Audiovorrichtung und Verfahren zur Erzeugung eines Stereosignals

Details

Veröffentlichungs-Nr.

EP4761293

Anmeldetag

12. Dezember 2024

Veröffentlichung

17. Juni 2026

Rechtsraum

EP

IPC

H04S1/00, // G10L19/008

Abstract

An audio apparatus comprises a downmixer (107) generating a mono downmix by downmixing a stereo signal resulting from applying downmix filters (103, 105) to an input stereo signal. Residual filters (109,113) generate compensation signals from the mono downmix and residual signals are generated by compensators (111, 115) compensating the input channel signals by the compensation signals. A renderer 117 renders the mono downmix and residual signals to generate an output stereo signal. The filter responses of the downmix filter (103, 105) and the residual filters (109,113) for a given channel have a fixed relationship, typically being complex conjugates in the frequency domain, and are updated by an adapter (119) to reduce error values determined from the residual signals. The error values may be energy or power level measures for the residual signals.

Anmelder

Firma

Koninklijke Philips N.V.

Land

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