Channel Vocoder with Digital Pitch Extractor
作者:
Joseph Tierney,
Bernard Gold,
Vincent Sferrino,
J. A. Dumanian,
Everett Aho,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1964)
卷期:
Volume 36,
issue 10
页码: 1901-1905
ISSN:0001-4966
年代: 1964
DOI:10.1121/1.1919290
出版商: Acoustical Society of America
数据来源: AIP
摘要:
An experimental, digitized channel vocoder has been designed and built at the Lincoln Laboratory. This vocoder differs from previous vocoders in the design of the pitch extractor. Pitch is obtained by using a special‐purpose digital computer to combine the outputs of 6 analog pitch indicators. The synthesizer uses spectral flattening to reduce spectral distortion caused by pitch variations and nonuniform filter bandwidths. For high‐quality speech input, the quality of the Lincoln vocoder is considered by many listeners to be comparable to that of a voice‐excited vocoder.
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