Wireless Speaker Playback Delay Compensation for Complete Audio Output
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Solution Overview
Problem
Vehicle computing devices often fail to render initial portions of audio data transmitted by smartphones via vehicle speakers due to delays or being out of the appropriate mode, leading to incomplete audio output and wasteful retransmissions.
Innovation Solution
Determining the audio delay between a computing device and vehicle speakers, appending a delay audio segment to audio streams, and using noise reduction techniques to ensure complete audio rendering and efficient transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If audio data is transmitted to vehicle speakers via wireless channel, then audio output is provided to user, but initial portion of audio data fails to render due to delay
Solution Approach 1:
The system performs preliminary actions by detecting the audio delay between the computing device and vehicle speakers before transmitting audio data. Based on this detected delay, the system preemptively adjusts the audio transmission timing or inserts delay compensation segments to ensure the complete audio stream renders properly, preventing the initial portion from being lost.
2Reliability
If audio data is retransmitted to ensure completeness, then audio reliability is improved, but computational resources are wasted
Solution Approach 1:
The system implements feedback by monitoring whether audio data renders completely through the vehicle speakers. Based on this feedback and the detected audio delay characteristics, the system dynamically adjusts transmission strategies, inserting delay compensation only when needed rather than always retransmitting, thus improving reliability while minimizing unnecessary computational resource consumption.
3Measurement precision
If noise reduction is applied to captured audio data, then speech recognition accuracy is improved, but processing time increases
Solution Approach 1:
The system performs preliminary noise reduction processing on captured audio data before speech recognition. By detecting audio delay characteristics in advance, the system can preemptively apply appropriate noise reduction techniques to the expected audio stream, improving speech recognition accuracy without adding significant processing time during critical moments.
Data Source
AI summary
Implementations are directed to causing a computing device to transmit an audio data stream, via a communication channel, to a vehicle computing device of a vehicle. Various implementations include one or more vehicle speakers driven by the vehicle computing device to render audible output. Additionally or alternatively, various implementations include determining whether the audible output is captured by at least one microphone of a vehicle interface device within the vehicle. In many implementations, the vehicle interface device is communicatively coupled to the computing device.