Patent ID: 7260520
Filing Date: 2007-08-21
Classification: G10L

Abstract:
1. Apparatus for producing a high-frequency reconstruction signal based on a bandwidth-limited audio signal, comprising: means for obtaining information, whether a to be processed passage of the bandwidth-limited audio signal has a pulse-train-like character or a non-pulse-train-like character, wherein a passage has a pulse-train-like character, when the passage includes a series of pulses having associated therewith a pulse period, and wherein a passage has a non-pulse-train-like character, when the passage does not include a series of pulses having associated therewith the pulse period; means for adaptively over time selecting different methods for high-frequency generation for passages to be processed based on the information; and means for performing a selected high-frequency generation method for a passage of the bandwidth-limited audio signal to obtain the high-frequency reconstruction signal.