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Silero-VAD

Audio Classification
PyTorch
real_time
android
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Silero-VAD: Optimized for Qualcomm Devices

Silero VAD is a compact, production-ready Voice Activity Detection model trained on a large multilingual corpus. It processes 32 ms audio chunks at 16 kHz and outputs a speech probability per chunk, enabling real-time detection of speech segments in streaming or file-based audio. The model uses an LSTM-based architecture and is well-suited for edge deployment on Qualcomm Snapdragon devices.

This is based on the implementation of Silero-VAD found here. This repository contains pre-exported model files optimized for Qualcomm® devices. You can use the Qualcomm® AI Hub Models library to export with custom configurations. More details on model performance across various devices, can be found here.

Qualcomm AI Hub Models uses Qualcomm AI Hub Workbench to compile, profile, and evaluate this model. Sign up to run these models on a hosted Qualcomm® device.

Getting Started

There are two ways to deploy this model on your device:

Option 1: Download Pre-Exported Models

Below are pre-exported model assets ready for deployment.

Runtime Precision Chipset SDK Versions Download
ONNX float Universal QAIRT 2.50, ONNX Runtime 1.30.0 Download
ONNX w8a16_mixed_int16 Universal QAIRT 2.50, ONNX Runtime 1.30.0 Download
QNN_DLC float Universal QAIRT 2.50 Download
QNN_DLC w8a16_mixed_int16 Universal QAIRT 2.50 Download
TFLITE float Universal QAIRT 2.50 Download

For more device-specific assets and performance metrics, visit Silero-VAD on Qualcomm® AI Hub.

Option 2: Export with Custom Configurations

Use the Qualcomm® AI Hub Models Python library to compile and export the model with your own:

  • Custom weights (e.g., fine-tuned checkpoints)
  • Custom input shapes
  • Target device and runtime configurations

This option is ideal if you need to customize the model beyond the default configuration provided here.

See our repository for Silero-VAD on GitHub for usage instructions.

Model Details

Model Type: Model_use_case.voice_activity_detection

Model Stats:

  • Input resolution: 512 samples (32 ms at 16 kHz)
  • Model size (float): 2.27 MB
  • Number of parameters: 0.24M
  • Supported sample rates: 16000 Hz

