{
  "slug": "audio-eq",
  "name": "gizza-ai/audio-eq",
  "version": "0.1.0",
  "title": "Audio Equalizer Online — gizza.ai",
  "description": "Equalize any audio file right in your browser — boost or cut bass, mid and treble in dB, then save as MP3, WAV and more. Nothing is uploaded, free.",
  "tags": [
    "audio",
    "equalizer",
    "eq",
    "bass",
    "treble",
    "mid",
    "boost",
    "tone"
  ],
  "category": "audio",
  "urls": {
    "page": "https://gizza.ai/tools/audio-eq/",
    "markdown": "https://gizza.ai/tools/audio-eq/index.md",
    "descriptor": "https://gizza.ai/tools/audio-eq/tool.json",
    "deep_link_example": "https://gizza.ai/tools/audio-eq/?url=https://example.com/input&bass=0&mid=0&treble=0&format=mp3"
  },
  "cli": "gizza tool audio-eq 'url=https://example.com/input' 'bass=0' 'mid=0' 'treble=0' 'format=mp3'",
  "tool": {
    "description": "Apply a three-band equalizer to an audio file. Provide either url (HTTP/HTTPS) or ref (id from a prior tool call). bass (low shelf ~100 Hz), mid (1 kHz peaking band) and treble (high shelf ~3 kHz) are gains in dB from -20 to 20; 0 leaves a band unchanged and at least one band must be non-zero. Typical fixes: bass 6 to warm a thin recording, mid -4 for a boxy voice, treble 4 to brighten a dull one. Output is re-encoded to mp3 (192 kbps), wav, ogg, flac or m4a; embedded album art is dropped.",
    "parameters": {
      "additionalProperties": false,
      "oneOf": [
        {
          "required": [
            "url"
          ]
        },
        {
          "required": [
            "ref"
          ]
        }
      ],
      "properties": {
        "bass": {
          "default": 0.0,
          "description": "Bass gain in dB (low shelf, ~100 Hz): 6 warms it up, -6 tames boominess. 0 leaves the band unchanged.",
          "maximum": 20,
          "minimum": -20,
          "type": "number"
        },
        "format": {
          "default": "mp3",
          "description": "Output audio format. Default mp3 (192 kbps).",
          "enum": [
            "mp3",
            "wav",
            "ogg",
            "flac",
            "m4a"
          ],
          "type": "string"
        },
        "mid": {
          "default": 0.0,
          "description": "Mid gain in dB (1 kHz peaking band): boost for vocal presence, cut for a boxy sound. 0 leaves the band unchanged.",
          "maximum": 20,
          "minimum": -20,
          "type": "number"
        },
        "ref": {
          "description": "Reference id from a prior tool call. Use either url or ref.",
          "type": "string"
        },
        "treble": {
          "default": 0.0,
          "description": "Treble gain in dB (high shelf, ~3 kHz): 4 brightens, -4 softens hiss/harshness. 0 leaves the band unchanged.",
          "maximum": 20,
          "minimum": -20,
          "type": "number"
        },
        "url": {
          "description": "Audio URL (HTTP/HTTPS). Use either url or ref.",
          "type": "string"
        }
      },
      "type": "object"
    }
  }
}