---
library_name: pytorch
license: other
tags:
- real_time
- android
pipeline_tag: text-to-audio

---

![](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/web-assets/model_demo.png)

# MeloTTS-ES: 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-ES found [here](https://github.com/myshell-ai/MeloTTS).
This repository contains pre-exported model files optimized for Qualcomm® devices. You can use the [Qualcomm® AI Hub Models](https://github.com/qualcomm/ai-hub-models/blob/main/src/qai_hub_models/models/melotts_es) library to export with custom configurations. More details on model performance across various devices, can be found [here](#performance-summary).

Qualcomm AI Hub Models uses [Qualcomm AI Hub Workbench](https://workbench.aihub.qualcomm.com) to compile, profile, and evaluate this model. [Sign up](https://myaccount.qualcomm.com/signup) 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](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_snapdragon_8_elite_gen5.zip)
| VOICE_AI | mixed_with_float | Snapdragon® X2 Elite | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_snapdragon_x2_elite.zip)
| VOICE_AI | mixed_with_float | Snapdragon® X Elite | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_snapdragon_x_elite.zip)
| VOICE_AI | mixed_with_float | Snapdragon® 8 Gen 3 Mobile | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_snapdragon_8gen3.zip)
| VOICE_AI | mixed_with_float | qualcomm-qcs8275 | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_qcs8275.zip)
| VOICE_AI | mixed_with_float | Qualcomm® QCS8550 (Proxy) | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_qcs8550_proxy.zip)
| VOICE_AI | mixed_with_float | Qualcomm® SA8775P | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_sa8775p.zip)
| VOICE_AI | mixed_with_float | Snapdragon® 8 Elite For Galaxy Mobile | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_snapdragon_8_elite_for_galaxy.zip)
| VOICE_AI | mixed_with_float | Qualcomm® SA7255P | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_sa7255p.zip)
| VOICE_AI | mixed_with_float | Qualcomm® SA8295P | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_sa8295p.zip)
| VOICE_AI | mixed_with_float | Qualcomm® QCS9075 | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_qcs9075.zip)
| VOICE_AI | mixed_with_float | Qualcomm® QCS8450 (Proxy) | QAIRT 2.45 | [Download](https://qaihub-public-assets.s3.us-west-2.amazonaws.com/qai-hub-models/models/melotts_es/releases/v0.51.0/melotts_es-voice_ai-mixed_with_float-qualcomm_qcs8450_proxy.zip)

For more device-specific assets and performance metrics, visit **[MeloTTS-ES on Qualcomm® AI Hub](https://aihub.qualcomm.com/models/melotts_es)**.


### Option 2: Export with Custom Configurations

Use the [Qualcomm® AI Hub Models](https://github.com/qualcomm/ai-hub-models/blob/main/src/qai_hub_models/models/melotts_es) 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-ES on GitHub](https://github.com/qualcomm/ai-hub-models/blob/main/src/qai_hub_models/models/melotts_es) for usage instructions.

