---
title: PiperTTS-EN
canonical_url: "https://www.modelscope.cn/models/Qualcomm-AI-Hub/PiperTTS-EN"
md_url: "https://www.modelscope.cn/models/Qualcomm-AI-Hub/PiperTTS-EN.md"
repository: Qualcomm-AI-Hub/PiperTTS-EN
last_updated: 2026-10-16
license: mit
downloads: 0
stars: 0
tags:
  - real_time
  - android
---

# PiperTTS-EN

> PiperTTS-EN - Qualcomm-AI-Hub 在 ModelScope 开源的模型。PiperTTS-EN: Optimized for Qualcomm Devices

Qualcomm-AI-Hub/PiperTTS-EN 是 ModelScope 魔搭社区上的机器学习模型，采用 mit 许可。

- **Repository**: Qualcomm-AI-Hub/PiperTTS-EN
- **License**: mit
- **Tags**: real_time, android
- **Downloads**: 0
- **Stars**: 0
- **Last updated**: 2026-10-16

Source: https://www.modelscope.cn/models/Qualcomm-AI-Hub/PiperTTS-EN

---

![](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/web-assets/model_demo.png)

# PiperTTS-EN: Optimized for Qualcomm Devices

PiperTTS is a high-quality multi-lingual text-to-speech library.

This is based on the implementation of PiperTTS-EN found [here](https://github.com/rhasspy/piper).
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-cn/blob/main/src/qai_hub_models/models/pipertts_en) 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.cn) 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 | float | Snapdragon® X2 Elite | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_snapdragon_x2_elite.zip)
| VOICE_AI | float | Snapdragon® X Elite | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_snapdragon_x_elite.zip)
| VOICE_AI | float | Snapdragon® 8 Gen 3 Mobile | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_snapdragon_8gen3.zip)
| VOICE_AI | float | Snapdragon® 8 Gen 1 Mobile | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_snapdragon_8gen1.zip)
| VOICE_AI | float | Qualcomm® Dragonwing™ IQ-8275 | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_qcs8275.zip)
| VOICE_AI | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_qcs8550_proxy.zip)
| VOICE_AI | float | Qualcomm® SA8775P | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_sa8775p.zip)
| VOICE_AI | float | Qualcomm® Dragonwing™ IQ-9075 | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_qcs9075.zip)
| VOICE_AI | float | Qualcomm® SA7255P | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_sa7255p.zip)
| VOICE_AI | float | Qualcomm® SA8295P | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_sa8295p.zip)
| VOICE_AI | float | Snapdragon® 8 Elite Mobile | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_snapdragon_8_elite_for_galaxy.zip)
| VOICE_AI | float | Snapdragon® 8 Elite Gen 5 Mobile | QAIRT 2.45 | [Download](https://china-qaihub-public-assets.s3.cn-northwest-1.amazonaws.com.cn/qai-hub-models/models/pipertts_en/releases/v0.62.1/pipertts_en-voice_ai-float-qualcomm_snapdragon_8_elite_gen5_for_galaxy.zip)

For more device-specific assets and performance metrics, visit **[PiperTTS-EN on Qualcomm® AI Hub](https://aihub.qualcomm.cn/models/pipertts_en)**.


### Option 2: Export with Custom Configurations

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

## Model Details

**Model Type:** Model_use_case.audio_generation

**Model Stats:**
- Max decoded sequence length: 64 tokens
- Model checkpoint: rhasspy/piper-checkpoints
- Model size (decoder) (float): 6.37 MB
- Model size (encoder) (float): 28.7 MB
- Model size (flow) (float): 28.2 MB
- Model size (sdp) (float): 6.61 KB
- Model size (t5_decoder) (float): 21.8 MB
- Model size (t5_encoder) (float): 57.5 MB
- Number of parameters (decoder): 1.66M
- Number of parameters (encoder): 7.51M
- Number of parameters (flow): 7.39M
- Number of parameters (sdp): 1.04K
- Number of parameters (t5_decoder): 5.72M
- Number of parameters (t5_encoder): 15.1M

