Title:
AUDIO PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/217605
Kind Code:
A1
Abstract:
An audio processing device (10) according to the invention is provided with: a pre-processing unit (30) that derives an audio-band signal from a first electric signal supplied from a first microphone (20) and outputs a first output signal; a first control unit (50) that multiplies the first output signal, thereby generating a first amplification factor for compressing a dynamic range of intensity of the first output signal and that smooths the first amplification factor by a first time constant, thereby generating a first corrected amplification factor; and a first multiplying unit (44) that multiplies the first corrected amplification factor and the first output signal together, wherein the first time constant is a first rise time constant in a case where the intensity of the first output signal increases and is a first fall time constant in a case where the intensity of the first output signal decreases, and wherein the first rise time constant is equal to or greater than a time resolution of the auditory sense of hearing-impaired people and is less than a time duration of audio in which hearing-impaired people is induced to a phenomenon of recruitment.
Inventors:
MIYASAKA SHUJI
Application Number:
PCT/JP2020/001552
Publication Date:
October 29, 2020
Filing Date:
January 17, 2020
Export Citation:
Assignee:
SOCIONEXT INC (JP)
International Classes:
H04R25/00; G10L21/0332; G10L21/034; G10L21/0364; H03G7/00
Domestic Patent References:
| WO2012098856A1 | 2012-07-26 |
Foreign References:
| JP2002507355A | 2002-03-05 | |||
| JP2018137734A | 2018-08-30 |
Other References:
HOUBEN, ADRIAN CARINA HENR I, THE EFFECT OF AMPLITUDE COMPRESSION ON THE PERCEPTION OF SPEECH IN NOISE BY THE HEARING IMPAIRED[ ONLINE, 2006, pages 1 - 154, XP055758440, Retrieved from the Internet [retrieved on 20200302]
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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