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Whisper-Base

Automatic Speech Recognition
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Whisper-Base: Optimized for Qualcomm Devices

HuggingFace Whisper-Base ASR (Automatic Speech Recognition) model is a state-of-the-art system designed for transcribing spoken language into written text. This model is based on the transformer architecture and has been optimized for edge inference by replacing Multi-Head Attention (MHA) with Single-Head Attention (SHA) and linear layers with convolutional (conv) layers. It exhibits robust performance in realistic, noisy environments, making it highly reliable for real-world applications. Specifically, it excels in long-form transcription, capable of accurately transcribing audio clips up to 30 seconds long. Time to the first token is the encoder's latency, while time to each additional token is decoder's latency, where we assume a max decoded length specified below.

This is based on the implementation of Whisper-Base 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.

Deploying Whisper-Base on-device

This model is compatible with the Qualcomm Voice AI SDK. Download the SDK from the Qualcomm Package Manager to deploy this model on-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
PRECOMPILED_QNN_ONNX float Snapdragon® X2 Elite QAIRT 2.45, ONNX Runtime 1.27.1 Download
PRECOMPILED_QNN_ONNX float Snapdragon® X Elite QAIRT 2.45, ONNX Runtime 1.27.1 Download
PRECOMPILED_QNN_ONNX float Snapdragon® 8 Gen 3 Mobile QAIRT 2.45, ONNX Runtime 1.27.1 Download
PRECOMPILED_QNN_ONNX float Snapdragon® 8 Gen 1 Mobile QAIRT 2.45, ONNX Runtime 1.27.1 Download
PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ IQ-8275 QAIRT 2.45, ONNX Runtime 1.27.1 Download
PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ QCS8550 (Proxy) QAIRT 2.45, ONNX Runtime 1.27.1 Download
PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ IQ-9075 QAIRT 2.45, ONNX Runtime 1.27.1 Download
PRECOMPILED_QNN_ONNX float Snapdragon® 8 Elite Mobile QAIRT 2.45, ONNX Runtime 1.27.1 Download
PRECOMPILED_QNN_ONNX float Snapdragon® 8 Elite Gen 5 Mobile QAIRT 2.45, ONNX Runtime 1.27.1 Download
QNN_CONTEXT_BINARY float Snapdragon® X2 Elite QAIRT 2.45 Download
QNN_CONTEXT_BINARY float Snapdragon® X Elite QAIRT 2.45 Download
QNN_CONTEXT_BINARY float Snapdragon® 8 Gen 3 Mobile QAIRT 2.45 Download
QNN_CONTEXT_BINARY float Snapdragon® 8 Gen 1 Mobile QAIRT 2.45 Download
QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ IQ-8275 QAIRT 2.45 Download
QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ QCS8550 (Proxy) QAIRT 2.45 Download
QNN_CONTEXT_BINARY float Qualcomm® SA8775P QAIRT 2.45 Download
QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ IQ-9075 QAIRT 2.45 Download
QNN_CONTEXT_BINARY float Qualcomm® SA7255P QAIRT 2.45 Download
QNN_CONTEXT_BINARY float Qualcomm® SA8295P QAIRT 2.45 Download
QNN_CONTEXT_BINARY float Snapdragon® 8 Elite Mobile QAIRT 2.45 Download
QNN_CONTEXT_BINARY float Snapdragon® 8 Elite Gen 5 Mobile QAIRT 2.45 Download
VOICE_AI float Snapdragon® X2 Elite QAIRT 2.45 Download
VOICE_AI float Snapdragon® X Elite QAIRT 2.45 Download
VOICE_AI float Snapdragon® 8 Gen 3 Mobile QAIRT 2.45 Download
VOICE_AI float Snapdragon® 8 Gen 1 Mobile QAIRT 2.45 Download
VOICE_AI float Qualcomm® Dragonwing™ IQ-8275 QAIRT 2.45 Download
VOICE_AI float Qualcomm® Dragonwing™ QCS8550 (Proxy) QAIRT 2.45 Download
VOICE_AI float Qualcomm® SA8775P QAIRT 2.45 Download
VOICE_AI float Qualcomm® Dragonwing™ IQ-9075 QAIRT 2.45 Download
VOICE_AI float Qualcomm® SA7255P QAIRT 2.45 Download
VOICE_AI float Qualcomm® SA8295P QAIRT 2.45 Download
VOICE_AI float Snapdragon® 8 Elite Mobile QAIRT 2.45 Download
VOICE_AI float Snapdragon® 8 Elite Gen 5 Mobile QAIRT 2.45 Download

For more device-specific assets and performance metrics, visit Whisper-Base 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 Whisper-Base on GitHub for usage instructions.

