Module imbe::enhance

Frame repeat/muting, spectral amplitude enhancement, and adaptive smoothing.

Structs

EnhanceErrors	Values derived from error correction decoding.
EnhancedSpectrals	Enhanced spectral amplitudes, "overbar" Ml, are derived from the decoded spectral amplitudes, "tilde" Ml.
FrameEnergy	Energy-related parameters for a voice frame.

Functions

amp_thresh	Compute the spectral amplitude threshold τM used in adaptive smoothing from the given error characteristics and previous amplitude threshold.
should_mute	Check if the current frame should be discarded and replaced with silence/comfort noise based on the given error characteristics of the current frame.
should_repeat	Check whether the current frame should be discarded and the previous repeated based on the given error characteristics of the current frame.
smooth	Smooth the given enhanced spectral amplitudes Ml and voiced/unvoiced decisions vl based on the given error characteristics, current frame energy, and spectral amplitude threshold τM for the current frame.