Two-Channel Systems TRIZ Cases

Acoustic dipole signal inversion mitigates crosstalk between loudspeakers, expanding the listener sweet spot without complex head-related transfer functions.

A mobile device measures binaural room impulse responses using its built-in loudspeaker and microphone to personalize audio playback.

Decomposes BRIR filters into delay and spectral modules, reducing computational costs while preserving externalization.

Sum-difference conversion isolates the difference channel for HRTF processing, widening the stereo image beyond physical speaker constraints.

Segmenting audio into in-phase and anti-phase components allows selective crosstalk cancellation that preserves center-localized sound quality.

Audio signal processing apparatus reduces memory requirements by extending two-dimensional transfer functions to three dimensions via interpolation.

Forms virtual sound sources using head related transfer functions and cancels crosstalk to widen the stereo sound stage beyond physical speaker limits.

Remote HRTF processing generates personalized 3D audio streams, enabling high-fidelity sound on devices lacking local hardware accelerators.

Decomposing HRTF transfer functions into independent components eliminates lengthy anechoic chamber measurements.

De-correlating audio signals between ears restores binaural cues, resolving the loss of spaciousness in hearing aids.

Video capture extracts user anatomy to generate personalized head related transfer functions, resolving spatial perception limits in personal audio devices.

A filter generation apparatus synchronizes left and right transfer characteristics using direct sound arrival time detection.

An audio decoder applies head shadowing and phase shift filters to direct and cross-feed signal paths for headphone listening.

An audio signal processing apparatus detects stereo versus binaural signals using an indicator signal to apply widening only to stereo inputs.

Audio processing apparatus synthesizes head-related transfer characteristics to generate spatially spread virtual sound sources.

A sound signal processing apparatus converts interaural time differences into level differences to enhance directional cues.

A signal processing device generates binaural beats by mixing ambient sounds with converted sample signals.

Applies distance-based correction gains to decomposed signal components, resolving sound stage degradation from incorrect loudspeaker placement.

A structural head-related impulse response model generates binaural audio cues using spherical and pinna components.

Media player system calculates cumulative audio dose to generate safe playlists, preventing hearing impairment from excessive sound pressure levels.

A parametric audio renderer generates spatialized content using dynamic filters and delay configurations.

A binaural hearing system reproduces synthetically generated signals with a defined time delay between devices to create a sound amplification effect.

A method determines individual HRTFs by modifying approximate transfer functions using measured deviations to create personalized spatial audio profiles.

A microphone array envelops the head while a sound source sits in the ear canal to capture acoustic transfer functions.

Audio processor synthesizes spatially extended sound sources using cue information items, reducing computational complexity while preserving timbre.

Splitting frequency-domain HRTF signals into sub-bands and deriving statistical parameters reduces computational complexity and data storage requirements.

A sound image localization apparatus uses pre-computed head-related transfer function ratios to drive front speakers.

A surround component generation device updates multiplier coefficients to create spatial audio signals from two-channel inputs.

A hearing aid fitting system uses head-related transfer functions to generate three-dimensional sound fields for direct device testing.

Audio processing applies relative delay to synchronize stereo channels and correct temporal disparities between input signals.

A rendering apparatus maps audio objects to loudspeaker feed signals using position metadata and speaker zone constraints.

Compensated audio signals use delay and equalization circuits to maintain spectral energy levels across listening positions.

A signal processing apparatus scales audio channels using a computed signal-to-downmix ratio to preserve direct sound localization.

A system generates HRTF datasets by interpolating and combining multiple source recordings to expand spatial coverage.

A mobile audio processing method separates signals into frontal and surrounding components to apply selective crosstalk cancellation.

Surface integral sampling synthesizes 3D sound fields with finite loudspeakers, resolving spatial aliasing and localization artifacts.

Ipsilateral and contralateral filters offset spatial distortion from front speakers, restoring lateral sound localization accuracy.

A back-to-back speaker arrangement directs reverse phase sound to interact with normal phase output from adjacent units.

Perpendicular transducer arrangement creates wide stereo depth in compact enclosures without increasing device footprint.

Correction unit convolves acoustic signals with transfer functions to shift sound images, allowing listeners to detect information sounds without music masking.