Related to data

unsigned long DataVecSize(data_t *data)
Returns the real length of the feature vectors.

param_t *DataGetVec(data_t *data, int n, unsigned long nelem)
Returns a pointer to vector n in the data. The third argument is the real feature vector length to avoid recomputing it at each invocation of this function. Vectors are numbered starting with index 0 and NULL is returned if n has an invalid value.

void DataZeroMean(data_t *data, unsigned long n)
Suppress the long term mean of the static coefficients in data. If n is not null, the mean is removed over consecutive windows of n frames.

void CepLifter(vector_t *v, int l)
Apply cepstral liftering to coefficients in v.

void ScaleEnergy(data_t *p, float s)
Scale energy according to $s$.