# Audio Binauralizer

Convert stereo to pseudo-3D or HRTF binaural

> Canonical page: https://elysiatools.com/en/tools/audio-binauralizer

- **Category:** Media

- **Keywords:** audio, binaural, hrtf, stereo, 3d

## Overview

Uses stereo widening for pseudo-3D or SOFA-based HRTF if provided.

## Inputs

- **Audio File** (file): Select an audio file
- **Binaural Mode** (select)
- **Stereo Width** (number): 1.2
- **Phase Shift (degrees)** (number): 0
- **SOFA File (HRTF)** (file): Select a .sofa file
- **Output Gain (dB)** (number): 0
- **Output Format** (select)

## When to use

- When creating 3D audio experiences for headphones from stereo tracks.
- For enhancing podcasts or music with spatial effects to engage listeners.
- When preparing audio for virtual reality or immersive applications requiring accurate spatial cues.

## How it works

- Upload a stereo audio file in a supported format.
- Select binaural mode: pseudo-3D for stereo widening or HRTF with a SOFA file for precise spatialization.
- Adjust optional settings like stereo width, phase shift, and output gain.
- Choose an output format and download the processed binaural audio file.

## Use cases

- Enhancing music mixes for a more immersive headphone listening experience.
- Adding spatial depth to podcast audio to improve listener engagement.
- Creating binaural sound effects for virtual reality games or simulations.

## Frequently asked questions

### What is binaural audio?

Binaural audio simulates 3D sound perception for headphone listening, creating an immersive spatial experience.

### What is the difference between pseudo-3D and HRTF modes?

Pseudo-3D uses stereo widening for a wider soundstage, while HRTF uses SOFA files for accurate head-related spatial positioning.

### What audio formats are supported for input?

You can upload common audio formats like MP3, WAV, AAC, and others supported by your browser.

### Do I need a SOFA file for HRTF mode?

Yes, HRTF mode requires a SOFA file containing head-related transfer functions for processing.

### Can I adjust the stereo width in pseudo-3D mode?

Yes, you can set the stereo width from 0.5 to 2 to control the spatial expansion effect.

## Related tools

- [Audio Pan](https://elysiatools.com/en/tools/audio-pan): Pan the audio from left to right or vice-versa
- [Mono to Stereo Converter](https://elysiatools.com/en/tools/mono-to-stereo): Convert a mono audio file to stereo (by duplicating channel)
- [Stereo to Mono Converter](https://elysiatools.com/en/tools/stereo-to-mono): Convert a stereo audio file to mono
- [AAC to M4A Converter](https://elysiatools.com/en/tools/aac-to-m4a): Convert AAC audio files to M4A (MPEG-4 Audio) format with quality and channel controls
- [AAC to MP3 Converter](https://elysiatools.com/en/tools/aac-to-mp3): Convert AAC audio to MP3 with controllable bitrate, resampling, and channel selection
- [AAC to OGG Converter](https://elysiatools.com/en/tools/aac-to-ogg): Convert AAC audio files to OGG Vorbis format with quality and channel controls
- [AMR to MP3 Converter](https://elysiatools.com/en/tools/amr-to-mp3): Convert AMR (Adaptive Multi-Rate) audio files to MP3 format
- [Audio Add Silence](https://elysiatools.com/en/tools/audio-add-silence): Add a specified duration of silence to the start or end of an audio file

## 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