New method for measuring realistic speech levels in conversations

fredag 26 mar 21

Kontakt

Naim Mansour
Ph.d.-studerende
DTU Sundhedsteknologi
60 56 66 57

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Marton Marschall
Specialkonsulent
DTU Sundhedsteknologi

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Tobias May
Lektor
DTU Sundhedsteknologi
45 25 39 59

Kontakt

Torsten Dau
Sektionsleder, Professor
DTU Sundhedsteknologi
45 25 39 77
Researchers at Hearing Systems, Health Tech DTU, and WIDEX have found a new method to measure conversational signal to noise ratios. These findings are featured in JASA, the Journal of the Acoustical Society of America, this month.

The analysis of real-world conversational signal-to-noise ratios (SNRs) may provide insight into people's communicative strategies and difficulties, and guide the development of hearing devices. This study introduces a method for accurate in-situ SNR estimation, where the speech signal of a target talker in natural conversation is captured by a cheek-mounted microphone, adjusted for free-field conditions, and convolved with a measured impulse response to estimate its power at the receiving talker. The method is applied to in-situ recordings of conversations in two real-world sound scenarios and shown to result in more accurate SNR estimates compared to a typical single-channel method.

Naim Mansour, Marton Marshall, Tobias May, Adam Westermann, Torsten Dau
Link to article

Acknowledgements:
The research was supported by the Centre for Applied Hearing Research (CAHR) Hearing Systems DTU and Widex A/S.

Caption: Measuring the response of a cheek-mounted microphone with a head-and-torso simulator. Photo: Naim Mansour

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