https://github.com/jdsherbert/audio-haas-effect

Simple C++ implementation of the haas technique, with brief explanation.
https://github.com/jdsherbert/audio-haas-effect

audio audio-effect audio-effects audio-processing cpp delay haas

Last synced: over 1 year ago
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Simple C++ implementation of the haas technique, with brief explanation.

• Host: GitHub
• URL: https://github.com/jdsherbert/audio-haas-effect
• Owner: JDSherbert
• License: mit
• Created: 2024-01-19T22:16:12.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2024-01-19T22:40:20.000Z (over 2 years ago)
• Last Synced: 2025-02-13T22:38:12.573Z (over 1 year ago)
• Topics: audio, audio-effect, audio-effects, audio-processing, cpp, delay, haas
• Language: C++
• Homepage:
• Size: 25.4 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
![image](https://github.com/JDSherbert/Audio-Delay/assets/43964243/6a7b530e-8740-423b-a20b-defd88ea625b)

# Audio: Haas Effect

  











 

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## Overview

The Haas effect, also known as the precedence effect, involves using a short delay ([see my article on delay here](https://github.com/JDSherbert/Audio-Delay)) between two identical signals to create a perception of localization or spaciousness in sound. It's a psychoacoustic phenomenon where the human ear perceives the direction of a sound source based on the first arriving wavefront, and the delayed sound is fused with the original, creating a perception of a single sound source.

In the Haas effect, you have two identical signals, typically a direct signal (the original sound) and a delayed signal. The delayed signal is introduced with a very short delay, usually in the range of 1 to 40 milliseconds. This delay is short enough that the ear perceives the two signals as a single sound source. By panning the original and delayed signals differently in the stereo field, you can create a sense of spatiality or width in the sound. For example, if the original signal is panned center and the delayed signal is panned slightly to one side, it can create a sense of the sound coming from that direction.

The Haas effect is often used in audio production for widening the stereo image without creating a noticeable echo. It's particularly useful for creating a sense of spaciousness in vocals, guitars, and other mono sources.

Here's a really good article from iZotope explaining the Haas effect further, with examples:

https://www.izotope.com/en/learn/5-ways-to-adjust-phase-after-recording.htmlI

![image](https://github.com/JDSherbert/Audio-Haas-Effect/assets/43964243/afbaf0b1-29b9-411b-8ce3-6400b7bdde89)

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