Method of reconstructing an analog signal, particularly in digital telephony applications, and a circuit device implementing the method
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United States of America Patent
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May 7, 1991
Issued Date -
N/A
app pub date -
Jan 24, 1990
filing date -
Jan 9, 1987
priority date (Note) -
Expired
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Abstract
A method of reconstructing an analog signal, particularly for digital telephony, comprises a first step of digital-to-analog conversion, wherein a first reconstruction of the analog signal is provided by introducing a distortion component into the frequency spectrum whose amplitude decreases with the signal frequency, and a second step of filtering carried out by means of a reconstruction filter provided with integrators and having a cut-off frequency F.sub.t. That attenuating distortion component is utilized instead of one of the integrators in the reconstruction filter, to afford a reduction of the overall design of the circuit device operating in accordance with this method, and bring about, as a result, decreased occupation of the integrated circuit and power dissipation.
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