Receiver providing masking of an error in a digital signal, and

Details Receiver providing masking of an error in a digital signal, and Receiver providing masking of an error in a digital signal, and

1994-04-22

1997-05-27

Baker, Stephen M.

Excavating

H03M 1300

Patent

active

056338805

ABSTRACT:
A receiver including an error masking unit for masking an error in a digital signal received by the receiver, and a transmission system including such a receiver. The transmission system includes a transmitter which sub-band codes a wide-band digital signal into sub-band signals having signal blocks containing a predetermined number of samples which the transmitter quantizes and combines with bit allocation information denoting how many bits each of the samples in the signal blocks are quantized by and scale factor information relating to scale factors for the signal blocks into a digital signal. That digital signal is error correction encoded and then applied to a transmission medium by the transmitter. The receiver receives a digital signal from the transmission medium which substantially corresponds to the digital signal applied to the transmission system by the transmitter and decodes that digital signal so as to produce a replica of the wide-band digital signal encoded by the transmitter. The error masking unit is used during decoding for error masking information having uncorrected errors. The error masking unit is capable of masking an uncorrected error pertaining to the quantized samples, the bit allocation information, the scale factor information and/or sync information included in the digital signal received by the receiver.

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