Audio Communication System Signal Defect Detection
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Solution Overview
Problem
In mobile communication systems, determining the cause of voice signal interruptions at the reception terminal is challenging, as existing systems require modifications to the mobile communication terminal to measure ambient field strength and battery capacity, and it is difficult to distinguish between user non-utterance and signal defects.
Innovation Solution
An audio communication system that superimposes an addition sound with a volume level determined by the voice acquisition unit onto the input voice and transmits a synthesis sound to the reception terminal, allowing users to detect signal defects without modifying the reception terminal, and includes features for communication quality detection, retransmission requests, and controlled signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reception terminal is modified to measure ambient field strength and battery capacity to detect communication defects, then the ability to detect signal defects is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent introduces an addition sound as an intermediary element that carries defect detection information. Instead of modifying the reception terminal to directly measure signal quality, the transmission terminal embeds defect information in an addition sound that is superimposed on the voice signal. The reception terminal simply plays back this addition sound, and the user can detect communication defects through the audio output without any complex measurement devices.
Solution Approach 2:
The patent replaces the mechanical/electrical measurement system (field strength meters, battery capacity sensors) with an acoustic information carrier. The defect detection function is transformed from a physical measurement task to an acoustic signal processing task, where defect information is encoded in the addition sound's presence or absence rather than requiring direct electrical measurements at the reception end.
2Measurement precision
If the addition sound volume level is increased to ensure detectability of signal defects, then the detection capability is improved, but the conversation quality deteriorates due to interference
Solution Approach 1:
The patent dynamically adjusts the volume level parameter of the addition sound based on communication conditions. The volume is set to be detectable by the user for defect identification while remaining below the threshold that would interfere with normal conversation. This parameter optimization allows the addition sound to serve its detection function without becoming a harmful interference.
Solution Approach 2:
The addition sound is designed with localized characteristics - it has specific frequency components and volume levels that are optimized for human detection of its presence/absence rather than for general audio quality. The sound's properties are tailored locally to achieve defect detection while minimizing interference with the primary voice communication function.
Data Source
AI summary
An audio communication system includes a generation unit that superimposes an addition sound having a volume level determined on the basis of a voice acquired by a voice acquisition unit on an input voice acquired by the voice acquisition unit of a transmission terminal and generates a synthesis sound and a transmission unit that transmits a signal of the synthesis sound generated by the generation unit to a reception terminal.