nvidia

conformer-ctc-asr

RUN ANYWHERE

Automatic speech recognition model that transcribes speech in lower case English with record-setting accuracy and performance

asr nvidia nim nvidia riva spanish streaming speech-to-text

API Reference

Getting Started

Riva uses gRPC APIs. Instructions below demonstrate usage of conformer-ctc-asr model using Python gRPC client.

Prerequisites

You will need a system with Git and Python 3+ installed.

Install Riva Python Client


pip install nvidia-riva-client

Download Python Client

Download Python client code by cloning Python Client Repository.


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

Run Python Client

Open a command terminal and execute below command to transcribe audio. Make sure you have a speech file in 16-bit Mono format in WAV/OGG/OPUS container. If you have generated the API key, it will be auto-populated in the command.


python python-clients/scripts/asr/transcribe_file.py \
    --server grpc.nvcf.nvidia.com:443 --use-ssl \
    --metadata function-id "58801c94-37cf-45ee-8911-4d851f095957" \
    --metadata "authorization" "Bearer $API_KEY_REQUIRED_IF_EXECUTING_OUTSIDE_NGC" \
    --language-code es-US \
    --input-file <path_to_audio_file>

Support for gRPC clients in other languages

Riva uses gRPC APIs. Proto files can be downloaded from Riva gRPC Proto files and compiled to target language using Protoc compiler. Example Riva clients in C++ and Python languages are provided below.

Python Client Repository
C++ Client Repository