DOLBY INTERNATIONAL AB (20240282315). PROCESSING OF AUDIO SIGNALS DURING HIGH FREQUENCY RECONSTRUCTION simplified abstract
Contents
PROCESSING OF AUDIO SIGNALS DURING HIGH FREQUENCY RECONSTRUCTION
Organization Name
Inventor(s)
Kristofer Kjoerling of Solna (SE)
PROCESSING OF AUDIO SIGNALS DURING HIGH FREQUENCY RECONSTRUCTION - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240282315 titled 'PROCESSING OF AUDIO SIGNALS DURING HIGH FREQUENCY RECONSTRUCTION
The patent application pertains to the high frequency reconstruction/regeneration (HFR) of audio signals, specifically focusing on a method and system for performing HFR of audio signals with significant energy level variations across the low frequency range to reconstruct the high frequencies of the audio signal.
- System generates high frequency subband signals from low frequency subband signals and spectral gain coefficients.
- System adjusts energy of high frequency subband signals using target energies covering different intervals within the high frequency range.
- Target energies indicate desired energy levels for high frequency subband signals lying within specific intervals.
Potential Applications: - Audio signal processing in music production - Enhancing sound quality in audio systems - Noise reduction in communication devices
Problems Solved: - Addressing energy level variations in audio signals - Improving high frequency reconstruction accuracy - Enhancing overall audio signal quality
Benefits: - Improved audio signal clarity - Enhanced sound reproduction fidelity - Reduction of distortion in audio playback
Commercial Applications: Title: "Advanced Audio Signal Processing System for High Fidelity Sound Reproduction" This technology can be utilized in high-end audio equipment, professional recording studios, and communication devices to enhance audio quality and user experience.
Prior Art: Readers can explore prior research on audio signal processing, high frequency reconstruction, and spectral gain coefficient optimization in audio engineering literature and patents.
Frequently Updated Research: Stay updated on advancements in audio signal processing algorithms, high frequency reconstruction techniques, and energy level optimization in audio systems.
Questions about High Frequency Reconstruction of Audio Signals: 1. How does the system adjust the energy of high frequency subband signals based on target energies? 2. What are the key challenges in accurately reconstructing high frequencies in audio signals with large energy level variations?
Original Abstract Submitted
the application relates to hfr (high frequency reconstruction/regeneration) of audio signals. in particular, the application relates to a method and system for performing hfr of audio signals having large variations in energy level across the low frequency range which is used to reconstruct the high frequencies of the audio signal. a system configured to generate a plurality of high frequency subband signals covering a high frequency interval from a plurality of low frequency subband signals is described. the system comprises means for receiving the plurality of low frequency subband signals; means for receiving a set of target energies, each target energy covering a different target interval within the high frequency interval and being indicative of the desired energy of one or more high frequency subband signals lying within the target interval; means for generating the plurality of high frequency subband signals from the plurality of low frequency subband signals and from a plurality of spectral gain coefficients associated with the plurality of low frequency subband signals, respectively; and means for adjusting the energy of the plurality of high frequency subband signals using the set of target energies.
