Patent №
US 8,296,159
Granted
2012-10-23
Filed 2011
Owner
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Lab
—
AI components
1
speech
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
13004255
An apparatus calculates a number of spectral envelopes to be derived by a spectral band replication (SBR) encoder, wherein the SBR encoder is adapted to encode an audio signal using a plurality of sample values within a predetermined number of subsequent time portions in an SBR frame extending from an initial time to a final time, the predetermined number of subsequent time portions being arranged in a time sequence given by the audio signal. The apparatus has a decision value calculator for determining a decision value, the decision value measuring a deviation in spectral energy distributions of a pair of neighboring time portions. The apparatus further has a detector for detecting a violation of a threshold by the decision value and a processor for determining a first envelope border between the pair of neighboring time portions when the violation of the threshold is detected.
AI classification
Ownership
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
assignment · 261960440
Assignors
NEUENDORF, MAX, GRILL, BERNHARD, KRAEMER, ULRICH, MULTRUS, MARKUS, POPP, HARALD, RETTELBACH, NIKOLAUS, NAGEL, FREDERIK, LOHWASSER, MARKUS, GAYER, MARC, JANDER, MANUEL, BACIGALUPO, VIRGILIO
On an employer assignment, the assignors are typically the inventors.