## Performance Summary
| Model | Runtime | Precision | Chipset | Inference Time (ms) | Peak Memory Range (MB) | Primary Compute Unit
|---|---|---|---|---|---|---
| charsiu_decoder | VOICE_AI | float | Snapdragon® X2 Elite | 0.364 ms | 1 - 1 MB | NPU
| charsiu_decoder | VOICE_AI | float | Snapdragon® X Elite | 0.432 ms | 1 - 1 MB | NPU
| charsiu_decoder | VOICE_AI | float | Snapdragon® 8 Gen 3 Mobile | 0.301 ms | 0 - 8 MB | NPU
| charsiu_decoder | VOICE_AI | float | Snapdragon® 8 Gen 1 Mobile | 0.579 ms | 1 - 10 MB | NPU
| charsiu_decoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-8275 | 0.56 ms | 1 - 3 MB | NPU
| charsiu_decoder | VOICE_AI | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 0.401 ms | 0 - 2 MB | NPU
| charsiu_decoder | VOICE_AI | float | Qualcomm® SA8775P | 0.646 ms | 0 - 9 MB | NPU
| charsiu_decoder | VOICE_AI | float | Qualcomm® SA8650P | 0.646 ms | 0 - 9 MB | NPU
| charsiu_decoder | VOICE_AI | float | Qualcomm® SA8255P | 0.646 ms | 0 - 9 MB | NPU
| charsiu_decoder | VOICE_AI | float | Qualcomm® QCS8450 | 0.579 ms | 1 - 10 MB | NPU
| charsiu_decoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-9075 | 0.515 ms | 1 - 3 MB | NPU
| charsiu_decoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-X7181 | 0.432 ms | 1 - 1 MB | NPU
| charsiu_decoder | VOICE_AI | float | Qualcomm® Dragonwing™ Q-8750 | 0.27 ms | 0 - 9 MB | NPU
| charsiu_decoder | VOICE_AI | float | Qualcomm® SA7255P | 0.956 ms | 0 - 9 MB | NPU
| charsiu_decoder | VOICE_AI | float | Qualcomm® SA8295P | 0.792 ms | 0 - 5 MB | NPU
| charsiu_decoder | VOICE_AI | float | Snapdragon® 8 Elite Mobile | 0.27 ms | 0 - 9 MB | NPU
| charsiu_decoder | VOICE_AI | float | Snapdragon® 8 Elite Gen 5 Mobile | 0.259 ms | 0 - 9 MB | NPU
| charsiu_encoder | VOICE_AI | float | Snapdragon® X2 Elite | 0.639 ms | 0 - 0 MB | NPU
| charsiu_encoder | VOICE_AI | float | Snapdragon® X Elite | 1.039 ms | 0 - 0 MB | NPU
| charsiu_encoder | VOICE_AI | float | Snapdragon® 8 Gen 3 Mobile | 0.64 ms | 0 - 8 MB | NPU
| charsiu_encoder | VOICE_AI | float | Snapdragon® 8 Gen 1 Mobile | 1.333 ms | 0 - 10 MB | NPU
| charsiu_encoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-8275 | 1.082 ms | 0 - 2 MB | NPU
| charsiu_encoder | VOICE_AI | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 0.899 ms | 0 - 2 MB | NPU
| charsiu_encoder | VOICE_AI | float | Qualcomm® SA8775P | 1.256 ms | 0 - 10 MB | NPU
| charsiu_encoder | VOICE_AI | float | Qualcomm® SA8650P | 1.256 ms | 0 - 10 MB | NPU
| charsiu_encoder | VOICE_AI | float | Qualcomm® SA8255P | 1.256 ms | 0 - 10 MB | NPU
| charsiu_encoder | VOICE_AI | float | Qualcomm® QCS8450 | 1.333 ms | 0 - 10 MB | NPU
| charsiu_encoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-9075 | 1.124 ms | 0 - 2 MB | NPU
| charsiu_encoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-X7181 | 1.039 ms | 0 - 0 MB | NPU
| charsiu_encoder | VOICE_AI | float | Qualcomm® Dragonwing™ Q-8750 | 0.527 ms | 0 - 9 MB | NPU
| charsiu_encoder | VOICE_AI | float | Qualcomm® SA7255P | 2.78 ms | 0 - 9 MB | NPU
| charsiu_encoder | VOICE_AI | float | Qualcomm® SA8295P | 1.748 ms | 0 - 5 MB | NPU
