Sound processing device and sound processing method

摘要

A sound processing apparatus which can improve precision of analyzes on ambient sounds, carries out analysis on the ambient sounds based upon collected sound signals acquired by two sound collectors. The sound processing apparatus is provided with a level signal converter that converts the collected sound signal into a level signal, which indicates an absolute value of the collected sound signal from which phase information is removed. A level signal synthesizer generates a synthesized level signal in which the level signals acquired from the collected sound signals of the two sound collectors are synthesized, and a detector/identifier carries out analysis on the ambient sounds, based upon the synthesized level signal.

主权项

1. A sound processing apparatus, which analyzes ambient sound based upon collected sound signals acquired by two sound collectors, the sound processing apparatus comprising:
a processor that executes instructions stored in a memory, comprising a level signal converter which, for each the of collected sound signals, converts the collected sound signal into a level signal having a plurality of frequency bands, which indicates an absolute value of the collected sound signal and from which phase information is removed; a level signal synthesizer that generates a synthesized level signal in which the level signals of a single portion of the frequency bands obtained from the collected sound signals from the two sound collectors are synthesized; and a detector/identifier that analyzes the ambient sound based upon the synthesized level signal.