View source for 20240029747. BACKWARD-COMPATIBLE INTEGRATION OF HIGH FREQUENCY RECONSTRUCTION TECHNIQUES FOR AUDIO SIGNALS simplified abstract (Dolby International AB)

=BACKWARD-COMPATIBLE INTEGRATION OF HIGH FREQUENCY RECONSTRUCTION TECHNIQUES FOR AUDIO SIGNALS=


==Organization Name==

[[:Category:Dolby International AB|Dolby International AB]]


[[Category:Dolby International AB]]

==Inventor(s)==

[[:Category:Kristofer Kjoerling of Solna (SE)|Kristofer Kjoerling of Solna (SE)]][[Category:Kristofer Kjoerling of Solna (SE)]]

[[:Category:Lars Villemoes of Järfälla (SE)|Lars Villemoes of Järfälla (SE)]][[Category:Lars Villemoes of Järfälla (SE)]]

[[:Category:Heiko Purnhagen of Sundbyberg (SE)|Heiko Purnhagen of Sundbyberg (SE)]][[Category:Heiko Purnhagen of Sundbyberg (SE)]]

[[:Category:Per Ekstrand of Saltsjöbaden (SE)|Per Ekstrand of Saltsjöbaden (SE)]][[Category:Per Ekstrand of Saltsjöbaden (SE)]]

==BACKWARD-COMPATIBLE INTEGRATION OF HIGH FREQUENCY RECONSTRUCTION TECHNIQUES FOR AUDIO SIGNALS - A simplified explanation of the abstract==


This abstract first appeared for US patent application 20240029747 titled 'BACKWARD-COMPATIBLE INTEGRATION OF HIGH FREQUENCY RECONSTRUCTION TECHNIQUES FOR AUDIO SIGNALS

==Simplified Explanation==

The patent application describes a method for decoding an encoded audio bitstream. Here is a simplified explanation of the abstract:

* The method starts by receiving the encoded audio bitstream.
* The audio data is then decoded to generate a decoded lowband audio signal.
* High frequency reconstruction metadata is extracted from the bitstream.
* The decoded lowband audio signal is filtered using an analysis filterbank to generate a filtered lowband audio signal.
* A flag indicating whether spectral translation or harmonic transposition should be performed on the audio data is extracted.
* A highband portion of the audio signal is regenerated using the filtered lowband audio signal and the high frequency reconstruction metadata, based on the flag.

Potential applications of this technology:

* Audio decoding and playback systems
* Audio compression and transmission systems
* Audio editing and post-production tools

Problems solved by this technology:

* Efficient decoding of encoded audio bitstreams
* Accurate reconstruction of high frequency audio signals
* Flexibility in performing spectral translation or harmonic transposition

Benefits of this technology:

* Improved audio quality and fidelity
* Enhanced control over audio signal processing
* Efficient use of bandwidth and storage space


==Original Abstract Submitted==

a method for decoding an encoded audio bitstream is disclosed. the method includes receiving the encoded audio bitstream and decoding the audio data to generate a decoded lowband audio signal. the method further includes extracting high frequency reconstruction metadata and filtering the decoded lowband audio signal with an analysis filterbank to generate a filtered lowband audio signal. the method also includes extracting a flag indicating whether either spectral translation or harmonic transposition is to be performed on the audio data and regenerating a highband portion of the audio signal using the filtered lowband audio signal and the high frequency reconstruction metadata in accordance with the flag.



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