Learn More
In this paper, we present a novel bitstream scalable audio coder. In the proposed coder, the full bandwidth of input audio is first split into two. A hybrid WLPC–wavelet representation is used to encode the low frequency components (11 kHz). In this method, the excitation to the WLPC synthesis filter is decomposed into subbands using a wavelet fil-terbank,(More)
In this paper, we present results for a wavelet transform (WT) excited warped linear prediction (WLP) audio coder. In contrast to conventional LP, WLP allows for the control of frequency resolution to closely match the response of the human auditory system. The structure of the system is similar to the transform–coded excitation techniques used in wideband(More)
This paper studies the effectiveness of higher order spectra (HOS) phase features in the task of speaker identification. Within the speech processing community, short time spectral phase information is generally regarded as unimportant for speaker recognition. In fact, the most commonly used features for speaker recognition are the Mel frequency cepstral(More)
In this paper, an audio coder using the discrete wavelet transform (DWT) and a warped linear prediction (WP) model, is proposed. In contrast to conventional LP, WLP allows for the control of frequency resolution closely match the response of the human auditory system. The residual from the inverse WLP filtering is analyzed by a wavelet filterband designed(More)
  • 1