Patent ID: 9318126
Filing Date: 2016-04-19
CPC Classification: G10L

Claim Text:
1. A voice clarification apparatus comprising: a microcomputer; a memory including a program; a plurality of band-pass filters that respectively extract a plurality of band components, which are included in a voice band, from an input audio signal to output a plurality of feedforward, extracted band components; a gain determination unit that determines a gain according to a level of a signal of a band component which is extracted by a band-pass filter; a level adjustment unit that adjusts levels of signals of the plurality of feedforward, extracted band components using the gain; and a first addition unit that adds a signal which is based on the input audio signal to a signal including the adjusted levels of signals of the plurality of feedforward, extracted band components and excluding any feedback components of the extracted band components, and outputs a signal obtained through the addition, wherein the plurality of band-pass filters, the gain determination unit, the level addition unit, and the first addition unit are implemented by the microcomputer executing the program.