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MeloTTS-EN

Text-to-Audio
PyTorch
real_time
android
Model card Files
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 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
PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile QAIRT 2.42, ONNX Runtime 1.24.1 Download
PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X2 Elite QAIRT 2.42, ONNX Runtime 1.24.1 Download
PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X Elite QAIRT 2.42, ONNX Runtime 1.24.1 Download
PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Gen 3 Mobile QAIRT 2.42, ONNX Runtime 1.24.1 Download
PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS8550 (Proxy) QAIRT 2.42, ONNX Runtime 1.24.1 Download
PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile QAIRT 2.42, ONNX Runtime 1.24.1 Download
PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS9075 QAIRT 2.42, ONNX Runtime 1.24.1 Download
QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile QAIRT 2.43 Download
QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X2 Elite QAIRT 2.43 Download
QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X Elite QAIRT 2.43 Download
QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Gen 3 Mobile QAIRT 2.43 Download
QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8550 (Proxy) QAIRT 2.43 Download
QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8775P QAIRT 2.43 Download
QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile QAIRT 2.43 Download
QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA7255P QAIRT 2.43 Download
QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8295P QAIRT 2.43 Download
QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS9075 QAIRT 2.43 Download
QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8450 (Proxy) QAIRT 2.43 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_EN): 8.30M
  • Model size (Encoder_EN) (float): 31.8 MB
  • Number of parameters (Flow_EN): 20.1M
  • Model size (Flow_EN) (float): 76.9 MB
  • Number of parameters (Decoder_EN): 14.5M
  • Model size (Decoder_EN) (float): 55.5 MB
  • Number of parameters (BertWrapper_EN): 94.5M
  • Model size (BertWrapper_EN) (float): 360 MB
  • Number of parameters (T5Encoder_EN): 15.1M
  • Model size (T5Encoder_EN) (float): 57.5 MB
  • Number of parameters (T5Decoder_EN): 5.72M
  • Model size (T5Decoder_EN) (float): 21.8 MB

