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Past Event: AES SGS Research Colloquium #3: From Algorithmic to Neural Beamforming - Two Approaches to Multichannel Speech Separation in Pro Audio

February 16, 2021 at 5:00 pm

Location: Zoom virtual Meeting (5pm Central European Time / Germany time zone)

Moderated by: Elena Shabalina - d&b audiotechnik GmbH

Speaker(s): Jonathan D. Ziegler - Institute for Visual Computing, University of Tübingen

Abstract

Human interaction increasingly relies on telecommunication as an addition to or replacement for immediate contact. Remote participation in conferences, sporting events, or concerts is more common than ever, and with current global restrictions on in-person contact, this has become an inevitable part of many people’s reality. The work presented here aims at improving these encounters by enhancing the auditory experience. Augmenting fidelity and intelligibility can increase the perceived quality and enjoyability of such actions and potentially raise acceptance for modern forms of remote experiences. Two approaches to automatic source localization and multichannel signal enhancement are investigated for applications ranging from small conferences to large arenas.
Three first-order microphones of fixed relative position and orientation are used to create a compact, reactive tracking and beamforming algorithm, capable of producing pristine audio signals in small and mid-sized acoustic environments. With inaudible beam steering and a highly linear frequency response, this system aims at providing an alternative to manually operated shotgun microphones or sets of individual spot microphones, applicable in broadcast, live events, and teleconferencing or for human-computer interaction.
Multiple microphones with unknown spatial distribution are combined to create a large-aperture array using an end-to-end Deep Learning approach. This method combines state-of-the-art single-channel signal separation networks with adaptive, domain-specific channel alignment. The Neural Beamformer is capable of learning to extract detailed spatial relations of channels with respect to a learned signal type, such as speech, and to apply appropriate corrections in order to align the signals. This creates an adaptive beamformer for microphones spaced on the order of up to 100 m.

The Presenter

Jonathan D. Ziegler is a PhD student at the Wilhelm Schickard Institute for Visual Computing at the Eberhard Karls University in Tübingen, focusing on deep learning and audio signal processing. He received his degree in Physics from the Karlsruhe Institute of Technology. In the past five years he has completed two large research projects as part of the Institute for Applied Artificial Intelligence at the Stuttgart Media University, closely collaborating with industry leaders in microphone and console design. In 2020, he joined the console manufacturer Lawo as a machine learning engineer, working on model optimization for real-time applications. He has more than fourteen years of experience as a musician and producer, and ran a small recording studio for over ten years.

Join Meeting
The colloquium will be held in English with a 30 min presentation.

Link: https://us02web.zoom.us/webinar/register/WN_RbvV4Pr9TWixDYYafafaVA

The Meeting Format: We will be hosting this meeting using Zoom. After registering, you will receive a confirmation email containing information about joining the webinar. Most participants will have audio and video muted during the meeting. The moderator will un-mute participants in turn to ask a question during the Q&A period. This will be explained again at the beginning of the meeting. For a better quality we suggest to use a headset with microphone.
The presentation will be recorded. By unmuting your microphone you are consenting for your voice to be recorded. By turning on your camera you are consenting for your image to be recorded, which may also be used in a photograph of the event.

ical Event: Add ical event to your office client.

Other Business: there will be a Q&A session after the talk.

View Official Meeting Report

More information about the AES South German Section


Posted: Wednesday, February 3, 2021

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Past Event: AES SGS Research Colloquium #2: Audio Production in the Context of Stereo-Upmix-Capable Playback Systems

February 2, 2021 at 5:00 pm

Location: Zoom virtual Meeting (5pm Central European Time / Germany time zone)

Moderated by: Elena Shabalina - d&b audiotechnik GmbH

Speaker(s): Lukas Benedicic - FH Joanneum Graz and University of Performing Arts Graz

Abstract

The research work deals with the production of audio content optimized for playback via the Echo Studio Smartspeaker as a case study for stereo-upmix-capable playback systems. The topic of 3D audio is considered one of the most promising within the audio community, but its establishment into the mainstream seems to be a long way off. This 'inertia' could be due to the currently still rather limited accessibility of 3D audio, as this content can usually only be played back via special systems. The vast majority of people still consume audio content in stereo. In order to still be able to offer immersive listening experiences, playback systems such as the Amazon Echo Studio or Soundbars such as those from Sennheiser use stereo upmix technologies, which means that no special audio formats are required. The goal of this work is to find out how to best use these technologies from a production point of view. This will help to determine whether such technologies should be considered in future productions.

The PresenterThe Presenter - Lukas Benedicic

I am a Sound Designer and Musician, currently finishing my studies at the FH Joanneum Graz and the University of Music and Performing Arts Graz. My academic journey started with Musicology, where I got my bachelor's degree. Between my bachelor's and master's studies I completed an audio engineering course, which certifies me as an audio engineer. Besides the formal education, I try to stay busy improving my skills, whether it be sound design related or musical.

Join Meeting

The colloquium will be held in English with a 45-50 min presentation.

