Audio Spectral Filter

Filter audio based on its spectral content

Applies frequency-domain filtering to shape audio spectrum with surgical precision. Uses FFT-based processing to boost, cut, or notch specific frequency ranges while preserving temporal characteristics. Ideal for spectral enhancement, noise reduction, and creative frequency manipulation.

Audio File *

Click to upload file or drag and drop file here

Maximum file size: 200MB Supported formats: audio/*

Filter Type

Type of spectral filtering to apply. Each type has different frequency shaping characteristics.

Low Frequency (20-1000 Hz)

Center frequency for low frequency band adjustments.

Low Gain (-20 to 20 dB)

-20 -20 20

Gain adjustment for low frequency band. Positive = boost, Negative = cut.

Mid Frequency (200-5000 Hz)

Center frequency for mid frequency band adjustments.

Mid Gain (-20 to 20 dB)

-20 3 20

Gain adjustment for mid frequency band. Positive = boost, Negative = cut.

High Frequency (1000-20000 Hz)

Center frequency for high frequency band adjustments.

High Gain (-20 to 20 dB)

-20 2 20

Gain adjustment for high frequency band. Positive = boost, Negative = cut.

Filter Sharpness (0-1.0)

0 0.5 1

How steep the filter transitions are. Higher values = more precise frequency targeting.

Resonance Amount (0-1.0)

0 0.3 1

Adds feedback character to the filter. Higher values = more pronounced filter response.

Wet/Dry Mix (0-1.0)

0 0.85 1

Balance between dry (original) and wet (filtered) signal.

Output Format

API Documentation

Request Endpoint

POST /en/api/tools/audio-spectral-filter

Request Parameters

Parameter Name	Type	Required	Description
audioFile	file (Upload required)	Yes	-
filterType	select	No	Type of spectral filtering to apply. Each type has different frequency shaping characteristics.
lowFreq	number	No	Center frequency for low frequency band adjustments.
lowGain	range	No	Gain adjustment for low frequency band. Positive = boost, Negative = cut.
midFreq	number	No	Center frequency for mid frequency band adjustments.
midGain	range	No	Gain adjustment for mid frequency band. Positive = boost, Negative = cut.
highFreq	number	No	Center frequency for high frequency band adjustments.
highGain	range	No	Gain adjustment for high frequency band. Positive = boost, Negative = cut.
sharpness	range	No	How steep the filter transitions are. Higher values = more precise frequency targeting.
resonance	range	No	Adds feedback character to the filter. Higher values = more pronounced filter response.
mix	range	No	Balance between dry (original) and wet (filtered) signal.
outputFormat	select	No	-

File type parameters need to be uploaded first via POST /upload/audio-spectral-filter to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

File: File

AI MCP Documentation

Add this tool to your MCP server configuration:

{
  "mcpServers": {
    "elysiatools-audio-spectral-filter": {
      "name": "audio-spectral-filter",
      "description": "Filter audio based on its spectral content",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-spectral-filter",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]