Paper: Active Speech Control using Wave-Domain Processing with a Linear Wall of Dipole Secondary Sources

Ever wondered if you could cancel someones voice without the need for a physical wall or partition? In this work presented at ICASSP 2017 in New Orleans, USA, we investigate the possibilities of cancelling speech over a loudspeaker wall. The method is not limited to speech, in-fact, it works much better for periodic signals as the non-stationarity of speech degrades the performance.

Scenario Layout - ICASSP2017IEEE_ICASSP2017_1

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Paper: Towards Real-Time Source Counting by Estimation of Coherent-to-Diffuse Ratios from Ad-Hoc Microphone Array Recordings

Blindly counting the number of speech sources (talkers) in a meeting room can be a difficult task. This paper was presented at HSCMA 2017 at the Google Offices in San Francisco and shows how using coherent-to-diffuse ratios could allow real-time source counting.

Example Layout - Towards Real-Time Source Counting by Estimation of Coherent-to-Diffuse Ratios from Ad-hoc Microphone Array Recordings
Success Rate - Towards Real-Time Source Counting by Estimation of Coherent-to-Diffuse Ratios from Ad-hoc Microphone Array Recordings

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Paper: Reproducing Personal Sound Zones Using a Hybrid Synthesis of Dynamic and Parametric Loudspeakers

A hybrid loudspeaker system consisting of dynamic point sources and parametric loudspeaker models shows great results above, generally inevitable, soundfield aliasing frequencies.
This work was presented at APSIPA ASC 2016 in Jeju, Korea.

Loudspeaker Layout - APSIPA2016
L16_Results - APSIPA2016

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How to create sounds that only you can hear in a venue

Jacob Donley, University of Wollongong and Christian Ritz, University of Wollongong
The Conversation

Picture your typical busy cafe or restaurant that’s full of people. The diners are usually all forced to listen to the same music that’s pumped into the venue via the speakers.

What if you could create sound that was tailored to each table’s taste so the people there could listen to their own music, sports event, news or just enjoy the silence?

It might sound impossible but it’s closer to becoming a reality than you think. Continue reading How to create sounds that only you can hear in a venue

Paper: Improving Speech Privacy in Personal Sound Zones

Presented at ICASSP 2016, we explore ways to improve speech privacy in multizone soundfield reproductions using intelligibility metrics, all while maintaining high speech quality.

Anechoic Results - Improving Speech Privacy in Personal Sound Zones
Multizone Soundfield Layout - Improving Speech Privacy in Personal Sound Zones

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