Function alass::alass_voice_activity_clean

#[no_mangle]
pub extern "C" fn alass_voice_activity_clean(
    activity: *mut VoiceActivity, 
    opening_radius: usize, 
    closing_radius: usize
) -> *mut VoiceActivity

[EXPERIMENTAL] Cleans voice-activity data

This operation successively employs mathematical morphological 'erosion' and 'dilationoperators to clean the output of the voice-activity detector. The result is a clone of the originalVoiceActivity` instance having cleaner/fewer timespans.

The opening_radius and closing_radius parameters represent the kernel radii of the mathematical morphological operators. Each radius determines a window of size (2r+1)*CHUNK_MILLIS milliseconds. Any errant spans smaller than this window will be removed and any gaps larger than this window will be filled.