Sometimes, there might be sounds and speech (often names or explicit language) that might need to be redacted. Depending on what you specified at the time of setting redaction properties , the audio is either beeped or silenced.
To redact audio:
When the audio redaction completes, an audio element is listed in the Audio Elements for Redaction pane.
After the redaction operation completes, preview the redacted audio elements, by clicking the Preview Redaction icon. The icon looks like this: