Audio Goniometer

Audio Goniometer | 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, text, select, number
Output type: file
Sample coverage: 4
API ready: Yes

Overview

The Audio Goniometer tool generates a polar stereo image to visualize the width and panning of audio signals. It uses FFmpeg's avectorscope in polar mode for a clear goniometer-style display, ideal for audio analysis and mixing.

When to use

When you need to check the stereo balance of an audio mix for proper imaging.
For visualizing panning effects in stereo audio files during production or mastering.
In educational settings to demonstrate stereo field concepts using audio examples.

How it works

1Upload an audio file in a supported format, such as MP3 or WAV.
2Optionally configure settings like image size, draw mode (dot, line, or anti-aliased line), and zoom level.
3The tool processes the audio using FFmpeg's avectorscope filter in polar mode to create the visualization.
4Download the resulting polar stereo image file for analysis or reference.

Use cases

Audio engineers analyzing stereo mixes to identify balance issues or phase problems.
Music producers verifying the panning of individual tracks in a multitrack session.
Educators creating visual aids for teaching stereo imaging and audio spatialization.

Examples

1. Analyzing Stereo Balance in a Music Mix

Audio Engineer

Background

An audio engineer is finalizing a stereo mix and needs to ensure the overall balance is even across the stereo field.

Problem

Quickly visualize the stereo width and panning to detect any imbalances or mono elements.

How to use

Upload the mixed audio file, set the draw mode to 'Anti-aliased Line' for clarity, and generate the image with a size of 800 pixels.

size: 800, drawMode: aaline, zoom: 1

Outcome

The goniometer image shows a symmetric spread, confirming a well-balanced stereo mix with appropriate panning.

2. Verifying Panning Effects in a Podcast

Podcast Producer

Background

A podcast producer has added sound effects with left-right panning and wants to check the effect before publishing.

Problem

Ensure that panned audio elements are correctly positioned and not causing phase issues.

How to use

Upload the podcast audio file, use default settings or adjust zoom for a closer look, and review the generated polar image.

FAQ

What audio file formats are supported?

The tool accepts common audio formats compatible with FFmpeg, such as MP3, WAV, and AAC, up to 200 MB in size.

How do I interpret the goniometer image?

The polar plot shows the stereo field; points near the center represent mono signals, while spread indicates stereo width and panning.

Can I customize the image appearance?

Yes, you can adjust the image size, choose between dot, line, or anti-aliased line draw modes, and set a zoom level from 0.1 to 10.

What is the purpose of the draw mode options?

Draw mode affects how audio data is plotted: dots for discrete points, lines for continuous traces, or anti-aliased lines for smoother visuals.

Is there a limit on audio file length?

The tool focuses on file size (up to 200 MB) rather than length, but longer files may take more time to process.

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Inputs

Result

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. Analyzing Stereo Balance in a Music Mix

2. Verifying Panning Effects in a Podcast

FAQ

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