FeatureSet method: normframe

Syntax: <feature set> normframe <feature> <source_feature> [optional flags]

Example: fs normframe NMEL MEL -L 1 -add 1

Normalize each frame of the <source_feature> and store result in <feature>. The norm itself can be added as additional coefficient or stored in an extra feature.

Optional flags:

-L <p>

Order of calculated norm: (SUM |x[i]|^p)^1/p, p = 1 or 2

-n <extra feature>

Store norm in <extra feature>.

-add <boolean>

If the norm should be added as additional coefficient to the new <feature> set <boolean> to 1.