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Title
Vorrichtung und Verfahren zum Berechnen von Lautsprechersignalen für eine Mehrzahl von Lautsprechern unter Verwendung einer Verzögerung im Frequenzbereich
Date Issued
2012
Author(s)
Patent No
102012200512
Abstract
The invention relates to a device for calculating speaker signals for a plurality of speakers using a plurality of audio sources, wherein an audio source has an audio signal (10), said device comprising: a forward-transformation stage (100) for transforming each audio signal (10) in stages into a spectral range in order to obtain a plurality of temporally successive short-term spectra for each audio signal; a buffer (200) for storing a number of temporally successive short-term spectra for each audio signal; a buffer access control (600) for accessing a specific short-term spectrum from the plurality of short-term spectra for a combination of a speaker and an audio signal based on a delay value (701); a filter stage (300) for filtering the specific short-term spectrum for the combination of audio signal and speaker with a filter that is provided for the combination of audio signal and speaker such that a filtered short-term spectrum is obtained for each combination of one audio signal and one speaker; a summation stage (400) for adding up the filtered short-term spectra for a speaker in order to obtain the sum of short-term spectra for each speaker; and a back-transformation stage (800) for the back transformation of added short-term spectra in stages for the speaker in a time domain in order to obtain the speaker signals.
Language
de
Patenprio
DE 102012200512 A1: 20120113