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Audio High-Pass Filter

Apply a high-pass filter to remove low frequencies

Cuts low-end rumble below the cutoff to clean muddy audio or remove hum.

Click to upload file or drag and drop file here

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

Key Facts

Category
Media
Input Types
file, number, select
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

The Audio High-Pass Filter tool applies a high-pass filter to audio files, removing low frequencies below a specified cutoff to reduce rumble, hum, and muddiness, resulting in cleaner and clearer audio.

When to Use

  • •When audio recordings have low-frequency noise or hum that needs removal.
  • •To clean up muddy audio by attenuating bass frequencies for better clarity.
  • •Before audio processing or mixing to isolate and enhance higher frequencies.

How It Works

  • •Upload an audio file in a supported format like MP3, WAV, or AAC.
  • •Set the cutoff frequency in Hz to define where the filter starts cutting low frequencies.
  • •Adjust the order parameter to control the steepness of the filter slope.
  • •Choose an output format and download the filtered audio file.

Use Cases

Podcast editing to remove background hum and improve voice clarity.
Music production to clean up vocal or instrument tracks by reducing low-end rumble.
Video sound design to enhance audio quality by filtering out unwanted low frequencies.

Examples

1. Remove Electrical Hum from Studio Recording

Audio Engineer
Background
A studio recording has a persistent 60 Hz hum from electrical interference.
Problem
The hum is audible and reduces audio quality.
How to Use
Upload the audio file, set the cutoff frequency to 80 Hz to target the hum, increase the order to 4 for a sharp cut, and output as WAV for high quality.
Example Config
{"cutoffHz": 80, "order": 4, "outputFormat": "wav"}
Outcome
The hum is effectively removed, resulting in clean audio without significantly affecting higher frequencies.

2. Enhance Podcast Voice Clarity

Podcast Host
Background
Podcast episodes sound muddy due to excessive low-end in the voice recording.
Problem
Listeners find it hard to understand the speech clearly.
How to Use
Apply a high-pass filter with a cutoff at 100 Hz and order 2 to gently reduce bass, then save as MP3 for distribution.
Example Config
{"cutoffHz": 100, "order": 2, "outputFormat": "mp3"}
Outcome
The voice becomes clearer and more intelligible, improving the listening experience.

Try with Samples

audio, video, file
Copyright-Free AAC Audio Samples
High-quality AAC encoded audio samples for testing and development, featuring nature sounds and meditation music with excellent compression
title token audio
audio
Copyright-Free MP3 Audio Samples
Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio
title token audio
audio
Copyright-Free WAV Audio Samples
Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
title token audio
audio
Copyright-Free OGG Vorbis Audio Samples
Open-source OGG Vorbis audio samples for testing and development, featuring excellent compression with nature sounds and meditation music
title token audio
audio

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FAQ

What is a high-pass filter?

A high-pass filter allows frequencies above a cutoff point to pass through while attenuating lower frequencies.

How does the cutoff frequency affect the audio?

The cutoff frequency sets the threshold below which frequencies are reduced; lower values preserve more bass.

What does the order parameter control?

The order determines how sharply the filter cuts off frequencies; higher orders result in a steeper slope.

What audio formats are supported for input and output?

You can upload any audio file, and download in formats like MP3, AAC, M4A, OGG, Opus, FLAC, or WAV.

Is there a file size limit for uploads?

Yes, the maximum file size for upload is 200 MB.

API Documentation

Request Endpoint

POST /en/api/tools/audio-high-pass-filter

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes -
cutoffHz number No -
order number No -
outputFormat select No -

File type parameters need to be uploaded first via POST /upload/audio-high-pass-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-high-pass-filter": {
      "name": "audio-high-pass-filter",
      "description": "Apply a high-pass filter to remove low frequencies",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-high-pass-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]