Speech Analysis-Synthesis System Based on Homomorphic Filtering Export

@article{Oppenheim1969Speech, abstract = {A digital speech analysis-synthesis system based on a recently proposed approach to the deconvolution of speech [A. V. Oppenheim and R. W. Schafer, Homomorphic Analysis of Speech, Conference on Speech Communication and Processing (1967)] will be discussed. The analyzer is based on a computation of the cepstrum considered as the inverse Fourier transform of the log magnitude of the Fourier transform. The transmitted parameters represent pitch and voiced-unvoiced information as measured from the cepstrum, and the low-time portion of the cepstrum representing an approximation to the cepstrum of the vocal-tract impulse response. In the synthesis, the low-time cepstral information is transformed to an impulse response function which is then convolved with a train of impulses during voiced portions or a noise waveform during unvoiced portions to reconstruct the speech. Since no phase information is retained in the analysis, phase must be regenerated during synthesis. Either a zero-phase or minimum-phase characteristic can be obtained by simple weighting of the cepstrum before transformation [Lincoln Lab. operated with support from the U. S. Air Force.]}, author = {Oppenheim, Alan V.}, citeulike-article-id = {2215857}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JASMAN000045000001000309000004&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aip.org/link/?JAS/45/309}, citeulike-linkout-2 = {http://dx.doi.org/10.1121/1.1971463}, doi = {10.1121/1.1971463}, journal = {Journal of the Acoustical Society of America}, keywords = {6820, bib-ismir05, bib-mmsj05, mfcc}, number = {1}, pages = {309}, posted-at = {2008-01-10 19:14:51}, priority = {2}, publisher = {ASA}, title = {Speech Analysis-Synthesis System Based on Homomorphic Filtering}, url = {http://dx.doi.org/10.1121/1.1971463}, volume = {45}, year = {1969} }

TY - JOUR ID - Oppenheim1969Speech L3 - citeulike-article-id:2215857 N2 - A digital speech analysis-synthesis system based on a recently proposed approach to the deconvolution of speech [A. V. Oppenheim and R. W. Schafer, Homomorphic Analysis of Speech, Conference on Speech Communication and Processing (1967)] will be discussed. The analyzer is based on a computation of the cepstrum considered as the inverse Fourier transform of the log magnitude of the Fourier transform. The transmitted parameters represent pitch and voiced-unvoiced information as measured from the cepstrum, and the low-time portion of the cepstrum representing an approximation to the cepstrum of the vocal-tract impulse response. In the synthesis, the low-time cepstral information is transformed to an impulse response function which is then convolved with a train of impulses during voiced portions or a noise waveform during unvoiced portions to reconstruct the speech. Since no phase information is retained in the analysis, phase must be regenerated during synthesis. Either a zero-phase or minimum-phase characteristic can be obtained by simple weighting of the cepstrum before transformation [Lincoln Lab. operated with support from the U. S. Air Force.] IS - 1 JF - Journal of the Acoustical Society of America EP - 309 TI - Speech Analysis-Synthesis System Based on Homomorphic Filtering PB - ASA VL - 45 SP - 309 KW - 6820 KW - bib-ismir05 KW - bib-mmsj05 KW - mfcc AU - Oppenheim, Alan PY - 1969/// UR - http://dx.doi.org/10.1121/1.1971463 ER -