Patent ID: 9282229
Filing Date: 2016-03-08
CPC Classification: H04B,H04N

Claim Text:
1. An audio processing apparatus comprising: an obtaining unit configured to obtain an audio signal; and a processor configured to process the audio signal; wherein the processor generates a first predicted signal based on an audio signal in a first period preceding a noise period which contains noise in the audio signal, and generates a second predicted signal based on an audio signal in a second period succeeding the noise period, wherein the processor combines the first predicted signal and the second predicted signal to generate an interpolation signal for replacing an audio signal in the noise period, wherein the processor detects a periodicity of the audio signal in the first period and a periodicity of the audio signal in the second period and changes a combining ratio of the first predicted signal and the second predicted signal in accordance with the detected periodicity of the audio signal in the first period and the detected periodicity of the audio signal in the second period, and wherein the processor replaces the audio signal in the noise period with the interpolation signal for reducing the noise in the audio signal.