Audio High-Pass Filter

Audio High-Pass Filter | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

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

1Upload an audio file in a supported format like MP3, WAV, or AAC.
2Set the cutoff frequency in Hz to define where the filter starts cutting low frequencies.
3Adjust the order parameter to control the steepness of the filter slope.
4Choose 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.

{"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.

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.

{"cutoffHz": 100, "order": 2, "outputFormat": "mp3"}

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Remove Electrical Hum from Studio Recording

2. Enhance Podcast Voice Clarity

FAQ

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