Audio Notch Filter

Audio Notch 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 Notch Filter is a utility tool designed to remove narrow frequency bands from audio files, such as 50/60Hz hum or resonant ringing. It uses a bandreject filter to precisely target and eliminate problematic frequencies, improving audio clarity with adjustable settings for center frequency, bandwidth, and depth.

When to use

To eliminate 50/60Hz electrical hum from audio recordings.
When removing unwanted resonant frequencies or ringing sounds.
For cleaning up audio tracks before editing or distribution to enhance quality.

How it works

1Upload your audio file in a supported format like MP3, WAV, or AAC.
2Set the center frequency in Hz to target the specific problem band, such as 60Hz for hum.
3Adjust the bandwidth (Hz) to define the width of the frequency range and depth (dB) to control attenuation strength.
4Choose an output format and download the processed audio file.

Use cases

Removing background hum from podcast or interview recordings.
Cleaning up audio in video production to eliminate electrical interference.
Enhancing music tracks by cutting unwanted resonant frequencies for better sound quality.

Examples

1. Remove 60Hz Hum from Podcast Recording

Podcast Producer

Background

A podcast episode recorded in a studio with electrical equipment introduces a persistent 60Hz hum.

Problem

The hum is audible throughout the recording, distracting listeners and reducing audio quality.

How to use

Upload the audio file, set center frequency to 60Hz, bandwidth to 10Hz, depth to -30dB, and output format to MP3.

Outcome

The hum is significantly reduced, resulting in a clean and professional audio track ready for publishing.

2. Eliminate 440Hz Ringing in Guitar Track

Musician

Background

A recorded guitar track has an unwanted ringing sound at 440Hz due to room acoustics or equipment resonance.

Problem

The ringing masks the desired guitar tone and needs to be removed without affecting the overall sound.

How to use

Upload the file, set center frequency to 440Hz, bandwidth to 5Hz, depth to -20dB, and export as WAV for high quality.

Outcome

The ringing is effectively removed, preserving the natural tone of the guitar for a cleaner mix.

FAQ

What audio file formats can I upload?

The tool accepts any audio format supported by your browser, including MP3, WAV, AAC, and others.

How do I determine the correct center frequency to remove?

Common hum frequencies are 50Hz or 60Hz depending on your region. Use audio analysis software to identify exact frequencies if needed.

What does the bandwidth setting control?

Bandwidth defines the width of the frequency band around the center that will be attenuated. A narrower bandwidth targets a more specific range.

Is there a file size limit for uploads?

Yes, the maximum file size is 200MB. Larger files cannot be processed with this tool.

What output formats are available?

You can choose from MP3, AAC, M4A, OGG Vorbis, Opus, FLAC, or WAV formats.

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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 60Hz Hum from Podcast Recording

2. Eliminate 440Hz Ringing in Guitar Track

FAQ

Copyright-Free FLAC Audio Samples

Copyright-Free MP3 Audio Samples

Copyright-Free WAV Audio Samples

Copyright-Free Raw PCM Audio Samples

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