Using knowledge on which audio frames do and do not contain voice, the prevalence of voice as opposed to silence across the audio file is also calculated simply as a derived variable.
Raw Variables
Variable
Description
aco_voiceframe
Voice frames. Number of frames in the audio where speech was detected.
aco_totvoiceframe
Total frames. Total number of frames in the audio.
aco_voicepct
Percentage of frames with voice.aco_voiceframe divided by aco_totvoiceframe.
