DOLBY INTERNATIONAL AB (20240212695). BACKWARD-COMPATIBLE INTEGRATION OF HIGH FREQUENCY RECONSTRUCTION TECHNIQUES FOR AUDIO SIGNALS simplified abstract
Contents
BACKWARD-COMPATIBLE INTEGRATION OF HIGH FREQUENCY RECONSTRUCTION TECHNIQUES FOR AUDIO SIGNALS
Organization Name
Inventor(s)
Kristofer Kjoerling of Solna (SE)
Lars Villemoes of Järfälla (SE)
Heiko Purnhagen of Sundbyberg (SE)
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 20240212695 titled 'BACKWARD-COMPATIBLE INTEGRATION OF HIGH FREQUENCY RECONSTRUCTION TECHNIQUES FOR AUDIO SIGNALS
The abstract describes a method for decoding an encoded audio bitstream, which involves generating a decoded lowband audio signal, extracting high frequency reconstruction metadata, filtering the decoded signal, and regenerating a highband portion of the audio signal based on the filtered lowband audio signal and metadata.
- Receiving an encoded audio bitstream
- Decoding the audio data to generate a decoded lowband audio signal
- Extracting high frequency reconstruction metadata
- Filtering the decoded lowband audio signal with an analysis filterbank
- Extracting a flag indicating whether spectral translation or harmonic transposition is to be performed
- Regenerating a highband portion of the audio signal using the filtered lowband audio signal and the high frequency reconstruction metadata
Potential Applications: - Audio decoding technology for various devices and platforms - Enhancing audio quality in streaming services - Improving sound reproduction in multimedia applications
Problems Solved: - Efficient decoding of encoded audio bitstreams - Accurate reconstruction of high frequency audio signals - Seamless integration of spectral translation and harmonic transposition techniques
Benefits: - Enhanced audio quality and fidelity - Improved user experience in audio playback - Versatile application in a wide range of audio processing systems
Commercial Applications: Title: Advanced Audio Decoding Technology for Enhanced Sound Quality This technology can be used in: - Streaming services - Audio editing software - Multimedia devices and applications
Questions about Audio Decoding Technology: 1. How does this method improve the decoding process of audio bitstreams? - This method enhances the accuracy and efficiency of decoding by utilizing high frequency reconstruction metadata and advanced filtering techniques. 2. What are the potential benefits of integrating spectral translation and harmonic transposition in audio decoding? - Integrating these techniques allows for flexible manipulation of audio signals, leading to improved sound quality and user experience.
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.