Performance Summary

Model Runtime Precision Chipset Inference Time (ms) Peak Memory Range (MB) Primary Compute Unit
BertWrapper_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 2.709 ms 0 - 10 MB NPU
BertWrapper_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X2 Elite 3.071 ms 183 - 183 MB NPU
BertWrapper_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X Elite 7.31 ms 182 - 182 MB NPU
BertWrapper_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Gen 3 Mobile 4.721 ms 1 - 8 MB NPU
BertWrapper_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS8550 (Proxy) 6.77 ms 0 - 194 MB NPU
BertWrapper_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS9075 8.895 ms 1 - 4 MB NPU
BertWrapper_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 3.466 ms 0 - 11 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 2.723 ms 0 - 10 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X2 Elite 3.3 ms 0 - 0 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X Elite 7.302 ms 0 - 0 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Gen 3 Mobile 4.723 ms 0 - 7 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8275 (Proxy) 30.052 ms 0 - 7 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8550 (Proxy) 6.755 ms 0 - 2 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8775P 9.145 ms 0 - 9 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS9075 8.833 ms 0 - 2 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8450 (Proxy) 10.241 ms 0 - 8 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA7255P 30.052 ms 0 - 7 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8295P 11.318 ms 0 - 5 MB NPU
BertWrapper_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 3.456 ms 0 - 13 MB NPU
Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 40.892 ms 0 - 10 MB NPU
Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X2 Elite 38.782 ms 20 - 20 MB NPU
Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X Elite 76.502 ms 18 - 18 MB NPU
Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Gen 3 Mobile 57.269 ms 1 - 7 MB NPU
Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS8550 (Proxy) 77.906 ms 0 - 21 MB NPU
Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS9075 76.796 ms 0 - 3 MB NPU
Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 46.903 ms 0 - 12 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 41.092 ms 0 - 10 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X2 Elite 39.044 ms 0 - 0 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X Elite 76.915 ms 0 - 0 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Gen 3 Mobile 57.623 ms 0 - 7 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8275 (Proxy) 127.292 ms 0 - 8 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8550 (Proxy) 78.393 ms 1 - 3 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8775P 77.489 ms 0 - 9 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS9075 76.997 ms 0 - 2 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8450 (Proxy) 106.342 ms 1 - 9 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA7255P 127.292 ms 0 - 8 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8295P 92.974 ms 0 - 6 MB NPU
Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 47.232 ms 0 - 13 MB NPU
Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 17.354 ms 4 - 14 MB NPU
Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X2 Elite 19.562 ms 14 - 14 MB NPU
Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X Elite 33.133 ms 13 - 13 MB NPU
Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Gen 3 Mobile 24.685 ms 4 - 11 MB NPU
Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS8550 (Proxy) 34.528 ms 0 - 17 MB NPU
Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS9075 39.323 ms 4 - 6 MB NPU
Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 20.771 ms 4 - 11 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 17.784 ms 4 - 13 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X2 Elite 20.003 ms 4 - 4 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X Elite 32.9 ms 4 - 4 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Gen 3 Mobile 25.014 ms 4 - 11 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8275 (Proxy) 77.635 ms 2 - 10 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8550 (Proxy) 33.435 ms 4 - 5 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8775P 39.389 ms 2 - 7 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS9075 39.394 ms 4 - 9 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8450 (Proxy) 48.8 ms 4 - 13 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA7255P 77.635 ms 2 - 10 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8295P 44.093 ms 0 - 5 MB NPU
Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 20.585 ms 2 - 11 MB NPU
Flow_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 90.932 ms 6 - 17 MB NPU
Flow_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X2 Elite 84.08 ms 31 - 31 MB NPU
Flow_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X Elite 148.151 ms 30 - 30 MB NPU
Flow_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Gen 3 Mobile 119.05 ms 6 - 13 MB NPU
Flow_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS8550 (Proxy) 158.475 ms 0 - 37 MB NPU
Flow_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS9075 149.902 ms 4 - 10 MB NPU
Flow_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 101.49 ms 3 - 11 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 91.212 ms 4 - 14 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X2 Elite 84.738 ms 4 - 4 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X Elite 147.059 ms 4 - 4 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Gen 3 Mobile 120.85 ms 4 - 12 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8275 (Proxy) 278.993 ms 1 - 10 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8550 (Proxy) 158.824 ms 4 - 7 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8775P 150.697 ms 1 - 10 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS9075 149.571 ms 4 - 10 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8450 (Proxy) 169.968 ms 4 - 13 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA7255P 278.993 ms 1 - 10 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8295P 188.846 ms 1 - 6 MB NPU
Flow_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 100.726 ms 1 - 10 MB NPU
T5Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 0.269 ms 0 - 10 MB NPU
T5Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X2 Elite 0.257 ms 10 - 10 MB NPU
T5Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X Elite 0.485 ms 10 - 10 MB NPU
T5Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Gen 3 Mobile 0.326 ms 0 - 7 MB NPU
T5Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS8550 (Proxy) 0.437 ms 0 - 12 MB NPU
T5Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS9075 0.565 ms 1 - 4 MB NPU
T5Decoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 0.288 ms 0 - 7 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 0.257 ms 0 - 10 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X2 Elite 0.363 ms 1 - 1 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X Elite 0.451 ms 1 - 1 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Gen 3 Mobile 0.31 ms 0 - 7 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8275 (Proxy) 0.98 ms 0 - 8 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8550 (Proxy) 0.402 ms 1 - 3 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8775P 0.661 ms 0 - 5 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS9075 0.511 ms 1 - 3 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8450 (Proxy) 0.586 ms 1 - 9 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA7255P 0.98 ms 0 - 8 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8295P 0.806 ms 0 - 5 MB NPU
T5Decoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 0.28 ms 0 - 13 MB NPU
T5Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 0.506 ms 0 - 10 MB NPU
T5Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X2 Elite 0.464 ms 29 - 29 MB NPU
T5Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® X Elite 1.031 ms 29 - 29 MB NPU
T5Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Gen 3 Mobile 0.607 ms 0 - 7 MB NPU
T5Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS8550 (Proxy) 0.855 ms 0 - 33 MB NPU
T5Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Qualcomm® QCS9075 1.13 ms 0 - 3 MB NPU
T5Encoder_EN PRECOMPILED_QNN_ONNX mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 0.54 ms 0 - 11 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite Gen 5 Mobile 0.487 ms 0 - 10 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X2 Elite 0.685 ms 0 - 0 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® X Elite 0.995 ms 0 - 0 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Gen 3 Mobile 0.598 ms 0 - 7 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8275 (Proxy) 2.749 ms 0 - 8 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8550 (Proxy) 0.823 ms 0 - 1 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8775P 1.231 ms 0 - 9 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS9075 1.074 ms 0 - 2 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® QCS8450 (Proxy) 1.337 ms 0 - 9 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA7255P 2.749 ms 0 - 8 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Qualcomm® SA8295P 1.712 ms 0 - 5 MB NPU
T5Encoder_EN QNN_CONTEXT_BINARY mixed_with_float Snapdragon® 8 Elite For Galaxy Mobile 0.51 ms 0 - 9 MB NPU

License

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

References

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