# Audio Band-Reject Filter

Remove a specific band of frequencies

> Canonical page: https://elysiatools.com/en/tools/audio-band-reject-filter

- **Category:** Media

- **Keywords:** audio, filter, notch, bandstop, band-reject

## Overview

Cuts a narrow band around a center frequency (notch) to tame resonances, hum, or harshness.

## Inputs

- **Audio File** (file): Select an audio file
- **Center Frequency (Hz)** (number): 1000
- **Bandwidth (Hz)** (number): 200
- **Output Format** (select)

## When to use

- When eliminating electrical hum or buzz from audio recordings.
- To remove resonant frequencies that cause feedback in live sound setups.
- When editing audio to cut out harsh or piercing tones without affecting the overall sound.

## How it works

- Upload your audio file in a supported format such as MP3 or WAV.
- Set the center frequency in Hz to target the specific band you want to remove.
- Adjust the bandwidth in Hz to define the width of the frequency cut.
- Choose an output format and download the processed audio file.

## Use cases

- Removing 60 Hz hum from home studio recordings.
- Eliminating feedback frequencies during podcast editing.
- Cleaning up audio tracks by cutting specific resonant tones in music production.

## Frequently asked questions

### What audio formats are supported for upload?

The tool accepts common audio formats like MP3, WAV, AAC, and others listed in the output options.

### How do I choose the correct center frequency?

Identify the problematic frequency using audio analysis tools or by ear, then input it as the center frequency.

### Can I process multiple audio files at once?

No, this tool processes one audio file at a time for precise control over the filtering.

### What does the bandwidth setting control?

The bandwidth determines the width of the frequency band that is attenuated around the center frequency.

### Is there a limit on the audio file size?

Yes, the audio file must be under 200 MB to be processed by the tool.

## Related tools

- [Audio Notch Filter](https://elysiatools.com/en/tools/audio-notch-filter): Remove a very narrow frequency band (e.g., hum)
- [Spectral Denoiser](https://elysiatools.com/en/tools/spectral-denoiser): Reduce broadband noise with a spectral filter chain
- [Audio High-Pass Filter](https://elysiatools.com/en/tools/audio-high-pass-filter): Apply a high-pass filter to remove low frequencies
- [Audio Hum Harmonic Remover](https://elysiatools.com/en/tools/audio-hum-harmonic-remover): Remove 50/60Hz electrical hum and harmonic buzz from audio recordings.
- [Audio Hum Removal](https://elysiatools.com/en/tools/audio-hum-removal): Remove electrical hum (50/60Hz and harmonics) from audio
- [Invert Channel Phase](https://elysiatools.com/en/tools/audio-invert-phase): Invert the phase of one channel (for vocal removal effect)
- [Audio Low-Pass Filter](https://elysiatools.com/en/tools/audio-low-pass-filter): Apply a low-pass filter to remove high frequencies
- [Audio Filler Word Removal Map](https://elysiatools.com/en/tools/audio-filler-word-removal-map): Combine a timestamped transcript with the audio to mark filler words (um, uh, 嗯, 那个…) and optionally mute or remove them.

## Samples

- [Copyright-Free FLAC Audio Samples](https://elysiatools.com/en/samples/flac-samples): Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
- [Copyright-Free MP3 Audio Samples](https://elysiatools.com/en/samples/mp3-samples): Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio
- [Copyright-Free WAV Audio Samples](https://elysiatools.com/en/samples/wav-samples): Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
- [Copyright-Free Raw PCM Audio Samples](https://elysiatools.com/en/samples/pcm-samples): Raw PCM s16le audio samples featuring nature ambience and relaxing music for waveform, playback, and conversion workflows

## Related content

- [Audio Restoration, Noise Repair, and Cleanup Tools](https://elysiatools.com/en/hubs/audio-restoration-repair-workflows): Diagnose and repair clicks, hum, clipping, crackle, room sound, hiss, and harshness without promising lossless restoration.