## Model Details

**Model Type:** Model_use_case.audio_generation

**Model Stats:**
- Model checkpoint: myshell-ai/MeloTTS-Spanish
- Max decoded sequence length: 512 tokens
- Number of parameters (encoder): 8.36M
- Model size (encoder) (float): 32.0 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 (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
|---|---|---|---|---|---|---
| decoder | VOICE_AI | mixed_with_float | Snapdragon® 8 Elite Gen 5 Mobile | 43.603 ms | 0 - 10 MB | NPU
| decoder | VOICE_AI | mixed_with_float | Snapdragon® X2 Elite | 40.761 ms | 0 - 0 MB | NPU
| decoder | VOICE_AI | mixed_with_float | Snapdragon® X Elite | 82.709 ms | 0 - 0 MB | NPU
| decoder | VOICE_AI | mixed_with_float | Snapdragon® 8 Gen 3 Mobile | 61.145 ms | 0 - 8 MB | NPU
| decoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8275 (Proxy) | 134.528 ms | 0 - 9 MB | NPU
| decoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8550 (Proxy) | 85.581 ms | 0 - 2 MB | NPU
| decoder | VOICE_AI | mixed_with_float | Qualcomm® SA8775P | 83.845 ms | 0 - 9 MB | NPU
| decoder | VOICE_AI | mixed_with_float | Qualcomm® QCS9075 | 83.281 ms | 0 - 2 MB | NPU
| decoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8450 (Proxy) | 113.955 ms | 1 - 9 MB | NPU
| decoder | VOICE_AI | mixed_with_float | Qualcomm® SA7255P | 134.528 ms | 0 - 9 MB | NPU
| decoder | VOICE_AI | mixed_with_float | Qualcomm® SA8295P | 100.024 ms | 0 - 6 MB | NPU
| decoder | VOICE_AI | mixed_with_float | Snapdragon® 8 Elite For Galaxy Mobile | 47.962 ms | 0 - 9 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Snapdragon® 8 Elite Gen 5 Mobile | 19.517 ms | 4 - 13 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Snapdragon® X2 Elite | 20.57 ms | 4 - 4 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Snapdragon® X Elite | 32.975 ms | 4 - 4 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Snapdragon® 8 Gen 3 Mobile | 25.204 ms | 4 - 11 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8275 (Proxy) | 52.553 ms | 2 - 10 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8550 (Proxy) | 34.626 ms | 4 - 5 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Qualcomm® SA8775P | 36.213 ms | 2 - 11 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Qualcomm® QCS9075 | 35.679 ms | 4 - 9 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8450 (Proxy) | 44.062 ms | 4 - 13 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Qualcomm® SA7255P | 52.553 ms | 2 - 10 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Qualcomm® SA8295P | 40.778 ms | 0 - 5 MB | NPU
| encoder | VOICE_AI | mixed_with_float | Snapdragon® 8 Elite For Galaxy Mobile | 20.302 ms | 2 - 15 MB | NPU
| flow | VOICE_AI | mixed_with_float | Snapdragon® 8 Elite Gen 5 Mobile | 64.613 ms | 2 - 11 MB | NPU
| flow | VOICE_AI | mixed_with_float | Snapdragon® X2 Elite | 61.925 ms | 2 - 2 MB | NPU
| flow | VOICE_AI | mixed_with_float | Snapdragon® X Elite | 122.177 ms | 2 - 2 MB | NPU
| flow | VOICE_AI | mixed_with_float | Snapdragon® 8 Gen 3 Mobile | 90.362 ms | 2 - 10 MB | NPU
| flow | VOICE_AI | mixed_with_float | Qualcomm® QCS8275 (Proxy) | 235.037 ms | 2 - 11 MB | NPU
| flow | VOICE_AI | mixed_with_float | Qualcomm® QCS8550 (Proxy) | 123.207 ms | 3 - 5 MB | NPU
| flow | VOICE_AI | mixed_with_float | Qualcomm® SA8775P | 121.083 ms | 2 - 11 MB | NPU
| flow | VOICE_AI | mixed_with_float | Qualcomm® QCS9075 | 120.456 ms | 4 - 8 MB | NPU
| flow | VOICE_AI | mixed_with_float | Qualcomm® QCS8450 (Proxy) | 205.615 ms | 2 - 12 MB | NPU
| flow | VOICE_AI | mixed_with_float | Qualcomm® SA7255P | 235.037 ms | 2 - 11 MB | NPU
| flow | VOICE_AI | mixed_with_float | Qualcomm® SA8295P | 150.571 ms | 0 - 5 MB | NPU
| flow | VOICE_AI | mixed_with_float | Snapdragon® 8 Elite For Galaxy Mobile | 79.131 ms | 2 - 11 MB | NPU
| t5_decoder | VOICE_AI | mixed_with_float | Snapdragon® 8 Elite Gen 5 Mobile | 0.256 ms | 0 - 9 MB | NPU
| t5_decoder | VOICE_AI | mixed_with_float | Snapdragon® X2 Elite | 0.328 ms | 1 - 1 MB | NPU
| t5_decoder | VOICE_AI | mixed_with_float | Snapdragon® X Elite | 0.429 ms | 1 - 1 MB | NPU
| t5_decoder | VOICE_AI | mixed_with_float | Snapdragon® 8 Gen 3 Mobile | 0.305 ms | 0 - 8 MB | NPU
| t5_decoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8275 (Proxy) | 0.983 ms | 0 - 9 MB | NPU
| t5_decoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8550 (Proxy) | 0.401 ms | 1 - 2 MB | NPU
| t5_decoder | VOICE_AI | mixed_with_float | Qualcomm® SA8775P | 0.667 ms | 0 - 10 MB | NPU
| t5_decoder | VOICE_AI | mixed_with_float | Qualcomm® QCS9075 | 0.512 ms | 1 - 3 MB | NPU
| t5_decoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8450 (Proxy) | 0.578 ms | 1 - 10 MB | NPU
| t5_decoder | VOICE_AI | mixed_with_float | Qualcomm® SA7255P | 0.983 ms | 0 - 9 MB | NPU
| t5_decoder | VOICE_AI | mixed_with_float | Qualcomm® SA8295P | 0.796 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 | 0.482 ms | 0 - 10 MB | NPU
| t5_encoder | VOICE_AI | mixed_with_float | Snapdragon® X2 Elite | 0.654 ms | 0 - 0 MB | NPU
| t5_encoder | VOICE_AI | mixed_with_float | Snapdragon® X Elite | 1.052 ms | 0 - 0 MB | NPU
| t5_encoder | VOICE_AI | mixed_with_float | Snapdragon® 8 Gen 3 Mobile | 0.636 ms | 0 - 7 MB | NPU
| t5_encoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8275 (Proxy) | 2.839 ms | 0 - 9 MB | NPU
| t5_encoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8550 (Proxy) | 0.877 ms | 0 - 1 MB | NPU
| t5_encoder | VOICE_AI | mixed_with_float | Qualcomm® SA8775P | 1.275 ms | 0 - 9 MB | NPU
| t5_encoder | VOICE_AI | mixed_with_float | Qualcomm® QCS9075 | 1.118 ms | 0 - 2 MB | NPU
| t5_encoder | VOICE_AI | mixed_with_float | Qualcomm® QCS8450 (Proxy) | 1.358 ms | 0 - 9 MB | NPU
| t5_encoder | VOICE_AI | mixed_with_float | Qualcomm® SA7255P | 2.839 ms | 0 - 9 MB | NPU
| t5_encoder | VOICE_AI | mixed_with_float | Qualcomm® SA8295P | 1.721 ms | 0 - 5 MB | NPU
| t5_encoder | VOICE_AI | mixed_with_float | Snapdragon® 8 Elite For Galaxy Mobile | 0.523 ms | 0 - 9 MB | NPU

## License
* The license for the original implementation of MeloTTS-ES can be found
  [here](https://github.com/myshell-ai/MeloTTS/blob/main/LICENSE).

## References
* [MeloTTS High-quality Multi-lingual Multi-accent Text-to-Speech](https://github.com/myshell-ai/MeloTTS)
* [Source Model Implementation](https://github.com/myshell-ai/MeloTTS)

## Community
* Join [our AI Hub Slack community](https://aihub.qualcomm.com/community/slack) to collaborate, post questions and learn more about on-device AI.
* For questions or feedback please [reach out to us](mailto:ai-hub-support@qti.qualcomm.com).