audioDelta
Compute delta features
Syntax
Description
specifies the delta window length.delta
= audioDelta(x
,deltaWindowLength
)
specifies the initial condition of the filter.delta
= audioDelta(x
,deltaWindowLength
,initialCondition
)
[
also returns the final condition of the filter.delta
,finalCondition
] = audioDelta(x
,___)
Examples
Input Arguments
Output Arguments
Algorithms
The audioDelta function uses a least-squares approximation of the local slope over a region centered on sample x(k), which includes M samples before the current sample and M samples after the current sample.
M is equal to
floor(
. For details, see [1].deltaWindowLength
/2)
References
[1] Rabiner, Lawrence R., and Ronald W. Schafer. Theory and Applications of Digital Speech Processing. Upper Saddle River, NJ: Pearson, 2010.
Extended Capabilities
Version History
See Also
mfcc
| gtcc
| Extract Audio
Features | designAuditoryFilterBank
| stft
| cepstralCoefficients