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A noise robust scheme for voice activity detection (VAD) that employs a combination of both intra- and inter-frame acoustic features is presented in this paper. As intra-frame features full-band energy and mel-frequency cepstrum coefficient (MFCC) are calculated whereas integrated bispectrum is estimated as inter-frame features. The parameters combined by intra- and inter-frame features are sorted...
In our previous work, a new HMM compensation approach for static MFCC features was proposed by using a technique called Unscented Transformation (UT). Three implementations of the UT approach with different computational complexities were evaluated on Aurora2 connected digits database, and significant performance improvements were achieved compared to log-normal- approximation-based PMC (Parallel...
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