Loading patent…
AssigneeFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
InventorsSascha DISCH, Markus MULTRUS, Benjamin SCHUBERT, Markus SCHNELL
Estimating the term…
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.
An audio decoder device for decoding a bitstream, the audio decoder device comprising:
The audio decoder device according to the preceding claim, wherein the frequency domain bandwidth extension signal is produced without spectral band replication.
The audio decoder device according to the preceding claim, wherein the noise generator is configured to produce the noise signal depending on the side information signal.
The audio decoder device according to the preceding claim, wherein the bandwidth extension module is configured in such way that the temporal shaping of the further noise signal is done in an overemphasized manner.
The audio decoder device according to the preceding claim, wherein a control parameter extractor is configured for extracting control parameters used by the core decoder module from the decoded audio signal and wherein the bandwidth extension module is configured to produce the frequency domain bandwidth extension signal depending on the control parameters.
A method for decoding a bitstream, the method comprising:
A non-transitory digital storage medium having a computer program stored thereon to perform the method according to the preceding claim when said computer program is run by a processor.
Dependencies are inferred from the claim text.