MCP Servers

fallaudio-mcp

Exposes audio processing tools (inspect, normalize, trim, fade, gain, filter, speed, reverse) as MCP tools, enabling Claude to manipulate WAV files through natural language commands.

README

@ai-native-solutions/fallaudio-mcp

MCP stdio server that exposes fallaudio audio ops as tools: WAV inspection, normalize, trim silence, fade in/out, gain, biquad filter, speed, reverse, trim.

Built on @modelcontextprotocol/sdk and @ai-native-solutions/fallaudio-sdk.

Install

npm install -g @ai-native-solutions/fallaudio-mcp

Wire into Claude Code

claude mcp add fallaudio -- npx -y @ai-native-solutions/fallaudio-mcp

Or manually, .mcp.json:

{
  "mcpServers": {
    "fallaudio": {
      "command": "npx",
      "args": ["-y", "@ai-native-solutions/fallaudio-mcp"]
    }
  }
}

Tools

Tool	Purpose
`inspect`	Report sample rate, channels, duration, peak/RMS dB
`normalize`	Peak-normalize to 0.99
`trim_silence`	Strip leading/trailing silence below threshold
`fade`	Fade in and/or fade out in seconds
`gain`	Apply dB gain (positive or negative), optional range
`filter`	Biquad `lowpass` / `highpass` / `bandpass` at a cutoff freq
`speed`	Time-stretch (and pitch-shift) by a factor
`reverse`	Reverse the audio
`trim`	Trim to a `[start, end)` sample range

Every editing tool takes an input path and an output path (both .wav) and returns JSON with the number of bytes written.

Resources

fallaudio://ops — signature reference for the edit ops
fallaudio://filters — RBJ biquad recipe notes
fallaudio://wav-format — encoder/decoder format notes

Example

Ask Claude:

"Use fallaudio to inspect ./recording.wav, then normalize it, apply a highpass filter at 80 Hz to kill rumble, add a 250 ms fade in and fade out, and save it as ./clean.wav."

Claude will chain inspect → normalize → filter → fade.

License

MIT · ai-nativesolutions.com

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