Signal Processing Device for Audio Transfer with Additional Information
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Solution Overview
Problem
Existing audio equipment often improperly reproduces audio signals with additional information due to inadequate transfer methods, leading to issues in compatibility and sound quality across different devices.
Innovation Solution
A signal processing device that selects from multiple methods to generate and transfer audio signals with additional information, using techniques like amplitude modulation, bit expansion, and sampling frequency expansion to ensure proper reproduction across various audio equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio equipment transfers audio signals with additional information using conventional methods, then the transfer process is simple, but the reproduction quality deteriorates and compatibility is reduced
Solution Approach 1:
The patent implements dynamic selection of transfer methods based on the processing capacity of the reproduction device. The system adapts the transfer approach in real-time: using simple methods for basic devices and sophisticated methods (amplitude modulation, bit expansion, sampling frequency expansion) for advanced devices, thereby resolving the contradiction between reproduction quality and method complexity
Solution Approach 2:
The patent changes key parameters of the audio signal including amplitude, bit depth, and sampling frequency to embed additional information. By modulating these parameters, the system can transfer extra data (such as channel information, metadata) alongside the audio signal, improving reproduction quality without requiring a completely new transfer framework
2Adaptability or versatility
If multiple transfer methods are implemented to ensure proper reproduction, then reproduction quality improves, but device complexity increases
Solution Approach 1:
The patent creates a universal transfer framework that can handle multiple transfer methods within a single system. The signal processing device is designed to perform amplitude modulation, bit expansion, and sampling frequency expansion using a unified architecture, enabling compatibility across diverse reproduction devices without requiring separate processing systems for each method
Solution Approach 2:
The patent introduces an intermediary processing layer that mediates between the audio source and reproduction device. This intermediary selectively applies different transfer methods based on device capabilities, acting as a bridge that translates audio signals into formats suitable for various devices while maintaining a single, manageable system complexity
3Loss of information
If additional information is added to audio signals, then information content increases, but the likelihood of improper reproduction increases
Solution Approach 1:
The patent performs preliminary assessment of the reproduction device's processing capacity before selecting the transfer method. By evaluating device capabilities in advance, the system pre-selects the appropriate transfer approach, ensuring that additional information is encoded in a manner that the specific device can reliably decode and reproduce
Solution Approach 2:
The patent implements a feedback mechanism where the system monitors the reproduction outcome and adjusts the transfer method selection accordingly. By incorporating feedback about device performance and reproduction quality, the system continuously optimizes the balance between information content and reproduction reliability
Data Source
AI summary
A signal processing device includes a selector configured to select one of a plurality of methods, in accordance with which a signal generation process is performed for generating a transfer signal in which additional information is added to an audio signal; a signal processor configured to execute the signal generation process of adding the additional information to the audio signal in accordance with the method selected by the selector; and a transferrer configured to transfer to a reproduction device the transfer signal generated by the signal processor.