TY - GEN
T1 - Designing a unified speech/audio codec by adopting a single channel harmonic source separation module
AU - Shin, Sang Wook
AU - Lee, Chang Heon
AU - Oh, Hyen O.
AU - Kang, Hong Goo
PY - 2008
Y1 - 2008
N2 - This paper proposes a unified speech/audio codec by adopting a single channel harmonic separation module as a pre-processor. A modulation frequency analysis method is used for harmomc separation, and the separated components are first encoded by an appropriate codec, e.g. speech codec. The error between input and the encoded signal is re-encoded by another codec. Though any type of codec can be used for the purpose, we adopt two state-of-the-art international standards (AMR-WB and HE-AAC) to provide an interoperability option. The amount of allocated bits to each stage is controlled by a power ratio of separated harmonic components to input signal. Subjective listening tests verify the consistency of the proposed method in speech, music and mixed signal inputs
AB - This paper proposes a unified speech/audio codec by adopting a single channel harmonic separation module as a pre-processor. A modulation frequency analysis method is used for harmomc separation, and the separated components are first encoded by an appropriate codec, e.g. speech codec. The error between input and the encoded signal is re-encoded by another codec. Though any type of codec can be used for the purpose, we adopt two state-of-the-art international standards (AMR-WB and HE-AAC) to provide an interoperability option. The amount of allocated bits to each stage is controlled by a power ratio of separated harmonic components to input signal. Subjective listening tests verify the consistency of the proposed method in speech, music and mixed signal inputs
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U2 - 10.1109/ICASSP.2008.4517577
DO - 10.1109/ICASSP.2008.4517577
M3 - Conference contribution
AN - SCOPUS:51449111876
SN - 1424414849
SN - 9781424414840
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 185
EP - 188
BT - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
T2 - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
Y2 - 31 March 2008 through 4 April 2008
ER -