Sound masking system and masking sound generation method

Details Sound masking system and masking sound generation method Sound masking system and masking sound generation method

2008-03-19

2011-11-01

Neway, Samuel G (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Application

C381S073100

Reexamination Certificate

active

08050931

ABSTRACT:
In a masking sound generation apparatus, a CPU analyzes a speech utterance speed of a received sound signal. Then, the CPU copies the received sound signal into a plurality of sound signals and performs the following processing on each of the sound signals. Namely, the CPU divides each of the sound signals into frames on the basis of a frame length determined on the basis of the speech utterance speed. Reverse process is performed on each of the frames to replace a waveform of the frame with a reverse waveform, and a windowing process is performed to achieve a smooth connection between the frames. Then, the CPU randomly rearranges the order of the frames and mixes the plurality of sound signals to generate a masking sound signal.

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patent: WO-2004/010620 (2004-01-01), None
patent: WO-2004/010627 (2004-01-01), None

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