Performs a robust validation of the |candidate_delay| estimated in WebRtc_ProcessBinarySpectrum(). The algorithm takes the |is_instantaneous_valid| a

Compute speech/noise probability. Speech/noise probability is returned in |probSpeechFinal|. |magn| is the input magnitude spectrum. |noise| is the no

Update the noise estimate. Inputs: |magn| is the signal magnitude spectrum estimate. |snrLocPrior| is the prior SNR. |snrLocPost| is the post SNR. Out

Collects necessary statistics for the HistogramBasedValidation(). This function has to be called prior to calling HistogramBasedValidation(). The st

only buffer L band for farend

minLevel - Minimum volume level * maxLevel - Maximum volume level */

Initialize state.

Don't call this directly except in tests!

lowpass filter input: int32_t (shifted 15 positions to the left, + offset 16384) output: int32_t (normalized, not saturated) state: filter state arr

Return the number of steps a can be left-shifted without overflow, or 0 if a == 0.

Creates an array of uniformly distributed variables

48 -> 8 resampler

initialize state of 48 -> 8 resampler

Inserts |feature_value| into |low_value_vector|, if it is one of the 16 smallest values the last 100 frames. Then calculates and returns the median of

Initialize the VAD. Set aggressiveness mode to default value.

check the validness of header :param header: header :return: True/False

check stop :param message: secret message :return: True/False