---
title: "Band-pass"
slug: "band-pass"
updated: 2025-10-15T07:05:38Z
published: 2025-10-15T07:05:38Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://composer.docs.vindral.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Band-pass

A bandpass audio filter is a type of filter that allows frequencies within a certain range (or band) to pass through while attenuating (reducing) frequencies outside that range.

The band-pass operator supports high pass, low pass and notch audio filters.

![image.png](https://cdn.document360.io/94808959-fd66-406c-ab5e-4691ce952a14/Images/Documentation/image%28149%29.png)

**Settings**

- **Band-Pass Mode** - High Pass, Low Pass or notch.
- **Cut-off Frequency (Hz)** - Cut-off frequency for the selected mode
- **Q (1-10)** - Defines how steep the filter is.

          Note

          

This operator displays the audio **input level** before processing and the **output level** after the operator has been applied, allowing you to monitor how the adjustments affect the signal.

A miniature audio meter (VU meter) in the header indicates incoming audio, so you can quickly verify that the operator is receiving audio even when it is collapsed.

          Tip

          

Use [Settings](/docs/settings-audio) to adjust how long the signal overload indicator stays active, and [Project Options](/docs/runtime-performance) to change the maximum peak level displayed in all audio meters to your preference.

For more information on audio, see [Working with audio in scenes](/v1/docs/working-with-audio-in-scenes).

(The operator is available in Composer R1 2025 and later)