HRTF (Head-Related Transfer Function)
Less than 1 minute
HRTF (Head-Related Transfer Function)
Overview
HRTF provides binaural audio rendering, converting multi-channel audio into 3D spatial audio suitable for headphone playback.
Features
- Binaural Rendering: Convert any audio to stereo headphones
- 4 Headphone Profiles: Flat, ClosedBack, OpenBack, IEM
- 3D Positioning: Full azimuth and elevation support
- Standard Dataset: KEMAR measurements
Usage
Basic Example
use audio_ninja::hrtf::{BinauralRenderer, HeadphoneProfile, HrtfDatabase};
let mut db = HrtfDatabase::new();
db.load_default_kemar().unwrap();
let renderer = BinauralRenderer::new(db, HeadphoneProfile::Flat);
// Render mono to stereo binaural
let mono_input = vec![0.5; 512];
let position = HrtfPosition::new(45.0, 0.0, 1.0);
let (left, right) = renderer.render(&mono_input, &position)?;Headphone Profiles
- Flat: Neutral response
- ClosedBack: Closed-back headphone coloration
- OpenBack: Open-back headphone coloration
- IEM: In-ear monitor characteristics
When to Use HRTF
✅ Headphone listening
✅ Full 3D immersive audio needed
✅ No speaker system available
✅ Mobile/personal devices
✅ Natural spatial cues required