The Harmonic Compressor, A System for Doubling Information Rates of Speech

Breuel JW, Levens LM. The Harmonic Compressor, A System for Doubling Information Rates of Speech. In: AES Convention 37. Audio Engineering Society; 1969. Paper 658. Available from: https://aes.org/publications/elibrary-page/?id=1354

@inproceedings{Breuel1969_1354,
  author = {Breuel, John W. and Levens, Leo M.},
  title = {{The Harmonic Compressor, A System for Doubling Information Rates of Speech}},
  booktitle = {AES Convention 37},
  note = {Paper 658},
  year = {1969},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=1354}
}

TY  - CPAPER
TI  - The Harmonic Compressor, A System for Doubling Information Rates of Speech
AU  - Breuel, John W.
AU  - Levens, Leo M.
T2  - AES Convention 37
M1  - Paper 658
PY  - 1969
DA  - 1969/10/06
UR  - https://aes.org/publications/elibrary-page/?id=1354
PB  - Audio Engineering Society
LA  - en
AB  - The Harmonic Compressor (HARCO) doubles the information rate of speech or music while maintaining the original frequency and amplitude. In contrast to electro-mechanical systems in present use, HARCO system is electronic. An analysis-synthesis method is used. Input signals at twice the original rate are analyzed by a 36 channel filter bank covering the range of 200-7400 Hz. Frequency of each channel is divided by 2, maintaining envelope information. Summation and filtering follow. HARCO system and circuits will be described. Actual recordings will be demonstrated.
ER  -