Recognition delays are usually caused by three factors:
- Model loading phase: Large models (e.g., 300MB French models) take longer to download and unpack
- hardware performance: WebAssembly calculations may be slower on lower-end devices.
- Audio Buffer Settings: createTransferer's buffer size (default 128*150) affects the response speed
Optimization solutions::
- Loading strategy:
- Preloading models with Service Worker
- Selection of small models (e.g. vosk-model-small-en-us-0.15) - Parameter tuning:
- Reduced sample rate to 16000Hz (requires synchronization of model.conf)
- Reduce transmission buffer to 64*150 - Runtime optimization:
- Enable WebGL acceleration (requires changes to mfcc.conf)
- Turn off unnecessary result event listeners
Tests show that the optimized English recognition delay can be reduced from 1.2s to about 400ms
This answer comes from the articleVosk-Browser: Speech Recognition Tool Running in a BrowserThe
May not be reproduced without permission:AI productivity tools " Why is there a delay in recognizing results in vosk-browser? How to optimize it?
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