Patent ID: 9558744
Date: 2017-01-31
CPC Classifications: G10L,H04M

Claim:
1. An audio processing apparatus comprising: an audio masker separator for separating, from a first audio signal, an audio material as an audio masker candidate, the audio material comprising a sound other than stationary noise and utterance meaningful in semantics; a first context analyzer for obtaining statistics regarding contextual information of detected audio masker candidates; wherein the statistics regarding contextual information of detected audio masker candidates comprise statistics regarding at least one of the following in the first audio signal: occurrence frequency of each kind of audio masker candidate for a specific duration or talkspurt, position of the audio masker candidate in a talkspurt, sound level of the audio masker candidate, long term speech level of the first audio signal, speech rate of the first audio signal, long term background stationary noise level in the first audio signal, and talker identity; and a masker library builder for building a masker library or updating an existing masker library by adding, based on the statistics, at least one audio masker candidate as an audio masker into the masker library, wherein audio maskers in the maker library are used to be inserted into a target position in a second audio signal to conceal defects in the second audio signal; wherein the masker library builder is configured to assign different priorities to the audio maskers in the masker library based on the statistics.