Sources for the /sermon-audio-cleanup/ samples
Prepared November 3, 2026. Each "original" is a 30-second excerpt of a real archived sermon recording, cleared for
Diffio use, with nothing added. Each "restored" file is Diffio 4.6 Pro's restored speech from the Diffio API on
November 3, 2026, with no background mixed in. Both files in a pair have one fixed gain so they play at about the
same loudness. No other processing. Details: manifest.json.

Caption shown for each sample: Real archived sermon recording, cleared for Diffio use. Restored with Diffio 4.6 Pro.
Both clips are loudness-matched for playback.

vfc-53200 (vfc-53200-original.mp3, vfc-53200-restored.mp3): archived sermon, church reverb.
vfc-52765 (vfc-52765-original.mp3, vfc-52765-restored.mp3): archived sermon, church reverb.
vfc-108814 (vfc-108814-original.mp3, vfc-108814-restored.mp3): archived sermon, church reverb and a distant microphone.

An automated listening check still hears some reverb in all 3 restored clips, less than in the originals.