Analog to digital conversion method and system with the introduc

Details Analog to digital conversion method and system with the introduc Analog to digital conversion method and system with the introduc

1985-12-19

1987-10-13

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347CC, H03M 120

Patent

active

047001739

ABSTRACT:
For the distortionless conversion of an audio or like data signal from analog to digital form as by pulse code modulation, the input data signal is time division multiplexed with an analog dither (white noise) signal to provide a multiplex signal composed of the analog dither signal and an analog data/dither signal, the latter being an addition of the analog data and dither signals. Then the multiplex signal is converted from analog to digital form by one and the same analog to digital converter. The subsequent removal of the digital dither component from the digital data/dither signal provides a digital data signal as a replica of the input analog data signal. The use of the same converter for the conversion of both dither signal and data/dither signal from analog to digital form makes possible the maximum possible removal of the dither from the digital data/dither signal.

REFERENCES:
patent: 4034367 (1977-07-01), Sugiyama

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