Audio Data Processing Device for Seamless Sound Field Switching
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Solution Overview
Problem
Existing audio data processing systems face challenges in smoothly switching sound field effects without causing noise, often requiring muting processes that disrupt the audio experience.
Innovation Solution
An audio data processing device and method that analyze the scene and gradually adjust the gain and parameters of sound field effect data to seamlessly transition between sound field effects, using a sound field effect data generator, processor, and memory device to perform arithmetic operations and control the output gains, thereby suppressing noise during scene switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If muting processing is performed for a fixed period to prevent noise during sound field effect switching, then noise occurrence is suppressed, but audio continuity is disrupted and audio quality deteriorates
Solution Approach 1:
The patent changes the parameter from binary mute/unmute states to continuous gain adjustment. By gradually decreasing the gain of the first sound field effect data and gradually increasing the gain of the second sound field effect data during switching, the system achieves smooth transitions without abrupt muting, thereby suppressing noise while maintaining audio continuity.
Solution Approach 2:
The patent introduces dynamic gain adjustment during sound field effect switching. Instead of static muting periods, the system dynamically modifies the gain parameters of both incoming and outgoing sound field effect data over time, creating a seamless transition that prevents noise while preserving audio flow.
2Speed
If sound field effect data is switched abruptly to change sound field effects, then switching speed is improved, but noise and discontinuities occur in audio output
Solution Approach 1:
The patent applies parameter change by adjusting the gain of sound field effect data during switching. By gradually decreasing the gain of the outgoing sound field effect and gradually increasing the gain of the incoming sound field effect, the system achieves smooth transitions that eliminate noise and discontinuities while maintaining efficient switching.
Solution Approach 2:
The patent uses gain adjustment as an intermediary mechanism during sound field effect switching. The gradual gain transition acts as a mediator between the outgoing and incoming sound field effects, smoothing the transition and preventing direct abrupt switching that would cause noise and discontinuities.
3Duration of action of stationary object
If gain adjustment processing is performed during sound field effect switching, then audio continuity is maintained, but processing complexity increases
Solution Approach 1:
The patent manages processing complexity by focusing parameter changes on a single critical attribute: gain. By adjusting only the gain parameter during sound field effect switching rather than multiple parameters simultaneously, the system maintains audio continuity while keeping processing complexity manageable.
Data Source
AI summary
An audio data processing device according to an aspect of the present disclosure includes: a sound field effect data generator configured to add sound field effect data to audio data by arithmetic operation processing using a parameter, at least one processor, and at least one memory device that stores a plurality of instructions, which when executed by the at least one processor, causes the at least one processor to operate to: analyze a scene for the audio data, recognize switching of the scene based on an analysis result of the scene, gradually decrease both an input gain and an output gain of the sound field effect data generator, and gradually increase both the input gain and the output gain after changing the parameter.