Analog and digital signal apparatus
作者： Kenneth J. Gundry
DOI:
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摘要: In order to reduce the effect of modulation quantizing error (noise) by signal in an adaptive digital audio system and increase dynamic range system, analog converter is preceded a frequency dependent network that changes shape its characteristic response control signal. The derived from variable scaling factor converter. After transmission via channel or record/playback process, complementary operations are performed followed further network.
lens.org 参考文章(9)
Richard T. Gagnon, Compressed speech system and predictor ,(1978)
Tatsuo Ishiguro, Toshio Oshima, Delta modulation encoder ,(1975)
J Greefkes, Den Enden A Van, J Glasbergen, Pcm system including a pulse pattern analyzer ,(1971)
Hermon H Scott, System for reducing noise in the transmission of electric signals ,(1946)
Yoshitoshi Fujita, Yasuo Itoh, Nobuaki Takahashi, Kazunori Nishikawa, Yukinobu Ishigaki, Compression and/or expansion system and circuit ,(1972)
Kazunori Nisikawa, Masami Yamazaki, Yutaka Haramoto, Compression and expansion system with enlarged dynamic range ,(1976)
Yutaka Haramoto, Yukinobu Ishigaki, Noise reduction system having series connected variable frequency filters ,(1981)
James C. Anderson, Speech signal A/D converter using an instantaneously-variable bandwidth filter ,(1979)
Robert E Graham, Transmission of quantized signals ,(1958)