TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (20240274135). METHOD AND APPARATUS FOR CONTROLLING MULTICHANNEL AUDIO FRAME LOSS CONCEALMENT simplified abstract
Contents
METHOD AND APPARATUS FOR CONTROLLING MULTICHANNEL AUDIO FRAME LOSS CONCEALMENT
Organization Name
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor(s)
Erik Norvell of Upplands Väsby (SE)
Chamran Moradi Ashour of Stockholm (SE)
METHOD AND APPARATUS FOR CONTROLLING MULTICHANNEL AUDIO FRAME LOSS CONCEALMENT - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240274135 titled 'METHOD AND APPARATUS FOR CONTROLLING MULTICHANNEL AUDIO FRAME LOSS CONCEALMENT
Abstract: A method of approximating a lost or corrupted multichannel audio frame of a multichannel audio signal in a decoding device is provided. The device may generate a down-mix error concealment frame and transform the frame into a frequency domain to generate a transformed down-mix error concealment frame. The device may decorrelate the transformed frame to generate a decorrelated concealment frame. The device may obtain a residual signal spectrum of a stored residual signal of a previously received multichannel audio signal frame and generate an energy adjusted decorrelated residual signal concealment frame using the residual signal spectrum. The device may obtain a set of multi-channel audio substitution parameters and provide the frames and substitution parameters to an audio synthesis component to generate a synthesized multichannel audio frame. The device performs an inverse frequency domain transformation of the audio frame to generate a substitution frame for the lost or corrupted audio frame.
- Simplified Explanation:
- The method helps approximate lost or corrupted audio frames in a multichannel audio signal. - It involves generating error concealment frames, transforming them into the frequency domain, and decorrelating them. - Residual signal spectra are used to generate energy-adjusted decorrelated frames, and audio substitution parameters are applied to synthesize a new audio frame.
Key Features and Innovation: - Generation of error concealment frames. - Transformation into the frequency domain. - Decorrelation of frames. - Utilization of residual signal spectra. - Synthesis of new audio frames using substitution parameters.
Potential Applications: - Audio signal processing. - Multimedia applications. - Telecommunications. - Broadcasting.
Problems Solved: - Addressing lost or corrupted audio frames in multichannel signals. - Improving audio quality in decoding devices.
Benefits: - Enhanced audio signal reconstruction. - Improved user experience with minimal signal loss. - Efficient error concealment techniques.
Commercial Applications: - "Multichannel Audio Error Concealment Method for Decoding Devices": Potential for integration into audio decoding software for improved error handling and signal reconstruction in multimedia devices.
Prior Art: - Research on error concealment methods in audio signal processing. - Studies on multichannel audio reconstruction techniques.
Frequently Updated Research: - Ongoing advancements in error concealment algorithms for audio signals. - Research on improving multichannel audio synthesis techniques.
Questions about Multichannel Audio Error Concealment Method: 1. How does the method handle decorrelation of error concealment frames? 2. What are the key benefits of using residual signal spectra in generating concealment frames?
Original Abstract Submitted
a method of approximating a lost or corrupted multichannel audio frame of a multichannel audio signal in a decoding device is provided. the device may generate a down-mix error concealment frame and transform the frame into a frequency domain to generate a transformed down-mix error concealment frame. the device may decorrelate the transformed frame to generate a decorrelated concealment frame. the device may obtain a residual signal spectrum of a stored residual signal of a previously received multichannel audio signal frame and generate an energy adjusted decorrelated residual signal concealment frame using the residual signal spectrum. the device may obtain a set of multi-channel audio substitution parameters and provide the frames and substitution parameters to an audio synthesis component to generate a synthesized multichannel audio frame. the device performs an inverse frequency domain transformation of the audio frame to generate a substitution frame for the lost or corrupted audio frame.
