Podcasts about hrtfs

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2022.09.09.507313v1?rss=1 Authors: Camperos, M. J. G., Goncalves, T. C., Marin, B., Pavao, R. Abstract: Interaural Time Difference (ITD) is the main cue for azimuthal auditory perception in humans. ITDs at each frequency contribute differently to azimuth discrimination, which can be quantified by their azimuthal Fisher Information. Consistently, human ITD discrimination thresholds are predicted by the azimuthal information. However, this prediction is poor for frequencies below 500 Hz. Such poor prediction could be ascribed to the strategy of quantifying azimuthal information using HRTFs obtained in unnaturalistic anechoic chambers or by using a direct method which does not incorporate the delay lines proposed by the Jeffress-Colburn model. In the present study, we obtained ITD discrimination thresholds from extensive sampling across frequency and ITD, and applied multiple strategies for quantifying azimuthal information. These strategies employed HRTFs obtained in realistic and anechoic chambers, with and without considering delay lines. We found that ITD discriminability thresholds across the complete range of frequencies are better predicted by azimuthal information conveyed by ITD cues when (1) we use naturalistic high-noise HRTFs, and (2) ITD delay compensation is not applied. Our results support that auditory perception is shaped by natural environments, which include high reverberation in low frequencies. Moreover, we also suggest that delay lines are not a crucial feature for determining ITD discrimination thresholds in the human auditory system. Copy rights belong to original authors. Visit the link for more info Podcast created by PaperPlayer

In this episode of the Immersive Audio Podcast, Oliver Kadel, Monica Bolles and Bjørn Jacobsen are joined by a Principal Dev Leader at the Mixed Reality division at Microsft Noel Cross and Senior Principal Researcher at Microsoft Research Nikunj Raghuvanshi from Redmond, US. Nikunj likes to invent techniques that create immersive sight and sound from computation. He is endlessly fascinated with simulating the laws of physics in real-time and finds it thrilling to search for simple algorithms that unfold into complex physical behaviour. He has over a decade of research and development experience at the intersection of computational audio, graphics, and physics, with over fifty papers and patents. His inventions have been successfully deployed in the industry, particularly Project Acoustics, which is bringing immersive sound propagation to many major AAA game franchises today. Nikunj is currently a Senior Principal Researcher at Microsoft Research. Previously, he initiated interactive sound simulation research at UNC-Chapel Hill during his PhD studies, whose codebase was acquired by Microsoft. Noel grew up playing games on my Commodore 64 and Amiga computers. His love for multimedia computing helped him to start working at Microsoft as an intern in 1991 in the multimedia team. This was the age of the SoundBlaster 16 ISA cards and CD-ROMs were just being introduced into PCs. Out of the multimedia team, the DirectX team was born to accelerate the development of high-quality games for the PC. Noel worked on DirectSound and audio drivers for Windows getting a taste of the game development community attending several GDCs in the 90s. This was the first time he was introduced to 3D audio algorithms and at the time the technology didn't impress much. Through the 2000s, he worked on every release of Windows with the focus on improving the audio subsystem. This led to the complete overhaul of the audio infrastructure on the Windows Vista platform which has remained largely intact since introduced in 2006. The most current stop on his Microsoft journey is working on Mixed Reality devices. He worked on the speech and audio functionality exposed from HoloLens and Windows Mixed Reality devices with a concentration on spatial audio. After having lackluster impact in the 90s with spatial audio, he's been reinvigorated working on this technology with the introduction of high-quality HRTFs and head-tracking services to complete the experience. Spatial audio processing has also led Noel to better understand the impact of acoustics on virtual 3d worlds. His team is currently working on Project Acoustics which allows developers of 3d titles to take advantage of wave-based simulations to handle how audio propagates in the real world. In this episode, Nikunj and Noel dive deep into the topic of physics-based virtual acoustics along with Project Triton and Project Acoustics covering fundamental theory, research, technology and case studies. This episode was produced by Oliver Kadel and Emma Rees and included music by Rhythm Scott. For extended show notes and more information on this episode go to https://immersiveaudiopodcast.com/episode-62-nikunj-raghuvanshi-noel-cross-microsoft-physics-based-virtual-acoustics/ If you enjoy the podcast and would like to show your support please consider becoming a Patreon. Not only are you supporting us, but you will also get special access to bonus content and much more. Find out more on our official Patreon page - www.patreon.com/immersiveaudiopodcast We thank you kindly in advance! We want to hear from you! We value our community and would appreciate it if you would take our very quick survey and help us make the Immersive Audio Podcast even better: surveymonkey.co.uk/r/3Y9B2MJ Thank you! You can follow the podcast on Twitter @IAudioPodcast for regular updates and content or get in touch via podcast@1618digital.com immersiveaudiopodcast.com

