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Whisper-Large-V3-Turbo

Automatic Speech Recognition
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Whisper-Large-V3-Turbo: Optimized for Mobile Deployment

Transformer-based automatic speech recognition (ASR) model for multilingual transcription and translation available on HuggingFace

Whisper large-v3-turbo is a finetuned version of a pruned Whisper large-v3. In other words, it's the exact same model, except that the number of decoding layers have reduced from 32 to 4. As a result, the model is way faster, at the expense of a minor quality degradation. 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 model is an implementation of Whisper-Large-V3-Turbo found here.

This repository provides scripts to run Whisper-Large-V3-Turbo on Qualcomm® devices. More details on model performance across various devices, can be found here.

Model Details

  • Model Type: Model_use_case.speech_recognition
  • Model Stats:
    • Model checkpoint: openai/whisper-large-v3-turbo
    • Input resolution: 128x3000 (30 seconds audio)
    • Max decoded sequence length: 200 tokens
Model Precision Device Chipset Target Runtime Inference Time (ms) Peak Memory Range (MB) Primary Compute Unit Target Model
HfWhisperEncoder float QCS8275 (Proxy) Qualcomm® QCS8275 (Proxy) QNN_CONTEXT_BINARY 2237.403 ms 1 - 11 MB NPU Use Export Script
HfWhisperEncoder float QCS8550 (Proxy) Qualcomm® QCS8550 (Proxy) QNN_CONTEXT_BINARY 594.106 ms 0 - 2 MB NPU Use Export Script
HfWhisperEncoder float QCS8550 (Proxy) Qualcomm® QCS8550 (Proxy) PRECOMPILED_QNN_ONNX 798.664 ms 0 - 1537 MB NPU Use Export Script
HfWhisperEncoder float QCS9075 (Proxy) Qualcomm® QCS9075 (Proxy) QNN_CONTEXT_BINARY 3239.16 ms 1 - 11 MB NPU Use Export Script
HfWhisperEncoder float SA7255P ADP Qualcomm® SA7255P QNN_CONTEXT_BINARY 2237.403 ms 1 - 11 MB NPU Use Export Script
HfWhisperEncoder float SA8255 (Proxy) Qualcomm® SA8255P (Proxy) QNN_CONTEXT_BINARY 593.978 ms 1 - 3 MB NPU Use Export Script
HfWhisperEncoder float SA8295P ADP Qualcomm® SA8295P QNN_CONTEXT_BINARY 1122.709 ms 1 - 14 MB NPU Use Export Script
HfWhisperEncoder float SA8650 (Proxy) Qualcomm® SA8650P (Proxy) QNN_CONTEXT_BINARY 594.385 ms 1 - 3 MB NPU Use Export Script
HfWhisperEncoder float SA8775P ADP Qualcomm® SA8775P QNN_CONTEXT_BINARY 3239.16 ms 1 - 11 MB NPU Use Export Script
HfWhisperEncoder float Samsung Galaxy S24 Snapdragon® 8 Gen 3 Mobile QNN_CONTEXT_BINARY 432.891 ms 1 - 16 MB NPU Use Export Script
HfWhisperEncoder float Samsung Galaxy S24 Snapdragon® 8 Gen 3 Mobile PRECOMPILED_QNN_ONNX 586.494 ms 32 - 47 MB NPU Use Export Script
HfWhisperEncoder float Samsung Galaxy S25 Snapdragon® 8 Elite For Galaxy Mobile QNN_CONTEXT_BINARY 314.366 ms 1 - 14 MB NPU Use Export Script
HfWhisperEncoder float Samsung Galaxy S25 Snapdragon® 8 Elite For Galaxy Mobile PRECOMPILED_QNN_ONNX 471.078 ms 64 - 80 MB NPU Use Export Script
HfWhisperEncoder float Snapdragon 8 Elite Gen 5 QRD Snapdragon® 8 Elite Gen5 Mobile QNN_CONTEXT_BINARY 257.32 ms 3 - 11 MB NPU Use Export Script