Model Details

Model Type: Model_use_case.speech_recognition

Model Stats:

  • Input resolution: 80x3000 (30 seconds audio)
  • Max decoded sequence length: 200 tokens
  • Model checkpoint: openai/whisper-base
  • Model size (decoder) (float): 187 MB
  • Model size (encoder) (float): 90.7 MB
  • Number of parameters (decoder): 48.9M
  • Number of parameters (encoder): 23.7M

Performance Summary

Model Runtime Precision Chipset Inference Time (ms) Peak Memory Range (MB) Primary Compute Unit
decoder PRECOMPILED_QNN_ONNX float Snapdragon® X2 Elite 2.296 ms 20 - 20 MB NPU
decoder PRECOMPILED_QNN_ONNX float Snapdragon® X Elite 3.612 ms 126 - 126 MB NPU
decoder PRECOMPILED_QNN_ONNX float Snapdragon® 8 Gen 3 Mobile 3.521 ms 6 - 18 MB NPU
decoder PRECOMPILED_QNN_ONNX float Snapdragon® 8 Gen 1 Mobile 5.183 ms 25 - 40 MB NPU
decoder PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ IQ-8275 5.618 ms 20 - 43 MB NPU
decoder PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ QCS8550 (Proxy) 4.234 ms 20 - 22 MB NPU
decoder PRECOMPILED_QNN_ONNX float Qualcomm® QCS8450 5.183 ms 25 - 40 MB NPU
decoder PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ IQ-9075 5.199 ms 20 - 43 MB NPU
decoder PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ IQ-X7181 3.612 ms 126 - 126 MB NPU
decoder PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ Q-8750 2.875 ms 5 - 17 MB NPU
decoder PRECOMPILED_QNN_ONNX float Snapdragon® 8 Elite Mobile 2.875 ms 5 - 17 MB NPU
decoder PRECOMPILED_QNN_ONNX float Snapdragon® 8 Elite Gen 5 Mobile 2.678 ms 21 - 29 MB NPU
decoder QNN_CONTEXT_BINARY float Snapdragon® X2 Elite 2.962 ms 20 - 20 MB NPU
decoder QNN_CONTEXT_BINARY float Snapdragon® X Elite 3.761 ms 20 - 20 MB NPU
decoder QNN_CONTEXT_BINARY float Snapdragon® 8 Gen 3 Mobile 3.443 ms 0 - 8 MB NPU
decoder QNN_CONTEXT_BINARY float Snapdragon® 8 Gen 1 Mobile 5.14 ms 22 - 32 MB NPU
decoder QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ IQ-8275 5.469 ms 20 - 45 MB NPU
decoder QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ QCS8550 (Proxy) 4.277 ms 19 - 20 MB NPU
decoder QNN_CONTEXT_BINARY float Qualcomm® SA8775P 5.245 ms 20 - 29 MB NPU
decoder QNN_CONTEXT_BINARY float Qualcomm® SA8650P 5.245 ms 20 - 29 MB NPU
decoder QNN_CONTEXT_BINARY float Qualcomm® SA8255P 5.245 ms 20 - 29 MB NPU
decoder QNN_CONTEXT_BINARY float Qualcomm® QCS8450 5.14 ms 22 - 32 MB NPU
decoder QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ IQ-9075 5.074 ms 22 - 46 MB NPU
decoder QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ IQ-X7181 3.761 ms 20 - 20 MB NPU
decoder QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ Q-8750 2.832 ms 0 - 9 MB NPU
