphones on the performance of the established Minimum Variance Distortionless Response beamformer  ...  To mimic this human hearing ability for people with hearing loss, scientists integrate beamforming algorithms into the signal processing path of hearing aids or implants' audio processors.  ...  functions were the relative transfer 77 functions (RTFs) between the microphones, which in turn were determined 78 by head related transfer functions (HRTFs) measurements using frequency 79 sweeps in  ... 
doi:10.1016/j.heares.2021.108294 pmid:34182232 fatcat:te6gzp4cxnbmtg6f4hrqjj2orq

Sound Source Separation [chapter]

G. Evangelista, S. Marchand, M. D. Plumbley, E. Vincent
2011 DAFX: Digital Audio Effects  
Acknowledgements The authors would like to thank Beiming Wang, Harald Viste and Mathieu Lagrange for assistance with some of the figures in this chapter.  ...  It can be shown [RVE10] that the performance of the averaged model is comparable with that of the method based on individual transfer functions.  ...  Thus, via the Cartesian representation of complex numbers, the corresponding magnitude is a = |A| = (a1 cos(φ1) + a2 cos(φ2)) 2 + (a1 sin(φ1) + a2 sin(φ2)) 2 . (1.43) Physically, the addition of two sinusoidal  ... 
doi:10.1002/9781119991298.ch14 fatcat:afqzxgyhzre2znstqgtgdh3uqi

An Extended Binaural Real-Time Auralization System With an Interface to Research Hearing Aids for Experiments on Subjects With Hearing Loss

Florian Pausch, Lukas Aspöck, Michael Vorländer, Janina Fels
2018 Trends in Hearing  
This system is capable of generating complex virtual acoustic environments, including room acoustic simulations, which are reproduced as combined via loudspeakers and research hearing aids.  ...  Theory and implementation of acoustic virtual reality have matured and become a powerful tool for the simulation of entirely controllable virtual acoustic environments.  ...  Special thanks go to Jonas Tumbra¨gel for assistance with evaluating and integrating the master hearing aid and the research hearing aids within the scope of his Master's Thesis.  ... 
doi:10.1177/2331216518800871 pmid:30322347 pmcid:PMC6195018 fatcat:uhpwbk47evcxjjlpvxroujfjb4

Virtual Moving Sound Source Localization through Headphones [chapter]

Larisa Dunai, Guillermo Peris-Fajarns, Teresa Magal-Royo, Beatriz Defez, Victor Santiago
2011 Advances in Sound Localization  
., 2001] confirm that the Head Related Transfer Functions (HRTFs) which represent the transfer characteristics of the sound source in a free field to the listener external ear [Blauert, 1997] ), are  ...  1 1 LM Y GL F M X = =⋅⋅ (5) Having the function given by (5) simultaneously for both ears, we measure both transfer functions Y 2 and X 2 , on which the transfer functions headphone-microphone G HM , are  ...  Consequently, SSL is a complex computation problem and development of robust sound localization techniques calls for different approaches, including multisensor schemes, nullsteering beamforming and time-difference  ... 
doi:10.5772/14643 fatcat:i3y2hrfimze5xobm6swu3ayr4u

Surround by Sound: A Review of Spatial Audio Recording and Reproduction

Wen Zhang, Parasanga Samarasinghe, Hanchi Chen, Thushara Abhayapala
2017 Applied Sciences  
While binaural recording and rendering is designed to resemble the human two-ear auditory system and reproduce sounds specifically for a listener's two ears, soundfield recording and reproduction using  ...  The paper is concluded with a discussion of the current state of the field and open problems.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/app7050532 fatcat:dndg7bwoerfhzff6ae7y5ygvym

A Wearable, Extensible, Open-Source Platform for Hearing Healthcare Research

Louis Pisha, Harinath Garudadri, Julian Warchall, Tamara Zubatiy, Sean Hamilton, Ching-Hua Lee, Ganz Chockalingam, Patrick P. Mercier, Rajesh Gupta, Bhaskar D. Rao
2019 IEEE Access  
All of these features are provided in a wearable form factor with enough battery life for hours of operation in the field.  ...  The platform provides a complete suite of basic and advanced hearing aid features which can be adapted by researchers.  ...  Acknowledgments This work is supported by the National Institute of Health, NIH/NIDCD grants R21DC015046, R33DC015046, "Self-fitting of Amplification: Methodology and Candidacy," and R01DC015436, "  ... 
doi:10.1109/access.2019.2951145 pmid:32547893 pmcid:PMC7297218 fatcat:djskc7xs65gsff2m4wn4izqvoa

Sound Processing for Better Coding of Monaural and Binaural Cues in Auditory Prostheses

Jan Wouters, Simon Doclo, Raphael Koning, Tom Francart
2013 Proceedings of the IEEE  
A review is given of some recent proposals to improve temporal coding in monaural CIs, and of recent work to improve the transmission of binaural cues in both HAs, CIs, and combined acoustic and electric  ...  of interfering sounds and with directional hearing.  ...  function of the noise component.  ... 
doi:10.1109/jproc.2013.2257635 fatcat:s2e7a7hecrhsdp3h4y36kr2nbq

Online Own Voice Detection for a Multi-Channel Multi-Sensor In-Ear Device

Pasi Pertila, Eemi Fagerlund, Anu Huttunen, Ville Myllyla
2021 IEEE Sensors Journal  
A signal mixing model is proposed to produce databases of noisy observations used for training and testing the frame-by-frame OVD method.  ...  Then, a wearable in-ear device equipped with multiple microphones and an accelerometer is investigated for the OVD task using a neural network with input embedding and long short-term memory (LSTM) layers  ...  In total, the used database for model training and evaluation contained 70 different users from which the OVTF and/or the head related transfer function (HRTF) were extracted.  ... 
doi:10.1109/jsen.2021.3122936 fatcat:vtvpdhxo4zef7ik7uruyfglwbu

Binaural noise reduction via cue-preserving MMSE filter and adaptive-blocking-based noise PSD estimation

Masoumeh Azarpour, Gerald Enzner
2017 EURASIP Journal on Advances in Signal Processing  
The latter essentially diminishes the utility of multiple-input/single-output filter-and-sum techniques such as beamforming.  ...  A particular challenge results from the desired reconstruction of binaural speech input with spatial cue preservation.  ...  For instance, in [35] , a common spectral gain function controlled by a superdirective beamformer design based on a head-related transfer function (HRTF) model was developed.  ... 
doi:10.1186/s13634-017-0485-9 fatcat:6lfcf5ujcvaoxnekcgkakwalnq
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