HfWhisperEncoder float Snapdragon 8 Elite Gen 5 QRD Snapdragon® 8 Elite Gen5 Mobile PRECOMPILED_QNN_ONNX 379.508 ms 63 - 74 MB NPU Use Export Script
HfWhisperEncoder float Snapdragon X Elite CRD Snapdragon® X Elite QNN_CONTEXT_BINARY 589.21 ms 1 - 1 MB NPU Use Export Script
HfWhisperEncoder float Snapdragon X Elite CRD Snapdragon® X Elite PRECOMPILED_QNN_ONNX 772.787 ms 1395 - 1395 MB NPU Use Export Script
HfWhisperDecoder float QCS8275 (Proxy) Qualcomm® QCS8275 (Proxy) QNN_CONTEXT_BINARY 14.734 ms 31 - 39 MB NPU Use Export Script
HfWhisperDecoder float QCS8550 (Proxy) Qualcomm® QCS8550 (Proxy) QNN_CONTEXT_BINARY 9.652 ms 27 - 29 MB NPU Use Export Script
HfWhisperDecoder float QCS8550 (Proxy) Qualcomm® QCS8550 (Proxy) PRECOMPILED_QNN_ONNX 10.022 ms 0 - 415 MB NPU Use Export Script
HfWhisperDecoder float QCS9075 (Proxy) Qualcomm® QCS9075 (Proxy) QNN_CONTEXT_BINARY 10.65 ms 33 - 42 MB NPU Use Export Script
HfWhisperDecoder float SA7255P ADP Qualcomm® SA7255P QNN_CONTEXT_BINARY 14.734 ms 31 - 39 MB NPU Use Export Script
HfWhisperDecoder float SA8255 (Proxy) Qualcomm® SA8255P (Proxy) QNN_CONTEXT_BINARY 9.806 ms 28 - 29 MB NPU Use Export Script
HfWhisperDecoder float SA8295P ADP Qualcomm® SA8295P QNN_CONTEXT_BINARY 11.623 ms 33 - 47 MB NPU Use Export Script
HfWhisperDecoder float SA8650 (Proxy) Qualcomm® SA8650P (Proxy) QNN_CONTEXT_BINARY 9.811 ms 33 - 36 MB NPU Use Export Script
HfWhisperDecoder float SA8775P ADP Qualcomm® SA8775P QNN_CONTEXT_BINARY 10.65 ms 33 - 42 MB NPU Use Export Script
HfWhisperDecoder float Samsung Galaxy S24 Snapdragon® 8 Gen 3 Mobile QNN_CONTEXT_BINARY 7.74 ms 33 - 52 MB NPU Use Export Script
HfWhisperDecoder float Samsung Galaxy S24 Snapdragon® 8 Gen 3 Mobile PRECOMPILED_QNN_ONNX 8.01 ms 42 - 58 MB NPU Use Export Script
HfWhisperDecoder float Samsung Galaxy S25 Snapdragon® 8 Elite For Galaxy Mobile QNN_CONTEXT_BINARY 6.616 ms 4 - 21 MB NPU Use Export Script
HfWhisperDecoder float Samsung Galaxy S25 Snapdragon® 8 Elite For Galaxy Mobile PRECOMPILED_QNN_ONNX 6.974 ms 21 - 36 MB NPU Use Export Script
HfWhisperDecoder float Snapdragon 8 Elite Gen 5 QRD Snapdragon® 8 Elite Gen5 Mobile QNN_CONTEXT_BINARY 6.122 ms 33 - 45 MB NPU Use Export Script
HfWhisperDecoder float Snapdragon 8 Elite Gen 5 QRD Snapdragon® 8 Elite Gen5 Mobile PRECOMPILED_QNN_ONNX 6.395 ms 42 - 52 MB NPU Use Export Script
HfWhisperDecoder float Snapdragon X Elite CRD Snapdragon® X Elite QNN_CONTEXT_BINARY 8.15 ms 33 - 33 MB NPU Use Export Script
HfWhisperDecoder float Snapdragon X Elite CRD Snapdragon® X Elite PRECOMPILED_QNN_ONNX 8.324 ms 400 - 400 MB NPU Use Export Script

Installation

Install the package via pip:

# NOTE: 3.10 <= PYTHON_VERSION < 3.14 is supported.
pip install "qai-hub-models[whisper-large-v3-turbo]"

Configure Qualcomm® AI Hub Workbench to run this model on a cloud-hosted device

Sign-in to Qualcomm® AI Hub Workbench with your Qualcomm® ID. Once signed in navigate to Account -> Settings -> API Token.

