The normalizer module removes undesirable acoustic characteristics from the audio, such as speaker and audio channel effects. Audio normalization is a preprocessing requirement in most audio analysis operations, such as speech to text.
| Mode | Input | Output | Description |
|---|---|---|---|
BLOCK
|
f
|
nf
|
In BLOCK mode, the normalization is calculated over the whole utterance. Recommended for short utterances. |
RUNNING
|
f
|
nf
|
In RUNNING mode, the normalization process continuously adapts to the acoustic properties of the input audio. |
RUNNING
|
f, w |
nf
|
If the |
Example:
nf <- normalizer(_, f)
nf <- normalizer(BLOCK, f)
nf <- normalizer(_, f, w)
| DnnFile |
| DnnFileStd |
| IANFile* |
| ZeroNoiseFrames |
| ZeroSilFrames |
*You must set the value of this configuration parameter by setting the corresponding action parameter.
|
|