Digital to analog conversion method and system with the introduc

Details Digital to analog conversion method and system with the introduc Digital to analog conversion method and system with the introduc

1985-12-19

1987-08-11

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

340347M, H03M 100

Patent

active

046865098

ABSTRACT:
A digital data signal such as a digitized audio signal is time division multiplexed with a digital dither signal to provide a multiplex signal compound of the digital dither signal and a digital data/dither signal, the latter being an addition of the digital data and dither signals. Then the multiplex signal is converted from digital to analog form by one and the same digital to analog converter. The subsequent removal of the analog dither signal from the analog data/dither signal provides an analog data signal as a replica of the digital data signal. The use of the same converter for the conversion of both dither signal and data/dither signal from digital to analog form makes possible the maximum possible removal of the dither from the analog data/dither signal.

REFERENCES:
patent: 3562420 (1971-02-01), Thompson
patent: 3999129 (1976-12-01), Kasson
"The Application of Large Amplitude Dither to the Quantization of Wide Range Audio Signals", Yoshio Yamasaki, The Journal of the Acoustical Society of Japan, vol. 39, No. 3, 1983.

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