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Voice processor and voice processing method

A sound processing and sound technology, which is applied in speech analysis, sound-generating equipment, and transducer sound response prevention. It can solve the problems of masking the speaker's voice and making it difficult to be heard, and achieve the effect of preventing howling.

Inactive Publication Date: 2013-07-03
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to this configuration, the sound (for example, the speaker's voice) generated in the environmental area is made difficult to be heard, and the speaker's voice may be masked

Method used

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  • Voice processor and voice processing method

Examples

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Embodiment Construction

[0038] figure 1 (A) is a block diagram showing the configuration of a sound masking system including the sound processing device of the present invention. The sound masking system includes a sound processing device 1 , a microphone 11 that picks up the voice of a speaker 2 and ambient sound, and a speaker 17 that emits masking sound to a listener 3 . The sound processing apparatus 1 picks up the voice of the speaker 2 through the microphone 11 , and emits a masking sound that masks the voice of the speaker 2 to the listener 3 through the speaker 17 .

[0039] figure 1 In (A), the sound processing device 1 includes an A / D conversion section 12 , a sound analysis section 13 , a masking sound generation section 14 , a database 15 , and a D / A conversion section 16 . Alternatively, one can use and figure 1 (B) The same construction of the sound processing device 1' shown in (B), the microphone 11 and the loudspeaker 17 are the same as figure 1 (A) The sound processing device 1 ...

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Abstract

A voice analysis unit (13) extracts voice feature quantities such as format and pitch from an inputted voice signal. On the basis of the extracted voice feature quantities, a masking sound generation unit (14) processes sound source data (generic masking sounds) recorded in a database (15), and generates a masking sound for outputting. An example of a generic masking sound is a recording of voices of multiple people including both male and female voices, and including disturbance noise that does not have a lexical meaning (content of conversation not being comprehensible). The masking sound generation unit (14) matches the format of the disturbance noise to the format of the input voice signal format. The generated masking sound does not have a lexical meaning, and includes disturbance noise having a similar voice quality and pitch to that of a speaker; hence, it is difficult for a listener to understand what is actually being said by the speaker.

Description

technical field [0001] The present invention relates to a sound processing device and a sound processing method that pick up sound generated in an environment area and output a sound changed based on the picked up sound. Background technique [0002] In general, a configuration has been proposed in which sound generated in an environment area is picked up and processed, the picked up sound and the processed sound are mixed together, and the mixed sound is output from a speaker so that the listener hears a different sound. Based on the sound of the sound generated in the environment area (for example, see Patent Document 1). According to this configuration, a sound (for example, a speaker's voice) generated in the environment area is made difficult to be heard, and the speaker's voice may be masked. [0003] Citation of prior art [0004] patent documents [0005] Patent Document 1: JP-A-2009-118062 Contents of the invention [0006] The technical problem to be solved i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/175G10L21/06G10L21/04G10L25/15G10L25/90
CPCG10L25/90G10L25/15H04R3/02H04K3/825H04K2203/12H04K3/45H04K3/46H04K3/84H04K1/02G10K11/1752
Inventor 小林咏子石桥利晃
Owner YAMAHA CORP
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