Device for converting a non-uniformly sampled signal with short-

Details Device for converting a non-uniformly sampled signal with short- Device for converting a non-uniformly sampled signal with short-

1979-02-01

1981-06-02

Stewart, David L.

Multiplex communications

Wide area network

Packet switching

179 15A, G10L 106, G06G 719, G06G 730

Patent

active

042715008

ABSTRACT:
A device for forming omitted samples by extrapolation in a transmitted signal having non-uniform, grouped samples representing a short-time stationary signal such as speech. The grouped samples are passed through a series of delay circuits. Fourier transformation of the samples is performed to form omitted samples which are inserted in the signal between the grouped samples. The Fourier transformation is used to select multiplication coefficients which are multiplied by the sample amplitudes, with the products of the multiplication being summed to form the omitted samples. In one embodiment the extrapolation is performed in both carry forward and carry back circuits.

REFERENCES:
patent: 3548107 (1970-12-01), Webb
patent: 3808412 (1974-04-01), Smith
patent: 4021616 (1977-05-01), Bots

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