Skip to main content
NVIDIA
Explore
Models
Skills
Blueprints
GPUs
Docs
Help Center
Getting Started
  1. Create and verify your account to unlock full access to NVIDIA NIM APIs.
ResourcesDeveloper ForumsContact Support
FAQs
  • Terms of Use
    Privacy Policy
    Your Privacy Choices
    Contact

    Copyright © 2026 NVIDIA Corporation

    NVIDIA

    fastpitch-hifigan-tts

    DeprecatedDownloadable

    Expressive and engaging English voices for Q&A assistants, brand ambassadors, and service robots

    • Nvidia nim
    • Text-to-Speech
    Get API Key
    API ReferenceAPI Reference
    Accelerated by DGX Cloud
    Deploying your application in production? Get started with a 90-day evaluation of NVIDIA AI Enterprise

    Follow the steps below to download and run the NVIDIA NIM inference microservice for this model on your infrastructure of choice.

    Step 1
    Generate API Key

    Step 2
    Pull and Run the NIM

    $ docker login nvcr.io
    Username: $oauthtoken
    Password: <PASTE_API_KEY_HERE>
    

    Refer to Supported Models for full list of models.

    export NGC_API_KEY=<PASTE_API_KEY_HERE>
    
    export CONTAINER_NAME=fastpitch-hifigan-tts
    docker run -it --rm --name=$CONTAINER_NAME \
      --runtime=nvidia \
      --gpus '"device=0"' \
      --shm-size=8GB \
      -e NGC_API_KEY=$NGC_API_KEY \
      -e NIM_HTTP_API_PORT=9000 \
      -e NIM_GRPC_API_PORT=50051 \
      -p 9000:9000 \
      -p 50051:50051 \
      -e NIM_TAGS_SELECTOR=name=fastpitch-hifigan-en-us \
      nvcr.io/nim/nvidia/riva-tts:1.3.0
    
    It may take a up to 30 minutes depending on your network speed, for the container to be ready and start accepting requests from the time the docker container is started.
    

    Step 3
    Test the NIM

    Open a new terminal and run following command to check if the service is ready to handle inference requests

    curl -X 'GET' 'http://localhost:9000/v1/health/ready'
    

    If the service is ready, you get a response similar to the following.

    {"ready":true}
    

    Install the Riva Python client package

    sudo apt-get install python3-pip
    pip install nvidia-riva-client
    

    Download Riva sample clients

    git clone https://github.com/nvidia-riva/python-clients.git
    

    Run Text to Speech inference

    python3 python-clients/scripts/tts/talk.py --server 0.0.0.0:50051 --text "Hello, this is a speech synthesizer." --language-code en-US --output output.wav
    

    On running the above command, the synthesized audio file named output.wav will be created.

    For more details on getting started with this NIM, visit the NVIDIA NIM Docs.