Noise Reduction Functions

The functions described here implement building blocks that can be used to create an background noise canceller or other noise processing components, such as Noise Pre-Processing compliant to the Microsoft RT Audio codec.

• FilterNoiseGetStateSize
  Calculates the size of the state structure for the noise reduction filter
• FilterNoiseInit
  Initializes the state structure for the noise reduction filter
• FilterNoiseLevel
  Sets the level of the noise attenuation.
• FilterNoiseDetect_EC
  Performs noise detection for EC noise filtering.
• FilterNoiseDetectModerate_EC
  Performs noise detection for EC noise filtering.
• FilterNoiseSetMode_EC
  Sets type of the smoothing filter.
• FilterNoise
  Performs noise reduction filtering

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