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MeloTTS-EN

Text-to-Audio
PyTorch
real_time
android
Model card Files
xet
 Community

MeloTTS-EN: Optimized for Qualcomm Devices

MeloTTS is a high-quality multi-lingual text-to-speech library for English, Chinese and Spanish language.

This is based on the implementation of MeloTTS-EN 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
VOICE_AI mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile QAIRT 2.45 Download
VOICE_AI mixed_with_float Snapdragon® X2 Elite QAIRT 2.45 Download
VOICE_AI mixed_with_float Snapdragon® X Elite QAIRT 2.45 Download
VOICE_AI mixed_with_float Snapdragon® 8 Gen 3 Mobile QAIRT 2.45 Download
VOICE_AI mixed_with_float Qualcomm® QCS8550 (Proxy) QAIRT 2.45 Download
VOICE_AI mixed_with_float Qualcomm® SA8775P QAIRT 2.45 Download
VOICE_AI mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile QAIRT 2.45 Download
VOICE_AI mixed_with_float Qualcomm® SA7255P QAIRT 2.45 Download
VOICE_AI mixed_with_float Qualcomm® SA8295P QAIRT 2.45 Download
VOICE_AI mixed_with_float Qualcomm® QCS9075 QAIRT 2.45 Download
VOICE_AI mixed_with_float Qualcomm® QCS8450 (Proxy) QAIRT 2.45 Download

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

Model Details

Model Type: Model_use_case.audio_generation

Model Stats:

  • Model checkpoint: myshell-ai/MeloTTS-English
  • Max decoded sequence length: 512 tokens
  • Number of parameters (encoder): 8.30M
  • Model size (encoder) (float): 31.8 MB
  • Number of parameters (flow): 20.1M
  • Model size (flow) (float): 76.9 MB
  • Number of parameters (decoder): 14.5M
  • Model size (decoder) (float): 55.5 MB
  • Number of parameters (bert_wrapper): 94.5M
  • Model size (bert_wrapper) (float): 360 MB
  • Number of parameters (t5_encoder): 15.1M
  • Model size (t5_encoder) (float): 57.5 MB
  • Number of parameters (t5_decoder): 5.72M
  • Model size (t5_decoder) (float): 21.8 MB

