Audio Pickup Circuit Switching Between Microphone Array and Wireless Transceiver
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Solution Overview
Problem
Current voice interaction techniques using remote audio pickup schemes, such as microphone arrays, face significant quality drops when the user is far away or in noisy environments, affecting voice output quality and user experience.
Innovation Solution
An audio pickup and play circuit system that includes a microphone array, a wireless audio transceiver, an audio processor, a controller, and switchers to dynamically switch between local and remote audio signals based on distance and volume thresholds, ensuring optimal signal processing and playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a microphone array is used for remote audio pickup, then the system can function in a quiet environment at distances of 3 to 5 meters, but the voice signal quality drops considerably when the user is far from the microphone array or in noisy environments
Solution Approach 1:
The system dynamically switches between microphone array mode and wireless microphone mode based on real-time detection of distance and noise levels. The controller adjusts the audio source selection dynamically, transitioning from fixed microphone array to portable wireless microphone when quality degradation is detected, thereby maintaining reliable voice signal quality across varying operational conditions.
2Device complexity
If the microphone array collects audio signals remotely, then the system structure remains simple, but the voice output quality deteriorates in noisy environments or at greater distances
Solution Approach 1:
A wireless microphone acts as an intermediary device between the user and the audio processing system. When the microphone array fails to capture quality audio, the wireless microphone serves as a backup audio source, transmitting signals directly to the processor via wireless communication, thus maintaining voice output quality without significantly increasing system complexity.
3Ease of operation
If only a microphone array is used for audio pickup, then the system is simple to operate, but speech recognition accuracy decreases when the user is far away or in noisy environments
Solution Approach 1:
The system changes the operational parameters by switching between two different audio source configurations: microphone array for close-range quiet environments and wireless microphone for far-range or noisy environments. This parameter change enables the system to maintain high speech recognition accuracy across different operating conditions while keeping the user interface simple.
Data Source
AI summary
The present disclosure relates to a circuit and system for audio pickup and play, and a method for switching audio pickup and play. The circuit includes a microphone array for collecting a first audio signal, a first wireless audio transceiver for receiving a second audio signal from a remote wireless microphone, an audio processor, a first audio player, a controller for outputting a first control signal and a second control signal, an audio input switcher for inputting the first audio signal or the second audio signal into the audio processor based on the first control signal. The audio processor is configured for processing the received first audio signal and second audio signal and outputting an audio play signal. The circuit includes an audio output switcher for outputting the audio play signal to the first audio player or the first wireless audio transceiver based on the second control signal.