Erzeugung eines Stereokanalaudiosignals und eines Stereokanalaudiosignals Darstellenden Audiodatensignals

Details

Veröffentlichungs-Nr.

EP4819132

Anmeldetag

3. April 2025

Veröffentlichung

7. Oktober 2026

Rechtsraum

EP

IPC

G10L19/008

Abstract

A decoder audio apparatus comprises a receiver (101) receiving an audio data signal comprising a downmix audio signal for a stereo signal as well as spatial parameter sets wherein a second set comprises parameters with a lower frequency resolution and a higher time resolution than parameters for a first set. A decorrelator (103) decorrelates the mono downmix to generate a decorrelated signal and a transformation circuit (105) generates a first stereo signal from the mono downmix signal and the decorrelated signal using the parameters of the first set of spatial parameters. A signal generator (107) generates an output audio stereo signal from the first stereo signal with the generation depending on parameters of the second set of spatial parameters. The signal generator (107) may perform a second transformation/upmixing using coefficients determined from parameters of the second set. The approach may provide improved temporal accuracy for fast signal components with little increase in the data rate.

Anmelder

Firma

Koninklijke Philips N.V.

Land

🇳🇱 Niederlande

Fachgebiete