AUDIO PROCESSING DEVICE, AUDIO PROCESSING METHOD, AND PROGRAM

摘要

[Problem] To provide a novel and improved audio processing device, audio processing method, and program that are able to favorably suppress feedback even if reflected sounds or non-feedback sounds are generated. [Solution] The audio processing device is provided with: a frequency domain conversion unit that converts audio signals input from a microphone into a frequency domain in each frame; and a gain adjustment unit that performs gain adjustment for each band with respect to the audio signal converted into frequency domains. The gain adjustment unit acquires an autocorrelation value of the power of the audio signal between frames for each band, and sets the adjustment quantity of the gain in accordance with the acquired autocorrelation value.