November 4, 2010

Wide-area psychoacoustic correction for problematic room modes using non-linear bass synthesis

Small room acoustics are characterized by a limited number of dominant low-frequency room modes which result in wide spatio-pressure variations that traditional room-correction systems find elusive to correct over a broad listening area. A psychoacoustic-based methodology is proposed whereby signal components coincident only with problematic modes are filtered and substituted by virtual-bass components to forge an illusion of the suppressed frequencies. A scalable and hierarchical approach is studied using the Chameleon Subwoofer Array (CSA) and subjective evaluation confirms a uniform large-area performance. Bass synthesis exploits parallel nonlinear and phase vocoder generators with outputs blended as a function of transient and steady-state signal content.

November 4, 2010

Small room acoustics are characterized by a limited number of dominant low-frequency room modes which result in wide spatio-pressure variations that traditional room-correction systems find elusive to correct over a broad listening area. A psychoacoustic-based methodology is proposed whereby signal components coincident only with problematic modes are filtered and substituted by virtual-bass components to forge an illusion of the suppressed frequencies. A scalable and hierarchical approach is studied using the Chameleon Subwoofer Array (CSA) and subjective evaluation confirms a uniform large-area performance. Bass synthesis exploits parallel nonlinear and phase vocoder generators with outputs blended as a function of transient and steady-state signal content.

Circle Animation waves consumer electronics Waves Consumer Electronics MaxxAudio MaxxVoice Nx 3D Audio Spatial
Circle Animation waves consumer electronics Waves Consumer Electronics MaxxAudio MaxxVoice Nx 3D Audio Spatial