Patent ID: 11887609
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An apparatus for estimating an inter-channel time difference between a first channel signal and a second channel signal, comprising:
a calculator configured for calculating a cross-correlation spectrum for a time block from the first channel signal in the time block and the second channel signal in the time block;
a spectral characteristic estimator configured for estimating a spectral characteristic of a spectrum of the first channel signal for the time block or the second channel signal for the time block;
a smoothing filter configured for smoothing the cross-correlation spectrum over time using the spectral characteristic to acquire a smoothed cross-correlation spectrum; and
a processor configured for processing the smoothed cross-correlation spectrum to acquire the inter-channel time difference.