Performance Summary

Model Runtime Precision Chipset Inference Time (ms) Peak Memory Range (MB) Primary Compute Unit
bert_wrapper VOICE_AI mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 2.777 ms 0 - 9 MB NPU
bert_wrapper VOICE_AI mixed_with_float Snapdragon® 8 Elite Mobile 3.446 ms 0 - 13 MB NPU
bert_wrapper VOICE_AI mixed_with_float Snapdragon® X2 Elite 3.353 ms 0 - 0 MB NPU
bert_wrapper VOICE_AI mixed_with_float Snapdragon® X Elite 7.36 ms 0 - 0 MB NPU
bert_wrapper VOICE_AI mixed_with_float Snapdragon® X Elite 7.36 ms 0 - 0 MB NPU
bert_wrapper VOICE_AI mixed_with_float Snapdragon® 8 Gen 3 Mobile 4.7 ms 0 - 7 MB NPU
bert_wrapper VOICE_AI mixed_with_float Qualcomm® QCS8275 (Proxy) 29.927 ms 0 - 8 MB NPU
bert_wrapper VOICE_AI mixed_with_float Qualcomm® QCS8550 (Proxy) 6.792 ms 0 - 1 MB NPU
bert_wrapper VOICE_AI mixed_with_float Qualcomm® SA8775P 9.089 ms 0 - 9 MB NPU
bert_wrapper VOICE_AI mixed_with_float Qualcomm® SA8775P 9.089 ms 0 - 9 MB NPU
bert_wrapper VOICE_AI mixed_with_float Qualcomm® SA8775P 9.089 ms 0 - 9 MB NPU
bert_wrapper VOICE_AI mixed_with_float Qualcomm® QCS9075 8.792 ms 0 - 2 MB NPU
bert_wrapper VOICE_AI mixed_with_float Qualcomm® QCS8450 (Proxy) 10.219 ms 0 - 9 MB NPU
bert_wrapper VOICE_AI mixed_with_float Qualcomm® SA7255P 29.927 ms 0 - 8 MB NPU
bert_wrapper VOICE_AI mixed_with_float Qualcomm® SA8295P 11.297 ms 0 - 6 MB NPU
bert_wrapper VOICE_AI mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 3.446 ms 0 - 13 MB NPU
decoder VOICE_AI mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 42.577 ms 0 - 10 MB NPU
decoder VOICE_AI mixed_with_float Snapdragon® 8 Elite Mobile 48.477 ms 0 - 9 MB NPU
decoder VOICE_AI mixed_with_float Snapdragon® X2 Elite 40.75 ms 0 - 0 MB NPU
decoder VOICE_AI mixed_with_float Snapdragon® X Elite 82.715 ms 0 - 0 MB NPU
decoder VOICE_AI mixed_with_float Snapdragon® X Elite 82.715 ms 0 - 0 MB NPU
decoder VOICE_AI mixed_with_float Snapdragon® 8 Gen 3 Mobile 60.784 ms 0 - 7 MB NPU
decoder VOICE_AI mixed_with_float Qualcomm® QCS8275 (Proxy) 135.029 ms 0 - 9 MB NPU
decoder VOICE_AI mixed_with_float Qualcomm® QCS8550 (Proxy) 85.3 ms 1 - 2 MB NPU
decoder VOICE_AI mixed_with_float Qualcomm® SA8775P 83.831 ms 0 - 9 MB NPU
decoder VOICE_AI mixed_with_float Qualcomm® SA8775P 83.831 ms 0 - 9 MB NPU
decoder VOICE_AI mixed_with_float Qualcomm® SA8775P 83.831 ms 0 - 9 MB NPU
decoder VOICE_AI mixed_with_float Qualcomm® QCS9075 83.266 ms 0 - 2 MB NPU
decoder VOICE_AI mixed_with_float Qualcomm® QCS8450 (Proxy) 114.794 ms 1 - 10 MB NPU
decoder VOICE_AI mixed_with_float Qualcomm® SA7255P 135.029 ms 0 - 9 MB NPU
decoder VOICE_AI mixed_with_float Qualcomm® SA8295P 100.064 ms 0 - 6 MB NPU
decoder VOICE_AI mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 48.477 ms 0 - 9 MB NPU
encoder VOICE_AI mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 23.749 ms 4 - 13 MB NPU
encoder VOICE_AI mixed_with_float Snapdragon® 8 Elite Mobile 24.87 ms 2 - 15 MB NPU
encoder VOICE_AI mixed_with_float Snapdragon® X2 Elite 25.311 ms 4 - 4 MB NPU
encoder VOICE_AI mixed_with_float Snapdragon® X Elite 39.907 ms 4 - 4 MB NPU
encoder VOICE_AI mixed_with_float Snapdragon® X Elite 39.907 ms 4 - 4 MB NPU
encoder VOICE_AI mixed_with_float Snapdragon® 8 Gen 3 Mobile 30.363 ms 4 - 10 MB NPU
encoder VOICE_AI mixed_with_float Qualcomm® QCS8275 (Proxy) 66.288 ms 2 - 10 MB NPU
encoder VOICE_AI mixed_with_float Qualcomm® QCS8550 (Proxy) 41.689 ms 4 - 5 MB NPU
encoder VOICE_AI mixed_with_float Qualcomm® SA8775P 43.28 ms 2 - 11 MB NPU
encoder VOICE_AI mixed_with_float Qualcomm® SA8775P 43.28 ms 2 - 11 MB NPU
encoder VOICE_AI mixed_with_float Qualcomm® SA8775P 43.28 ms 2 - 11 MB NPU
encoder VOICE_AI mixed_with_float Qualcomm® QCS9075 43.494 ms 6 - 11 MB NPU
encoder VOICE_AI mixed_with_float Qualcomm® QCS8450 (Proxy) 48.998 ms 4 - 13 MB NPU
encoder VOICE_AI mixed_with_float Qualcomm® SA7255P 66.288 ms 2 - 10 MB NPU
encoder VOICE_AI mixed_with_float Qualcomm® SA8295P 48.3 ms 0 - 5 MB NPU
encoder VOICE_AI mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 24.87 ms 2 - 15 MB NPU