In this episode of the Immersive Audio Podcast, Oliver Kadel is joined by the Director of Engineering at Embody - Kaushik Sunder, from San Francisco, US. Kaushik Sunder currently heads the overall Engineering efforts and also leads the Audio and Acoustics Research Team at EMBODY.  Kaushik has spent a great deal of his research career in the field of 3D Audio and Psychoacoustics. Over the last few years, his research has focussed on understanding the importance of personalized HRTFs particularly for headphone playback of spatial audio.   Prior to working at Embody, Kaushik served as a role of Research Scientist at Ossic and as a Postdoctoral Researcher at the Sound Recording Department, Schulich School of Music at McGill University. He is also a visiting research scientist at the Human factors department at NASA Ames Research Center. Kaushik received his PhD from the Digital Signal Processing Laboratory, NTU Singapore. He has regularly authored articles appearing in the Journal of Acoustical Society of America, IEEE Signal Processing Magazine, Journal of Audio Engineering Society, and AES International Conventions. In this episode, we dive deep into the topic of personalised listening for spatial audio, and Kaushik expertly explains the science behind personalised HRTF and the advantages of its usage in the studio. This episode was produced by Oliver Kadel and Emma Rees and included music by Rhythm Scott. For extended show notes and more information on this episode go to https://www.1618digital.com/immersive-audio-podcast-episode-51-kaushik-sunder-embody/ If you enjoy the podcast and would like to show your support please consider becoming a Patreon. Not only are you supporting us, but you will also get special access to bonus content and much more. Find out more on our official Patreon page - www.patreon.com/immersiveaudiopodcast We thank you kindly in advance! We want to hear from you! We value our community and would appreciate it if you would take our very quick survey and help us make the Immersive Audio Podcast even better: surveymonkey.co.uk/r/3Y9B2MJ Thank you! You can follow the podcast on Twitter @IAudioPodcast for regular updates and content or get in touch via podcast@1618digital.com

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.06.10.143792v1?rss=1 Authors: Ahrens, A., Cuevas-Rodriguez, M., Brimijoin, W. O. Abstract: Speech intelligibility is known to be affected by the relative spatial position between target and interferers. The benefit of a spatial separation is, along with other factors, related to the head-related transfer function (HRTF). The HRTF is individually different and thus, the cues that improve speech intelligibility might also be different. In the current study an auditory model was employed to predict speech intelligibility with a variety of HRTFs. The predicted speech intelligibility was found to vary across HRTFs. Thus, individual listeners might have different access to cues that are important for speech intelligibility. Copy rights belong to original authors. Visit the link for more info

Darin Fong talks about his headphone-virtualization software called Out of Your Head. Topics include a quick summary of head-related transfer functions (HRTFs), how Darin wanted to simulate the effect of listening to a speaker-based stereo system in headphones, how he measures HRTFs in different rooms with different speakers to create presets, and how the software accepts the audio from a media player and applies the selected preset to create a binaural-audio file. We also play a few examples (be sure to listen on headphones to hear the effect!) and discuss various applications and plans for future developments. Plus answers to chatroom questions and more. Host: Scott Wilkinson Guest: Darin Fong Subscribe to Home Theater Geeks at https://twit.tv/shows/home-theater-geeks Thanks to CacheFly for the bandwidth for this show.

Darin Fong talks about his headphone-virtualization software called Out of Your Head. Topics include a quick summary of head-related transfer functions (HRTFs), how Darin wanted to simulate the effect of listening to a speaker-based stereo system in headphones, how he measures HRTFs in different rooms with different speakers to create presets, and how the software accepts the audio from a media player and applies the selected preset to create a binaural-audio file. We also play a few examples (be sure to listen on headphones to hear the effect!) and discuss various applications and plans for future developments. Plus answers to chatroom questions and more. Host: Scott Wilkinson Guest: Darin Fong Subscribe to Home Theater Geeks at https://twit.tv/shows/home-theater-geeks Thanks to CacheFly for the bandwidth for this show.

Darin Fong talks about his headphone-virtualization software called Out of Your Head. Topics include a quick summary of head-related transfer functions (HRTFs), how Darin wanted to simulate the effect of listening to a speaker-based stereo system in headphones, how he measures HRTFs in different rooms with different speakers to create presets, and how the software accepts the audio from a media player and applies the selected preset to create a binaural-audio file. We also play a few examples (be sure to listen on headphones to hear the effect!) and discuss various applications and plans for future developments. Plus answers to chatroom questions and more. Host: Scott Wilkinson Guest: Darin Fong Subscribe to Home Theater Geeks at https://twit.tv/shows/home-theater-geeks Thanks to CacheFly for the bandwidth for this show.

Darin Fong talks about his headphone-virtualization software called Out of Your Head. Topics include a quick summary of head-related transfer functions (HRTFs), how Darin wanted to simulate the effect of listening to a speaker-based stereo system in headphones, how he measures HRTFs in different rooms with different speakers to create presets, and how the software accepts the audio from a media player and applies the selected preset to create a binaural-audio file. We also play a few examples (be sure to listen on headphones to hear the effect!) and discuss various applications and plans for future developments. Plus answers to chatroom questions and more. Host: Scott Wilkinson Guest: Darin Fong Subscribe to Home Theater Geeks at https://twit.tv/shows/home-theater-geeks Thanks to CacheFly for the bandwidth for this show.

Kaushik Sunder, research scientist at Ossic, talks about how humans hear in three dimensions. Topics include the anatomy of the ear, head-related transfer functions (HRTFs), and how they affect the spectral balance of what we hear based on the direction from which a sound comes as well as individual characteristics such as the shape of the outer ear and size of the head. He also discusses binaural recording, and we listen to a clip of such a recording he made in Bali; for more of Kaushik's binaural recordings, go to https://soundcloud.com/soundmaps_beingthere. Finally, he describes the Ossic X headphones and how they reproduce 3D immersive sound. Also, answers to chatroom questions and more. Host: Scott Wilkinson Guest: Kaushik Sunder Subscribe to Home Theater Geeks at https://twit.tv/shows/home-theater-geeks Thanks to CacheFly for the bandwidth for this show.