Patent ID: 6750789
Filing Date: 2004-06-15
Classification: G10L

Abstract:
A device for determining a coding block raster on which a decoded signal is based, in which the decoded signal is produced from an original signal by coding and decoding according to a coding algorithm including a coding block generating step, a conversion step and a data reducing step, said coding block generating step of the coding algorithm including partitioning the original signal according to the coding block raster into coding blocks with a specific number of time-discrete signal values, said conversion step including generating from a coding block a spectral representation of the same, and said data reducing step including removing information from the spectral representation of the original signal, said device comprising:a picker for picking out a segment of the decoded signal, said segment beginning at an output sampling value of the decoded signal; a processor for performing the conversion step on said segment of the decoded signal so as to provide a spectral representation of said segment; an evaluator for evaluating the spectral representation of said segment with respect to a predetermined criterion in order to obtain an evaluation result for the segment, said device for determining a coding block raster being further arranged to pick out, convert and evaluate a plurality of segments of the decoded signal that begin at different output sampling values in order to obtain a plurality of evaluation results; and a searcher for searching the evaluation results and for outputting an identification for the coding block raster underlying the decoded signal, on the basis of the segment that has an extreme evaluation result with respect to other evaluation results.