Amphi

Technology

True to Life

Binaural Audio and Head-Related Transfer Functions (HRTFs)

Binaural audio replicates natural 3D hearing by using at least two audio channels, one for each ear
Head-Related Transfer Functions (HRTFs) are spectral fingerprints that capture how sound sources are modified by the head and ears
Binaural audio is synthesized through HRTF over 2-channel systems, enabling the perception of virtual 3D sound sources in any direction around the listener
This process delivers accurate sound localization and enhances depth perception between close and distant sounds

Cross-talk Cancellation (CTC)

Conventional stereo systems converge and flatten spatial cues
The perception of spatial audio over headphones is readily achieved due to the separation of left and right channels
CTC is processing that enables binaural reproduction through loudspeakers instead of headphones
Like a 'virtual headphone', CTC uses interference cancelling filters to ensure each ear receives only its intended audio signal
CTC signal separation unlocks HRTF encoding and the perception of spatial cues
Compared with headphone reproduction of binaural audio, CTC delivers greater externalization

Multi Channel Arrays

Uses three or more loudspeakers for improved 3D sound reproduction through speaker beamforming
Enhances the effectiveness of cross-talk cancellation by improving channel separation and reducing interfering sources
Increases loudness while reducing room reflections, improving overall sound quality
Scalable from slim notebooks, to soundbars, to multi-speaker display designs

Position-Adaptive 3D Sound

Overcomes the sweet-spot limitation of conventional cross-talk cancellation systems
Uses Machine Learning powered listener-position sensing to track the alignment of the listener's ears to the audio device
Dynamically adjusts audio processing to maintain optimal 3D sound as the listener moves
Provides a consistent, high-quality 3D audio experience regardless of listener position

Amphi on Headphones

3D sound technologies for headphones, headsets, earbuds, XR headsets, AR glasses

Amphi technology, specially engineered for personal listening with speakers, has been adapted for headphone devices to provide product makers with a Total Spatial Audio Solution.

Fixed Position

Technology
- Reproduces the spatial cues from a sound source to the ears at a fixed head position
Benefits
- Provides a 3D sound effect while minimizing computational overhead
- Compatible with any headphone
Use Cases
- Music listening
- Movie and video watching
Availability
- Product-ready

Position-Adaptive

Technology
- Uses head-tracking technology to adjust the rendering in real-time as the listener moves
Benefits
- Delivers a life-like, natural, and immersive listening experience
- Reduces “front-back confusion” and improves externalization
- Compatible with any headphone
Use Cases
- Gaming
- XR/AR experiences
Availability
- Coming soon in Q1 2026