发明名称 Pre-resampling to achieve continuously variable analysis time/frequency resolution
摘要 A digital audio signal can be processed using continuously variable time-frequency resolution by selecting a portion of an input digital audio signal, resampling the selected portion of the input digital audio signal, generating a plurality of spectral characteristics associated with the resampled portion of the input digital audio signal, generating a portion of an output digital audio signal from the plurality of spectral characteristics, and resampling the portion of the output digital audio signal. Further, resampling the selected portion of the input digital audio signal can comprise determining a sampling ratio and resampling the selected portion of the input digital audio signal in accordance with the determined sampling ratio. Additionally, the portion of the output digital audio signal can be resampled in accordance with the inverse of the determined sampling ratio. The sampling ratio can be determined based on a time-frequency resolution requirement associated with an audio processing algorithm.
申请公布号 US8473298(B2) 申请公布日期 2013.06.25
申请号 US20050265437 申请日期 2005.11.01
申请人 ROGERS KEVIN CHRISTOPHER;APPLE INC. 发明人 ROGERS KEVIN CHRISTOPHER
分类号 G10L13/00;G06F17/00 主分类号 G10L13/00
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