Link: https://us02web.zoom.us/webinar/register/WN_F4VxthiKToeNiWSq1-zXvA

The Meeting Format: We will be hosting this meeting using Zoom. After registering, you will receive a confirmation email containing information about joining the webinar. Most participants will have audio and video muted during the meeting. The moderator will un-mute participants in turn to ask a question during the Q&A period. This will be explained again at the beginning of the meeting. For a better quality we suggest to use a headset with microphone.

The presentation will be recorded. By unmuting your microphone you are consenting for your voice to be recorded. By turning on your camera you are consenting for your image to be recorded, which may also be used in a photograph of the event.

ical Event: Add ical event to your office client.

Other Business: there will be a Q&A session after the talk.

View Official Meeting Report

More information about the AES South German Section


Posted: Saturday, January 23, 2021

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Posted: Tuesday, January 19, 2021

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Past Event: AES SGS Research Colloquium #1: Ecological Momentary Assessment - Evaluating Hearing Aids in Real Life

January 19, 2021 at 5:00 pm

Location: Zoom virtual Meeting (5pm Central European Time / Germany time zone)

Moderated by: Elena Shabalina - d&b audiotechnik GmbH

Speaker(s): Nadja Schinkel-Bielefeld - Sivantos GmbH

Abstract

Hearing aid functionality changes with the acoustic situation and is steered by complex algorithms. This makes it necessary to evaluate hearing aids not only under specific, well controlled conditions in the laboratory, but also in real life. A method to do so is ecological momentary assessment. This typically involves subjects filling out several questionnaires per day describing their experience with the hearing aids in the current moment and the acoustic environment they are in. In addition, objective data about the acoustic situation can be collected from the hearing aids.

Compared to traditional home trial studies and retrospective questionnaire this has the advantage of having less memory bias and being more context sensitive, as results can be evaluated for different acoustic situations. However, as subjects may avoid difficult situations or change their behaviour depending on the hearing aids, subjective ratings of the hearing aids alone may not give an accurate picture without considering the experienced environments as well.

In my talk I will describe some example EMA studies we did – including a completely contactless one – and will discuss advantages and challenges of this method.

The Presenter

Nadja Schinkel-Bielefeld

Nadja Schinkel-Bielefeld studied physics at the Universities of Bremen (Germany) and Durham (UK), graduating from the latter with a M.Sc. in Elementary Particle Theory. She obtained a doctorate from Bremen University for research on probabilistic models of human contour integration, conducted at the Institute of Theoretical Neurophysics. She went on to do two postdocs in the United States. The first one was in the Department of Brain and Cognitive Sciences at the Massachusetts Institute of Technology, where she worked models for human perceptual organization and its implications for computer human interactions. The second one was in the NeuroTheory Lab at the University of Maryland, College Park, where she worked on nonlinear models of single neuron computation in the auditory system. After returning to Germany, she worked at the Fraunhofer Institute of Integrated Circuits conducting research on listening test methodology for the subjective evaluation of speech and audio-coded material. In 2017 she joined Sivantos GmbH where she focuses on big data analysis and the evaluation of hearing aids in everyday life using ecological momentary assessment.

Join Meeting

The colloquium will be held in English.

Link: https://dbaudio.zoom.us/j/92281799832?pwd=dkEzNStLNXVubmM0ZHRhalZqdVB6QT09

Meeting-ID: 922 8179 9832

Password: 404494

The Meeting Format: We will be hosting this meeting using Zoom. Most participants will have audio and video muted during the meeting. The moderator will un-mute participants in turn to ask a question during the Q&A period. This will be explained again at the beginning of the meeting. For a better quality we suggest to use a headset with microphone.

ical Event: Add ical event to your office client.

Other Business: there will be a Q&A session after the talk.

View Official Meeting Report

More information about the AES South German Section


Posted: Tuesday, December 22, 2020

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Past Event: AES South German Section 6th (5th virtual) Meeting

December 21, 2020 at 5:00 pm

Location: Webex virtual meeting

Moderated by: Dr. Rafael Kassier

The final meeting of 2020 - a year of great upheaval, but one in which we made a start to rebuilding the South German Section! This will be the 6th meeting (5th virtual).

Elena Shabalina has been planning the upcoming research colloquium events, and we have FOUR sessions planned next year from January-April!

Agenda:

  • Upcoming South German Section Research Colloquium topics.
  • Website improvement suggestions.
  • Summary of 2020


Join the Meeting

This meeting is open to AES Members and AES Non-Members.

Link: Webex-Meeting

Meeting Password: sYMK97uMsG3

The Meeting Format: We will be hosting this meeting using Cisco Webex. For a better quality we suggest to use a headset with microphone.

View Official Meeting Report


Posted: Sunday, December 13, 2020

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1. You must be an AES member and log in to the AES website. Furthermore you must have a valid email address in you basic information

 

 2. Check if you are a member of the AES South German Section in the AES Member Portal. If you are not a member of the South German Section, please write an email to change your affiliation. 

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Posted: Sunday, December 13, 2020

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