Patent ID: 9674607
Date: 2017-06-06
CPC Classifications: G10L,H04R

Claim:
1. A sound collecting apparatus comprising: a small-signal power acquisition unit that defines a threshold for each of a plurality of input signals based on a long-term average of a minimum power of the corresponding input signal, each of the input signals being obtained by a microphone, and sets a power value of each input signal that is smaller than the corresponding defined threshold to be a small-signal power of the input signals, wherein the long-term average is calculated for each input signal based on a plurality of forgetting coefficient values being applied according to power of the input signal; a correction amount setting unit that obtains each correction amount for correcting the input signals based on the small-signal power of each of the input signals; and a correction unit that corrects each of the input signals based on each of the correction amounts for correcting the input signals.