| charsiu_encoder | VOICE_AI | float | Snapdragon® 8 Elite Mobile | 0.527 ms | 0 - 9 MB | NPU
| charsiu_encoder | VOICE_AI | float | Snapdragon® 8 Elite Gen 5 Mobile | 0.487 ms | 0 - 8 MB | NPU
| decoder | VOICE_AI | float | Snapdragon® X2 Elite | 1.806 ms | 0 - 0 MB | NPU
| decoder | VOICE_AI | float | Snapdragon® X Elite | 3.072 ms | 0 - 0 MB | NPU
| decoder | VOICE_AI | float | Snapdragon® 8 Gen 3 Mobile | 2.177 ms | 0 - 7 MB | NPU
| decoder | VOICE_AI | float | Snapdragon® 8 Gen 1 Mobile | 4.356 ms | 0 - 9 MB | NPU
| decoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-8275 | 3.424 ms | 0 - 2 MB | NPU
| decoder | VOICE_AI | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 3.013 ms | 0 - 2 MB | NPU
| decoder | VOICE_AI | float | Qualcomm® SA8775P | 3.489 ms | 0 - 9 MB | NPU
| decoder | VOICE_AI | float | Qualcomm® SA8650P | 3.489 ms | 0 - 9 MB | NPU
| decoder | VOICE_AI | float | Qualcomm® SA8255P | 3.489 ms | 0 - 9 MB | NPU
| decoder | VOICE_AI | float | Qualcomm® QCS8450 | 4.356 ms | 0 - 9 MB | NPU
| decoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-9075 | 3.334 ms | 0 - 2 MB | NPU
| decoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-X7181 | 3.072 ms | 0 - 0 MB | NPU
| decoder | VOICE_AI | float | Qualcomm® Dragonwing™ Q-8750 | 1.901 ms | 0 - 8 MB | NPU
| decoder | VOICE_AI | float | Qualcomm® SA7255P | 8.084 ms | 0 - 9 MB | NPU
| decoder | VOICE_AI | float | Qualcomm® SA8295P | 3.969 ms | 0 - 5 MB | NPU
| decoder | VOICE_AI | float | Snapdragon® 8 Elite Mobile | 1.901 ms | 0 - 8 MB | NPU
| decoder | VOICE_AI | float | Snapdragon® 8 Elite Gen 5 Mobile | 1.822 ms | 0 - 12 MB | NPU
| encoder | VOICE_AI | float | Snapdragon® X2 Elite | 18.634 ms | 0 - 0 MB | NPU
| encoder | VOICE_AI | float | Snapdragon® X Elite | 29.31 ms | 0 - 0 MB | NPU
| encoder | VOICE_AI | float | Snapdragon® 8 Gen 3 Mobile | 23.761 ms | 0 - 8 MB | NPU
| encoder | VOICE_AI | float | Snapdragon® 8 Gen 1 Mobile | 39.825 ms | 0 - 9 MB | NPU
| encoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-8275 | 29.843 ms | 0 - 3 MB | NPU
| encoder | VOICE_AI | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 30.424 ms | 0 - 2 MB | NPU
| encoder | VOICE_AI | float | Qualcomm® SA8775P | 32.946 ms | 0 - 9 MB | NPU
| encoder | VOICE_AI | float | Qualcomm® SA8650P | 32.946 ms | 0 - 9 MB | NPU
| encoder | VOICE_AI | float | Qualcomm® SA8255P | 32.946 ms | 0 - 9 MB | NPU
| encoder | VOICE_AI | float | Qualcomm® QCS8450 | 39.825 ms | 0 - 9 MB | NPU
| encoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-9075 | 32.269 ms | 2 - 5 MB | NPU
| encoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-X7181 | 29.31 ms | 0 - 0 MB | NPU
| encoder | VOICE_AI | float | Qualcomm® Dragonwing™ Q-8750 | 18.778 ms | 0 - 13 MB | NPU
| encoder | VOICE_AI | float | Qualcomm® SA7255P | 47.571 ms | 0 - 9 MB | NPU
| encoder | VOICE_AI | float | Qualcomm® SA8295P | 35.188 ms | 0 - 6 MB | NPU
| encoder | VOICE_AI | float | Snapdragon® 8 Elite Mobile | 18.778 ms | 0 - 13 MB | NPU
| encoder | VOICE_AI | float | Snapdragon® 8 Elite Gen 5 Mobile | 17.047 ms | 0 - 8 MB | NPU
| flow | VOICE_AI | float | Snapdragon® X2 Elite | 9.642 ms | 4 - 4 MB | NPU
