Evidence · first-party tested

The speech stayed clear and understandable, but the original voice tone and character changed noticeably, so the output sounded different from the source.

◐ Mixed🧾 artifact-verifiedTested Jun 16, 2026Cleanvoice
Output — unretouched
Cleanvoice — AI_demos_direction_ac_and_fan_on-Cleanvoice.wav
Cleanvoice — AI_demos_direction_ac_and_fan_on-Cleanvoice.wav
The observation

The speech stayed clear and understandable, but the original voice tone and character changed noticeably, so the output sounded different from the source.

Criterion: Voice Preservation · Scenario: Outside in balcony birds vehicles and surrounding noise (group: background-noise-removal-audio)
Query this
get_evidence({
  tool: "cleanvoice",
  scenario: "background-noise-removal-audio"
})
MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Real outputs, no retouching · every cell queryable via API & MCP · aidemos.com