Audio Signal Discontinuity Detection for Fade Smoothing
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Solution Overview
Problem
Existing audio reproduction devices experience deterioration in quality due to discontinuity points caused by data loss during transmission, particularly when silent periods occur in audio data, which are not adequately addressed by existing fade processing techniques.
Innovation Solution
An information processing device with a detection unit to identify discontinuous points and a control execution unit that performs predetermined control before and after these points, using fade-out, fade-in, and mute processing to smooth signal levels, thereby mitigating the impact of data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If audio data is transmitted through a communication channel, then audio data can be acquired from external devices, but data loss occurs during transmission causing discontinuous points
Solution Approach 1:
The system performs preliminary detection of discontinuous points in the audio data before reproduction. By detecting signal level discontinuities in advance and identifying their positions, the system can prepare appropriate processing (such as fade-in/fade-out) to mitigate the harsh effects of data loss, thus resolving the contradiction between maintaining data acquisition versatility and ensuring transmission reliability.
2Manufacturing precision
If fade processing is applied to audio data near discontinuous points, then reproduction quality at discontinuous points is improved, but existing techniques do not adequately handle silent periods caused by data loss
Solution Approach 1:
The system changes the parameters of fade processing by determining the positions of discontinuous points through signal level detection and setting appropriate fade-in/fade-out processing based on the detected discontinuous point positions. This adaptive parameter adjustment allows the system to effectively handle both audible and silent periods, resolving the contradiction between reproduction quality improvement and adaptability to different data loss scenarios.
3Productivity
If discontinuous points are present in audio data, then data transmission can occur, but harsh sound is output and reproduction quality deteriorates
Solution Approach 1:
The system converts the harmful effect of discontinuous points into a beneficial outcome by detecting the positions of discontinuities and applying targeted fade-in/fade-out processing. Instead of treating data loss as purely harmful, the system uses the detected discontinuous point positions to apply processing that reduces harsh sound, thus resolving the contradiction between maintaining transmission efficiency and ensuring reproduction quality.
Data Source
AI summary
Provided is an information processing device that includes a detection unit and a control execution unit. The detection unit detects discontinuous points where a signal level of an input signal is discontinuous. The control execution unit performs predetermined control on a loss section that is a section between a first discontinuous point and a second discontinuous point detected by the detection unit. The predetermined control has a control start position at a point in time before the first discontinuous point by a first period and a control end position at a point in time after the second discontinuous point by a second period.