| flow | VOICE_AI | float | Snapdragon® X Elite | 15.923 ms | 4 - 4 MB | NPU
| flow | VOICE_AI | float | Snapdragon® 8 Gen 3 Mobile | 11.111 ms | 4 - 12 MB | NPU
| flow | VOICE_AI | float | Snapdragon® 8 Gen 1 Mobile | 18.268 ms | 4 - 14 MB | NPU
| flow | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-8275 | 17.32 ms | 4 - 11 MB | NPU
| flow | VOICE_AI | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 15.034 ms | 4 - 5 MB | NPU
| flow | VOICE_AI | float | Qualcomm® SA8775P | 17.291 ms | 1 - 10 MB | NPU
| flow | VOICE_AI | float | Qualcomm® SA8650P | 17.291 ms | 1 - 10 MB | NPU
| flow | VOICE_AI | float | Qualcomm® SA8255P | 17.291 ms | 1 - 10 MB | NPU
| flow | VOICE_AI | float | Qualcomm® QCS8450 | 18.268 ms | 4 - 14 MB | NPU
| flow | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-9075 | 17.37 ms | 4 - 10 MB | NPU
| flow | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-X7181 | 15.923 ms | 4 - 4 MB | NPU
| flow | VOICE_AI | float | Qualcomm® Dragonwing™ Q-8750 | 8.918 ms | 3 - 11 MB | NPU
| flow | VOICE_AI | float | Qualcomm® SA7255P | 39.995 ms | 1 - 9 MB | NPU
| flow | VOICE_AI | float | Qualcomm® SA8295P | 18.811 ms | 0 - 5 MB | NPU
| flow | VOICE_AI | float | Snapdragon® 8 Elite Mobile | 8.918 ms | 3 - 11 MB | NPU
| flow | VOICE_AI | float | Snapdragon® 8 Elite Gen 5 Mobile | 8.971 ms | 3 - 11 MB | NPU
| sdp | VOICE_AI | float | Snapdragon® X2 Elite | 7.153 ms | 0 - 0 MB | NPU
| sdp | VOICE_AI | float | Snapdragon® X Elite | 11.26 ms | 0 - 0 MB | NPU
| sdp | VOICE_AI | float | Snapdragon® 8 Gen 3 Mobile | 7.74 ms | 0 - 8 MB | NPU
| sdp | VOICE_AI | float | Snapdragon® 8 Gen 1 Mobile | 11.322 ms | 0 - 10 MB | NPU
| sdp | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-8275 | 10.426 ms | 0 - 3 MB | NPU
| sdp | VOICE_AI | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 10.462 ms | 0 - 2 MB | NPU
| sdp | VOICE_AI | float | Qualcomm® SA8775P | 11.236 ms | 0 - 6 MB | NPU
| sdp | VOICE_AI | float | Qualcomm® SA8650P | 11.236 ms | 0 - 6 MB | NPU
| sdp | VOICE_AI | float | Qualcomm® SA8255P | 11.236 ms | 0 - 6 MB | NPU
| sdp | VOICE_AI | float | Qualcomm® QCS8450 | 11.322 ms | 0 - 10 MB | NPU
| sdp | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-9075 | 11.059 ms | 2 - 4 MB | NPU
| sdp | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-X7181 | 11.26 ms | 0 - 0 MB | NPU
| sdp | VOICE_AI | float | Qualcomm® Dragonwing™ Q-8750 | 6.98 ms | 0 - 9 MB | NPU
| sdp | VOICE_AI | float | Qualcomm® SA7255P | 20.717 ms | 0 - 9 MB | NPU
| sdp | VOICE_AI | float | Qualcomm® SA8295P | 12.711 ms | 0 - 5 MB | NPU
| sdp | VOICE_AI | float | Snapdragon® 8 Elite Mobile | 6.98 ms | 0 - 9 MB | NPU
| sdp | VOICE_AI | float | Snapdragon® 8 Elite Gen 5 Mobile | 6.613 ms | 0 - 9 MB | NPU

## License
* The license for the original implementation of PiperTTS-EN can be found
  [here](https://github.com/rhasspy/piper/blob/master/LICENSE.md).

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

## Community
* For questions or feedback, chat with our engineers in [Qualcomm® AI Hub Workbench](https://workbench.aihub.qualcomm.cn).