With this API token, you can configure your client to run models on the cloud hosted devices.

qai-hub configure --api_token API_TOKEN

Navigate to docs for more information.

Demo off target

The package contains a simple end-to-end demo that downloads pre-trained weights and runs this model on a sample input.

python -m qai_hub_models.models.whisper_large_v3_turbo.demo

The above demo runs a reference implementation of pre-processing, model inference, and post processing.

NOTE: If you want running in a Jupyter Notebook or Google Colab like environment, please add the following to your cell (instead of the above).

%run -m qai_hub_models.models.whisper_large_v3_turbo.demo

Run model on a cloud-hosted device

In addition to the demo, you can also run the model on a cloud-hosted Qualcomm® device. This script does the following:

  • Performance check on-device on a cloud-hosted device
  • Downloads compiled assets that can be deployed on-device for Android.
  • Accuracy check between PyTorch and on-device outputs.
python -m qai_hub_models.models.whisper_large_v3_turbo.export

How does this work?

This export script leverages Qualcomm® AI Hub to optimize, validate, and deploy this model on-device. Lets go through each step below in detail:

Step 1: Compile model for on-device deployment

To compile a PyTorch model for on-device deployment, we first trace the model in memory using the jit.trace and then call the submit_compile_job API.

import torch

import qai_hub as hub
from qai_hub_models.models.whisper_large_v3_turbo import Model

# Load the model
torch_model = Model.from_pretrained()

# Device
device = hub.Device("Samsung Galaxy S25")

# Trace model
input_shape = torch_model.get_input_spec()
sample_inputs = torch_model.sample_inputs()

pt_model = torch.jit.trace(torch_model, [torch.tensor(data[0]) for _, data in sample_inputs.items()])

# Compile model on a specific device
compile_job = hub.submit_compile_job(
    model=pt_model,
    device=device,
    input_specs=torch_model.get_input_spec(),
)

# Get target model to run on-device
target_model = compile_job.get_target_model()

Step 2: Performance profiling on cloud-hosted device

After compiling models from step 1. Models can be profiled model on-device using the target_model. Note that this scripts runs the model on a device automatically provisioned in the cloud. Once the job is submitted, you can navigate to a provided job URL to view a variety of on-device performance metrics.

profile_job = hub.submit_profile_job(
    model=target_model,
    device=device,
)

Step 3: Verify on-device accuracy

To verify the accuracy of the model on-device, you can run on-device inference on sample input data on the same cloud hosted device.

input_data = torch_model.sample_inputs()
inference_job = hub.submit_inference_job(
    model=target_model,
    device=device,
    inputs=input_data,
)
    on_device_output = inference_job.download_output_data()

With the output of the model, you can compute like PSNR, relative errors or spot check the output with expected output.

Note: This on-device profiling and inference requires access to Qualcomm® AI Hub Workbench. Sign up for access.

Deploying compiled model to Android

The models can be deployed using multiple runtimes:

  • TensorFlow Lite (.tflite export): This tutorial provides a guide to deploy the .tflite model in an Android application.

  • QNN (.so export ): This sample app provides instructions on how to use the .so shared library in an Android application.

View on Qualcomm® AI Hub

Get more details on Whisper-Large-V3-Turbo's performance across various devices here. Explore all available models on Qualcomm® AI Hub

License

  • The license for the original implementation of Whisper-Large-V3-Turbo can be found here.
  • The license for the compiled assets for on-device deployment can be found here

References

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