decoder QNN_CONTEXT_BINARY float Qualcomm® SA7255P 7.25 ms 2 - 10 MB NPU
decoder QNN_CONTEXT_BINARY float Qualcomm® SA8295P 5.25 ms 18 - 23 MB NPU
decoder QNN_CONTEXT_BINARY float Snapdragon® 8 Elite Mobile 2.832 ms 0 - 9 MB NPU
decoder QNN_CONTEXT_BINARY float Snapdragon® 8 Elite Gen 5 Mobile 2.669 ms 20 - 29 MB NPU
decoder VOICE_AI float Snapdragon® X2 Elite 2.769 ms 20 - 20 MB NPU
decoder VOICE_AI float Snapdragon® X Elite 3.939 ms 20 - 20 MB NPU
decoder VOICE_AI float Snapdragon® 8 Gen 3 Mobile 3.444 ms 0 - 7 MB NPU
decoder VOICE_AI float Snapdragon® 8 Gen 1 Mobile 5.004 ms 20 - 30 MB NPU
decoder VOICE_AI float Qualcomm® Dragonwing™ IQ-8275 5.435 ms 20 - 45 MB NPU
decoder VOICE_AI float Qualcomm® Dragonwing™ QCS8550 (Proxy) 4.19 ms 20 - 22 MB NPU
decoder VOICE_AI float Qualcomm® SA8775P 5.256 ms 20 - 30 MB NPU
decoder VOICE_AI float Qualcomm® SA8650P 5.256 ms 20 - 30 MB NPU
decoder VOICE_AI float Qualcomm® SA8255P 5.256 ms 20 - 30 MB NPU
decoder VOICE_AI float Qualcomm® QCS8450 5.004 ms 20 - 30 MB NPU
decoder VOICE_AI float Qualcomm® Dragonwing™ IQ-9075 5.082 ms 20 - 44 MB NPU
decoder VOICE_AI float Qualcomm® Dragonwing™ IQ-X7181 3.939 ms 20 - 20 MB NPU
decoder VOICE_AI float Qualcomm® Dragonwing™ Q-8750 2.846 ms 0 - 13 MB NPU
decoder VOICE_AI float Qualcomm® SA7255P 7.223 ms 20 - 29 MB NPU
decoder VOICE_AI float Qualcomm® SA8295P 5.23 ms 18 - 23 MB NPU
decoder VOICE_AI float Snapdragon® 8 Elite Mobile 2.846 ms 0 - 13 MB NPU
decoder VOICE_AI float Snapdragon® 8 Elite Gen 5 Mobile 2.674 ms 20 - 30 MB NPU
encoder PRECOMPILED_QNN_ONNX float Snapdragon® X2 Elite 22.66 ms 67 - 67 MB NPU
encoder PRECOMPILED_QNN_ONNX float Snapdragon® X Elite 49.321 ms 67 - 67 MB NPU
encoder PRECOMPILED_QNN_ONNX float Snapdragon® 8 Gen 3 Mobile 36.016 ms 40 - 47 MB NPU
encoder PRECOMPILED_QNN_ONNX float Snapdragon® 8 Gen 1 Mobile 96.777 ms 38 - 52 MB NPU
encoder PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ IQ-8275 56.928 ms 37 - 41 MB NPU
encoder PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ QCS8550 (Proxy) 47.906 ms 7 - 56 MB NPU
encoder PRECOMPILED_QNN_ONNX float Qualcomm® QCS8450 96.777 ms 38 - 52 MB NPU
encoder PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ IQ-9075 56.152 ms 41 - 44 MB NPU
encoder PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ IQ-X7181 49.321 ms 67 - 67 MB NPU
encoder PRECOMPILED_QNN_ONNX float Qualcomm® Dragonwing™ Q-8750 25.712 ms 40 - 50 MB NPU
encoder PRECOMPILED_QNN_ONNX float Snapdragon® 8 Elite Mobile 25.712 ms 40 - 50 MB NPU
encoder PRECOMPILED_QNN_ONNX float Snapdragon® 8 Elite Gen 5 Mobile 21.941 ms 39 - 46 MB NPU
encoder QNN_CONTEXT_BINARY float Snapdragon® X2 Elite 22.935 ms 0 - 0 MB NPU
