DOLBY INTERNATIONAL AB (20240249739). CROSS PRODUCT ENHANCED HARMONIC TRANSPOSITION simplified abstract
CROSS PRODUCT ENHANCED HARMONIC TRANSPOSITION
Organization Name
Inventor(s)
Lars Villemoes of Jarfalla (SE)
CROSS PRODUCT ENHANCED HARMONIC TRANSPOSITION - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240249739 titled 'CROSS PRODUCT ENHANCED HARMONIC TRANSPOSITION
The present invention involves audio coding systems utilizing a harmonic transposition method for high frequency reconstruction (HFR). It describes a system and method for generating a high frequency component of a signal from a low frequency component.
- Analysis filter bank provides multiple analysis subband signals of the low frequency component.
- Non-linear processing unit modifies the phase of two analysis subband signals to generate a synthesis subband signal.
- Synthesis filter bank generates the high frequency component of the signal from the synthesis subband signal.
Potential Applications: - High-quality audio encoding and decoding systems - Music production and editing software - Telecommunication systems for improved audio transmission
Problems Solved: - Enhancing the quality of high frequency audio components - Efficient reconstruction of high frequency signals from low frequency components
Benefits: - Improved audio fidelity and clarity - Enhanced user experience in audio applications - Efficient data compression for audio files
Commercial Applications: Title: Advanced Audio Coding Systems for High-Frequency Reconstruction This technology can be used in: - Audio streaming services - Digital audio workstations - Mobile devices for audio playback
Prior Art: Researchers can explore prior patents related to audio coding systems and harmonic transposition methods for further insights into this technology.
Frequently Updated Research: Stay updated on advancements in audio coding systems, signal processing, and high frequency reconstruction techniques for potential improvements in this field.
Questions about the technology: 1. How does the harmonic transposition method improve high frequency reconstruction in audio coding systems? 2. What are the key differences between traditional audio encoding methods and the system described in this patent application?
Original Abstract Submitted
the present invention relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (hfr). a system and a method for generating a high frequency component of a signal from a low frequency component of the signal is described. the system comprises an analysis filter bank providing a plurality of analysis subband signals of the low frequency component of the signal. it also comprises a non-linear processing unit to generate a synthesis subband signal with a synthesis frequency by modifying the phase of a first and a second of the plurality of analysis subband signals and by combining the phase-modified analysis subband signals. finally, it comprises a synthesis filter bank for generating the high frequency component of the signal from the synthesis subband signal.
