Audio Device Synchronizing Multi-Speaker Output via Feedback
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Solution Overview
Problem
Current audio systems require multiple speakers connected by wires, leading to high costs, complex cable arrangements, and uneven audio outputs, making it difficult to achieve realistic stereophonic sound without expert installation and using additional speakers.
Innovation Solution
An audio device and method that adjusts and synchronizes multi-channel audio signals by using feedback loops to determine and compensate for output delays and volume differences between speakers, allowing for the combination of wired and wireless speakers to produce synchronized and balanced audio outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple speakers are connected by wire to achieve stereophonic sound, then audio quality is improved, but device complexity and installation cost increase
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless communication system. The audio device transmits audio data to multiple speakers wirelessly using communication protocols, eliminating the need for physical cable connections while maintaining audio quality and synchronization. This substitution resolves the contradiction by removing the complexity of cable arrangements while preserving the core functionality of multi-speaker stereophonic sound output.
2Manufacturing precision
If professional installation techniques are used to harmonize audio output, then audio quality is improved, but installation cost and time increase
Solution Approach 1:
The patent implements automatic synchronization and calibration mechanisms where the audio device automatically adjusts audio parameters for each speaker based on their individual characteristics. The system performs self-testing and self-adjustment of audio outputs without requiring professional installation techniques, thereby achieving harmonized audio quality while significantly reducing installation time and cost.
Solution Approach 2:
The patent incorporates feedback mechanisms where the audio device receives status information from each speaker and automatically adjusts audio parameters to ensure harmonized output. This closed-loop control system enables automatic calibration of audio outputs, eliminating the need for manual professional installation while maintaining high audio quality standards.
3Reliability
If wired speakers are used for stereophonic sound system, then audio synchronization is improved, but adaptability and ease of rearrangement deteriorate
Solution Approach 1:
The patent replaces wired connections with wireless communication, enabling speakers to be freely positioned and rearranged without being constrained by cable lengths or connection points. The wireless system maintains audio synchronization through digital timing protocols and automatic calibration, thereby achieving both reliable synchronization and high adaptability for speaker rearrangement.
4Manufacturing precision
If multiple speakers are used to produce stereophonic sound, then audio quality is improved, but system cost increases
Solution Approach 1:
The patent enables existing wireless speakers to be repurposed for stereophonic sound applications through software-based audio processing and synchronization. Instead of requiring dedicated expensive stereophonic speaker systems, the invention makes ordinary wireless speakers multi-functional by adding stereophonic capabilities through wireless communication and automatic calibration, thereby achieving high audio quality without increasing the number of speakers or system cost.
Data Source
AI summary
The audio device according to the present disclosure may include a mixer that adjusts the number of channels of an inputted audio signal based on the number of speakers connected, a transmitter that transmits a test audio signal for speaker setup, to at least one speaker among the plurality of speakers, a feedback receiver that receives a signal of the outputted audio, a controller that determines an output time difference between the plurality of speakers, based on the signal of the outputted audio, and a post-processor that adds an output delay signal to the audio signal of at least one channel of a multi-channel audio signal provided to the plurality of speakers so as to synchronize the outputs of the plurality of speakers, based on the determined output time difference.