Performance Summary

Model Runtime Precision Chipset Inference Time (ms) Peak Memory Range (MB) Primary Compute Unit
Silero-VAD ONNX float Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 0.069 ms 0 - 24 MB NPU
Silero-VAD ONNX float Snapdragon® 8 Elite For Galaxy Mobile 0.07 ms 0 - 24 MB NPU
Silero-VAD ONNX float Snapdragon® X2 Elite 0.063 ms 1 - 1 MB NPU
Silero-VAD ONNX float Snapdragon® X Elite 0.072 ms 0 - 0 MB NPU
Silero-VAD ONNX float Snapdragon® 8 Gen 3 Mobile 0.078 ms 0 - 35 MB NPU
Silero-VAD ONNX float Snapdragon® 8 Gen 1 Mobile 0.126 ms 0 - 35 MB NPU
Silero-VAD ONNX float Qualcomm® Dragonwing™ IQ-8275 0.334 ms 0 - 4 MB NPU
Silero-VAD ONNX float Qualcomm® Dragonwing™ QCS8550 (Proxy) 0.097 ms 0 - 29 MB NPU
Silero-VAD ONNX float Qualcomm® QCS8450 0.126 ms 0 - 35 MB NPU
Silero-VAD ONNX float Qualcomm® Dragonwing™ IQ-9075 0.214 ms 0 - 3 MB NPU
Silero-VAD ONNX float Qualcomm® Dragonwing™ IQ-X7181 0.072 ms 0 - 0 MB NPU
Silero-VAD ONNX float Qualcomm® Dragonwing™ Q-8750 0.07 ms 0 - 24 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 0.071 ms 0 - 26 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Snapdragon® 8 Elite For Galaxy Mobile 0.078 ms 0 - 25 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Snapdragon® X2 Elite 0.057 ms 1 - 1 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Snapdragon® X Elite 0.073 ms 0 - 0 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Snapdragon® 8 Gen 3 Mobile 0.084 ms 0 - 34 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Qualcomm® Dragonwing™ IQ-8275 0.165 ms 0 - 4 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Qualcomm® Dragonwing™ QCS8550 (Proxy) 0.099 ms 0 - 2 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Qualcomm® Dragonwing™ IQ-9075 0.195 ms 0 - 3 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Qualcomm® Dragonwing™ IQ-X7181 0.073 ms 0 - 0 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Qualcomm® Dragonwing™ Q-6690 0.28 ms 0 - 24 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Qualcomm® Dragonwing™ Q-7790 0.088 ms 0 - 24 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Qualcomm® Dragonwing™ Q-8750 0.078 ms 0 - 25 MB NPU
Silero-VAD ONNX w8a16_mixed_int16 Snapdragon® 7 Gen 4 Mobile 0.088 ms 0 - 24 MB NPU
Silero-VAD QNN_DLC float Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 0.064 ms 0 - 24 MB NPU
Silero-VAD QNN_DLC float Snapdragon® 8 Elite For Galaxy Mobile 0.065 ms 0 - 28 MB NPU
Silero-VAD QNN_DLC float Snapdragon® X2 Elite 0.165 ms 0 - 0 MB NPU
Silero-VAD QNN_DLC float Snapdragon® X Elite 0.174 ms 0 - 0 MB NPU
Silero-VAD QNN_DLC float Snapdragon® 8 Gen 3 Mobile 0.067 ms 0 - 33 MB NPU
Silero-VAD QNN_DLC float Snapdragon® 8 Gen 1 Mobile 0.116 ms 0 - 34 MB NPU
Silero-VAD QNN_DLC float Qualcomm® Dragonwing™ IQ-8275 0.239 ms 0 - 3 MB NPU
Silero-VAD QNN_DLC float Qualcomm® Dragonwing™ QCS8550 (Proxy) 0.091 ms 0 - 1 MB NPU
Silero-VAD QNN_DLC float Qualcomm® SA8775P 0.236 ms 0 - 26 MB NPU
Silero-VAD QNN_DLC float Qualcomm® SA8650P 0.236 ms 0 - 26 MB NPU
Silero-VAD QNN_DLC float Qualcomm® SA8255P 0.236 ms 0 - 26 MB NPU
Silero-VAD QNN_DLC float Qualcomm® QCS8450 0.116 ms 0 - 34 MB NPU
Silero-VAD QNN_DLC float Qualcomm® Dragonwing™ IQ-9075 0.152 ms 2 - 4 MB NPU
Silero-VAD QNN_DLC float Qualcomm® Dragonwing™ IQ-X7181 0.174 ms 0 - 0 MB NPU
Silero-VAD QNN_DLC float Qualcomm® Dragonwing™ Q-8750 0.065 ms 0 - 28 MB NPU
Silero-VAD QNN_DLC float Qualcomm® SA8295P 0.237 ms 0 - 21 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 0.065 ms 0 - 23 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Snapdragon® 8 Elite For Galaxy Mobile 0.064 ms 0 - 23 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Snapdragon® X2 Elite 0.149 ms 0 - 0 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Snapdragon® X Elite 0.177 ms 0 - 0 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Snapdragon® 8 Gen 3 Mobile 0.079 ms 0 - 32 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Qualcomm® Dragonwing™ IQ-8275 0.168 ms 0 - 3 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Qualcomm® Dragonwing™ QCS8550 (Proxy) 0.097 ms 0 - 1 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Qualcomm® SA8650P 0.237 ms 0 - 26 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Qualcomm® SA8255P 0.237 ms 0 - 26 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Qualcomm® Dragonwing™ IQ-9075 0.152 ms 2 - 4 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Qualcomm® Dragonwing™ IQ-X7181 0.177 ms 0 - 0 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Qualcomm® Dragonwing™ Q-6690 0.19 ms 0 - 22 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Qualcomm® Dragonwing™ Q-7790 0.079 ms 0 - 23 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Qualcomm® Dragonwing™ Q-8750 0.064 ms 0 - 23 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Qualcomm® SA7255P 0.35 ms 0 - 24 MB NPU
Silero-VAD QNN_DLC w8a16_mixed_int16 Snapdragon® 7 Gen 4 Mobile 0.079 ms 0 - 23 MB NPU
Silero-VAD TFLITE float Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 0.071 ms 0 - 24 MB NPU
Silero-VAD TFLITE float Snapdragon® 8 Elite For Galaxy Mobile 0.065 ms 0 - 23 MB NPU
Silero-VAD TFLITE float Snapdragon® 8 Gen 3 Mobile 0.08 ms 0 - 31 MB NPU
Silero-VAD TFLITE float Snapdragon® 8 Gen 1 Mobile 0.116 ms 0 - 38 MB NPU
Silero-VAD TFLITE float Qualcomm® Dragonwing™ IQ-8275 0.15 ms 0 - 4 MB NPU
Silero-VAD TFLITE float Qualcomm® Dragonwing™ QCS8550 (Proxy) 0.081 ms 0 - 1 MB NPU
Silero-VAD TFLITE float Qualcomm® QCS8450 0.116 ms 0 - 38 MB NPU
Silero-VAD TFLITE float Qualcomm® Dragonwing™ IQ-9075 0.156 ms 0 - 3 MB NPU
Silero-VAD TFLITE float Qualcomm® Dragonwing™ Q-8750 0.065 ms 0 - 23 MB NPU
Silero-VAD TFLITE float Qualcomm® SA7255P 0.371 ms 0 - 24 MB NPU
Silero-VAD TFLITE float Qualcomm® SA8295P 0.246 ms 0 - 21 MB NPU

License

  • The license for the original implementation of Silero-VAD can be found here.

References

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Paper for qualcomm/Silero-VAD