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A novel method of sound amplitude limiting for signals conveying speech is presented. The method uses the frequency-specific levels of the speech conveyed by the signal to generate a set of time-varying speech reference levels. It limits the level of sounds conveyed by the signal to these speech reference levels. The method is called speech referenced limiting (SRL). It provides minimal limiting of speech while providing greater control over the loudness of non-speech sounds compared to conventional (fixed threshold) limiters. It is appropriate for use in applications where speech is the primary signal of interest such as telephones, computers, amplified hearing protectors and hearing aids. Three experiments were conducted to subjectively evaluate SRL. The results show preservation of speech loudness and quality and a reduction in the loudness of louder non-speech sounds to that of speech.
Author (s): Chong-White, Nicky; Dillon, Harvey; Fisher, Michael
Affiliation:
National Acoustic Laboratories, Sydney, NSW, Australia; The HEARing CRC, Melbourne, Victoria, Australia
(See document for exact affiliation information.)
AES Convention: 129
Paper Number:8162
Publication Date:
2010-11-06
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Session subject:
Speech Processing
Permalink: https://aes2.org/publications/elibrary-page/?id=15585
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Chong-White, Nicky; Dillon, Harvey; Fisher, Michael; 2010; Speech Referenced Limiting: Controlling the Loudness of a Signal with Reference to Its Speech Loudness [PDF]; National Acoustic Laboratories, Sydney, NSW, Australia; The HEARing CRC, Melbourne, Victoria, Australia; Paper 8162; Available from: https://aes2.org/publications/elibrary-page/?id=15585
Chong-White, Nicky; Dillon, Harvey; Fisher, Michael; Speech Referenced Limiting: Controlling the Loudness of a Signal with Reference to Its Speech Loudness [PDF]; National Acoustic Laboratories, Sydney, NSW, Australia; The HEARing CRC, Melbourne, Victoria, Australia; Paper 8162; 2010 Available: https://aes2.org/publications/elibrary-page/?id=15585
@article{chong-white2010speech,
author={chong-white nicky and dillon harvey and fisher michael},
journal={journal of the audio engineering society},
title={speech referenced limiting: controlling the loudness of a signal with reference to its speech loudness},
year={2010},
number={8162},
month={november},}