Apparatus for mixing a plurality of input data streams

US8290783B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Markus Schnell · Nuremberg, DE
• Manfred Lutzky · Nuremberg, DE
• Markus Multrus · Nuremberg, DE

Key dates

• Filing date: Mar 4, 2009
• Grant date: Oct 16, 2012
• Expiry date: Jul 11, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G10L19/265
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An apparatus according to an embodiment of the present invention for mixing a first frame of a first input data stream and a second frame of a second input data stream has a processing unit adapted to generate an output frame, wherein the output frame has output spectral data describing a lower part of an output spectrum up to an output cross-over frequency, and wherein the output frame further has output SBR-data describing a higher part of the output spectrum above the output cross-over frequency by way of energy-related values in an output time/frequency grid resolution. The processing unit is further adapted such that the output spectral data corresponding to frequencies below a minimum value of cross-over frequencies of the first frame, the second frame and the output cross-over frequency is generated in a spectral domain and the output SBR-data corresponding to frequencies above a maximum value of cross-over frequencies of the first and second frames and the output cross-over frequency is processed in a SBR-domain.