Common Functions

This section describes functions common to different speech codecs. The list of these functions is given in the table below.

Intel IPP Common Speech Coding Functions
Function Base Name	Operation
ConvPartial	Performs linear convolution of 1D signals.
InterpolateC_NR	Computes the weighted sum of two vectors.
Mul_NR	Multiplies the elements of two vectors.
MulC_NR	Multiplies each element of a vector by a constant value.
MulPowerC_NR	Performs power weighting for each element of a vector.
AutoScale	Scales by the maximal elements.
DotProdAutoScale	Computes the dot product of two vectors using the automatic scaling.
InvSqrt	Computes inverse square root of vector elements.
AutoCorr	Calculates autocorrelation of a vector.
AutoCorrLagMax	Estimates the maximum auto-correlation of a vector.
AutoCorr_NormE	Estimates normal auto-correlation of a vector.
CrossCorr	Estimates the cross-correlation of two vectors.
CrossCorrLagMax	Estimates the maximum cross-correlation between two vectors.
SynthesisFilter	Computes the speech signal by filtering the input speech through the synthesis filter 1/A(z).