dpcmdeco - Decode using differential pulse code modulation
Syntax
sig = dpcmdeco(indx,codebook,predictor)
[sig,quanterror] = dpcmdeco(indx,codebook,predictor)
Description
sig = dpcmdeco(indx,codebook,predictor) implements
differential pulse code demodulation to decode the vector indx.
The vector codebook represents the predictive-error
quantization codebook. The vector predictor specifies
the predictive transfer function. If the transfer function has predictive
order M, predictor has length M+1 and an initial
entry of 0. To decode correctly, use the same codebook and predictor
in dpcmenco and dpcmdeco.
See Representing Partitions, Representing Codebooks, or the quantiz reference page, for a description
of the formats of partition and codebook.
[sig,quanterror] = dpcmdeco(indx,codebook,predictor) is
the same as the syntax above, except that the vector quanterror is
the quantization of the predictive error based on the quantization
parameters. quanterror is the same size as sig.
Note
You can estimate the input parameters codebook, partition,
and predictor using the function dpcmopt. |
Examples
See Example: DPCM Encoding and Decoding and Example: Comparing Optimized and Nonoptimized DPCM Parameters for
examples that use dpcmdeco.
See Also
quantiz, dpcmopt, dpcmenco, Differential Pulse Code Modulation
References
[1] Kondoz, A. M., Digital
Speech, Chichester, England, John Wiley & Sons, 1994.
 | doppler.rounded | | dpcmenco |  |
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