wehub-resource-syncFunASR + LangChain Integration
Use FunASR as a speech-to-text tool in your LangChain agents. Since FunASR exposes an OpenAI-compatible API, integration is straightforward.
Setup
# Start FunASR server
pip install torch torchaudio
pip install funasr vllm fastapi uvicorn python-multipart
funasr-server --device cuda
# Install LangChain
pip install langchain langchain-openai
As a LangChain Tool
from langchain.tools import tool
from openai import OpenAI
asr_client = OpenAI(base_url="http://localhost:8000/v1", api_key="unused")
@tool
def speech_to_text(audio_path: str) -> str:
"""Transcribe an audio file to text using local FunASR.
Supports wav, mp3, flac. Returns transcribed text with speaker IDs."""
result = asr_client.audio.transcriptions.create(
model="fun-asr-nano",
file=open(audio_path, "rb"),
response_format="verbose_json"
)
return result.text
# Use with any LangChain agent
from langchain_openai import ChatOpenAI
from langchain.agents import AgentExecutor, create_tool_calling_agent
from langchain_core.prompts import ChatPromptTemplate
llm = ChatOpenAI(model="gpt-4o")
tools = [speech_to_text]
prompt = ChatPromptTemplate.from_messages([
("system", "You are a helpful assistant that can transcribe audio files."),
("human", "{input}"),
("placeholder", "{agent_scratchpad}"),
])
agent = create_tool_calling_agent(llm, tools, prompt)
executor = AgentExecutor(agent=agent, tools=tools)
result = executor.invoke({"input": "Please transcribe meeting.wav"})
With Dify / AutoGen / CrewAI
Any framework supporting OpenAI audio API connects directly:
from openai import OpenAI
client = OpenAI(
base_url="http://localhost:8000/v1", # FunASR server
api_key="unused"
)
result = client.audio.transcriptions.create(
model="fun-asr-nano",
file=open("audio.wav", "rb")
)
Features
- 50+ languages (Chinese dialects, English, Japanese, Korean...)
- Speaker diarization (
spk=true) - Word-level timestamps (
response_format="verbose_json") - Hotword boosting
- 170x realtime, fully local, MIT license