flow VOICE_AI mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 62.889 ms 2 - 11 MB NPU
flow VOICE_AI mixed_with_float Snapdragon® 8 Elite Mobile 78.769 ms 2 - 15 MB NPU
flow VOICE_AI mixed_with_float Snapdragon® X2 Elite 61.668 ms 2 - 2 MB NPU
flow VOICE_AI mixed_with_float Snapdragon® X Elite 122.219 ms 2 - 2 MB NPU
flow VOICE_AI mixed_with_float Snapdragon® X Elite 122.219 ms 2 - 2 MB NPU
flow VOICE_AI mixed_with_float Snapdragon® 8 Gen 3 Mobile 91.598 ms 2 - 9 MB NPU
flow VOICE_AI mixed_with_float Qualcomm® QCS8275 (Proxy) 235.035 ms 2 - 11 MB NPU
flow VOICE_AI mixed_with_float Qualcomm® QCS8550 (Proxy) 121.928 ms 3 - 5 MB NPU
flow VOICE_AI mixed_with_float Qualcomm® SA8775P 121.067 ms 2 - 12 MB NPU
flow VOICE_AI mixed_with_float Qualcomm® SA8775P 121.067 ms 2 - 12 MB NPU
flow VOICE_AI mixed_with_float Qualcomm® SA8775P 121.067 ms 2 - 12 MB NPU
flow VOICE_AI mixed_with_float Qualcomm® QCS9075 120.441 ms 2 - 6 MB NPU
flow VOICE_AI mixed_with_float Qualcomm® QCS8450 (Proxy) 211.241 ms 2 - 12 MB NPU
flow VOICE_AI mixed_with_float Qualcomm® SA7255P 235.035 ms 2 - 11 MB NPU
flow VOICE_AI mixed_with_float Qualcomm® SA8295P 150.534 ms 0 - 5 MB NPU
flow VOICE_AI mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 78.769 ms 2 - 15 MB NPU
t5_decoder VOICE_AI mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 0.272 ms 0 - 10 MB NPU
t5_decoder VOICE_AI mixed_with_float Snapdragon® 8 Elite Mobile 0.271 ms 0 - 9 MB NPU
t5_decoder VOICE_AI mixed_with_float Snapdragon® X2 Elite 0.36 ms 1 - 1 MB NPU
t5_decoder VOICE_AI mixed_with_float Snapdragon® X Elite 0.425 ms 1 - 1 MB NPU
t5_decoder VOICE_AI mixed_with_float Snapdragon® X Elite 0.425 ms 1 - 1 MB NPU
t5_decoder VOICE_AI mixed_with_float Snapdragon® 8 Gen 3 Mobile 0.327 ms 0 - 8 MB NPU
t5_decoder VOICE_AI mixed_with_float Qualcomm® QCS8275 (Proxy) 0.991 ms 0 - 8 MB NPU
t5_decoder VOICE_AI mixed_with_float Qualcomm® QCS8550 (Proxy) 0.404 ms 1 - 3 MB NPU
t5_decoder VOICE_AI mixed_with_float Qualcomm® SA8775P 0.664 ms 0 - 10 MB NPU
t5_decoder VOICE_AI mixed_with_float Qualcomm® SA8775P 0.664 ms 0 - 10 MB NPU
t5_decoder VOICE_AI mixed_with_float Qualcomm® SA8775P 0.664 ms 0 - 10 MB NPU
t5_decoder VOICE_AI mixed_with_float Qualcomm® QCS9075 0.518 ms 1 - 3 MB NPU
t5_decoder VOICE_AI mixed_with_float Qualcomm® QCS8450 (Proxy) 0.585 ms 1 - 10 MB NPU
t5_decoder VOICE_AI mixed_with_float Qualcomm® SA7255P 0.991 ms 0 - 8 MB NPU
t5_decoder VOICE_AI mixed_with_float Qualcomm® SA8295P 0.79 ms 0 - 5 MB NPU
t5_decoder VOICE_AI mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 0.271 ms 0 - 9 MB NPU
t5_encoder VOICE_AI mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 0.486 ms 0 - 9 MB NPU
t5_encoder VOICE_AI mixed_with_float Snapdragon® 8 Elite Mobile 0.525 ms 0 - 13 MB NPU
t5_encoder VOICE_AI mixed_with_float Snapdragon® X2 Elite 0.652 ms 0 - 0 MB NPU
t5_encoder VOICE_AI mixed_with_float Snapdragon® X Elite 1.055 ms 0 - 0 MB NPU
t5_encoder VOICE_AI mixed_with_float Snapdragon® X Elite 1.055 ms 0 - 0 MB NPU
t5_encoder VOICE_AI mixed_with_float Snapdragon® 8 Gen 3 Mobile 0.639 ms 0 - 8 MB NPU
t5_encoder VOICE_AI mixed_with_float Qualcomm® QCS8275 (Proxy) 2.765 ms 0 - 8 MB NPU
t5_encoder VOICE_AI mixed_with_float Qualcomm® QCS8550 (Proxy) 0.888 ms 0 - 1 MB NPU
t5_encoder VOICE_AI mixed_with_float Qualcomm® SA8775P 1.249 ms 0 - 9 MB NPU
t5_encoder VOICE_AI mixed_with_float Qualcomm® SA8775P 1.249 ms 0 - 9 MB NPU
t5_encoder VOICE_AI mixed_with_float Qualcomm® SA8775P 1.249 ms 0 - 9 MB NPU
t5_encoder VOICE_AI mixed_with_float Qualcomm® QCS9075 1.117 ms 0 - 2 MB NPU
t5_encoder VOICE_AI mixed_with_float Qualcomm® QCS8450 (Proxy) 1.346 ms 0 - 9 MB NPU
t5_encoder VOICE_AI mixed_with_float Qualcomm® SA7255P 2.765 ms 0 - 8 MB NPU
t5_encoder VOICE_AI mixed_with_float Qualcomm® SA8295P 1.751 ms 0 - 6 MB NPU
t5_encoder VOICE_AI mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 0.525 ms 0 - 13 MB NPU

License

  • The license for the original implementation of MeloTTS-EN can be found here.

References

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