encoder QNN_CONTEXT_BINARY float Snapdragon® X Elite 49.053 ms 0 - 0 MB NPU
encoder QNN_CONTEXT_BINARY float Snapdragon® 8 Gen 3 Mobile 35.954 ms 1 - 8 MB NPU
encoder QNN_CONTEXT_BINARY float Snapdragon® 8 Gen 1 Mobile 95.022 ms 1 - 10 MB NPU
encoder QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ IQ-8275 57.368 ms 0 - 21 MB NPU
encoder QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ QCS8550 (Proxy) 47.846 ms 1 - 3 MB NPU
encoder QNN_CONTEXT_BINARY float Qualcomm® SA8775P 54.916 ms 1 - 10 MB NPU
encoder QNN_CONTEXT_BINARY float Qualcomm® SA8650P 54.916 ms 1 - 10 MB NPU
encoder QNN_CONTEXT_BINARY float Qualcomm® SA8255P 54.916 ms 1 - 10 MB NPU
encoder QNN_CONTEXT_BINARY float Qualcomm® QCS8450 95.022 ms 1 - 10 MB NPU
encoder QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ IQ-9075 56.085 ms 0 - 20 MB NPU
encoder QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ IQ-X7181 49.053 ms 0 - 0 MB NPU
encoder QNN_CONTEXT_BINARY float Qualcomm® Dragonwing™ Q-8750 25.692 ms 1 - 13 MB NPU
encoder QNN_CONTEXT_BINARY float Qualcomm® SA7255P 142.38 ms 1 - 9 MB NPU
encoder QNN_CONTEXT_BINARY float Qualcomm® SA8295P 68.829 ms 0 - 6 MB NPU
encoder QNN_CONTEXT_BINARY float Snapdragon® 8 Elite Mobile 25.692 ms 1 - 13 MB NPU
encoder QNN_CONTEXT_BINARY float Snapdragon® 8 Elite Gen 5 Mobile 22.072 ms 1 - 9 MB NPU
encoder VOICE_AI float Snapdragon® X2 Elite 22.901 ms 0 - 0 MB NPU
encoder VOICE_AI float Snapdragon® X Elite 49.084 ms 0 - 0 MB NPU
encoder VOICE_AI float Snapdragon® 8 Gen 3 Mobile 35.842 ms 1 - 9 MB NPU
encoder VOICE_AI float Snapdragon® 8 Gen 1 Mobile 95.276 ms 0 - 10 MB NPU
encoder VOICE_AI float Qualcomm® Dragonwing™ IQ-8275 57.116 ms 0 - 21 MB NPU
encoder VOICE_AI float Qualcomm® Dragonwing™ QCS8550 (Proxy) 47.948 ms 1 - 13 MB NPU
encoder VOICE_AI float Qualcomm® SA8775P 54.893 ms 1 - 10 MB NPU
encoder VOICE_AI float Qualcomm® SA8650P 54.893 ms 1 - 10 MB NPU
encoder VOICE_AI float Qualcomm® SA8255P 54.893 ms 1 - 10 MB NPU
encoder VOICE_AI float Qualcomm® QCS8450 95.276 ms 0 - 10 MB NPU
encoder VOICE_AI float Qualcomm® Dragonwing™ IQ-9075 56.377 ms 0 - 20 MB NPU
encoder VOICE_AI float Qualcomm® Dragonwing™ IQ-X7181 49.084 ms 0 - 0 MB NPU
encoder VOICE_AI float Qualcomm® Dragonwing™ Q-8750 25.814 ms 1 - 13 MB NPU
encoder VOICE_AI float Qualcomm® SA7255P 142.608 ms 1 - 10 MB NPU
encoder VOICE_AI float Qualcomm® SA8295P 68.884 ms 0 - 6 MB NPU
encoder VOICE_AI float Snapdragon® 8 Elite Mobile 25.814 ms 1 - 13 MB NPU
encoder VOICE_AI float Snapdragon® 8 Elite Gen 5 Mobile 22.068 ms 1 - 9 MB NPU

License

  • The license for the original implementation of Whisper-Base can be found here.

References

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