AUDIO BANDWIDTH EXTENSION BY INSERTION OF TEMPORAL PRE-SHAPED NOISE IN FREQUENCY DOMAIN
摘要
An audio decoder device for decoding a bitstream includes a bitstream receiver configured to receive the bitstream and to derive an encoded audio signal from the bitstream; a core decoder module configured for deriving a decoded audio signal in a time domain from the encoded audio signal; a temporal envelope generator configured to determine a temporal envelope of the decoded audio signal; a bandwidth extension module configured to produce a frequency domain bandwidth extension signal; a time-to-frequency converter configured to transform the decoded audio signal into a frequency domain decoded audio signal; a combiner configured to combine the frequency domain decoded audio signal and the frequency domain bandwidth extension signal in order to produce a bandwidth extended frequency domain audio signal; and a frequency-to-time converter configured to transform the bandwidth extended frequency domain audio signal into a bandwidth-extended time domain audio signal.
申请公布号
EP3063761(A1)
申请公布日期
2016.09.07
申请号
EP20140792794
申请日期
2014.10.30
申请人
FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人
DISCH, SASCHA;MULTRUS, MARKUS;SCHUBERT, BENJAMIN;SCHNELL, MARKUS