Files
vocero-client/speech_to_speech/STT/paraformer_handler.py
T
2026-08-26 17:42:00 -04:00

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2.6 KiB
Python

from __future__ import annotations
import logging
from typing import Any, Iterator
import numpy as np
import torch
from rich.console import Console
from speech_to_speech.pipeline.handler_types import STTIn, STTOut
from speech_to_speech.pipeline.messages import PartialTranscription, Transcription
from speech_to_speech.STT.base_stt_handler import BaseSTTHandler
logging.basicConfig(
format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
)
logger = logging.getLogger(__name__)
console = Console()
class ParaformerSTTHandler(BaseSTTHandler):
"""
Handles the Speech To Text generation using a Paraformer model.
The default for this model is set to Chinese.
This model was contributed by @wuhongsheng.
"""
def setup(
self,
model_name: str = "paraformer-zh",
device: str = "cuda",
gen_kwargs: dict[str, Any] = {},
) -> None:
print(model_name)
if len(model_name.split("/")) > 1:
model_name = model_name.split("/")[-1]
self.device = device
try:
from funasr import AutoModel
except ModuleNotFoundError as exc:
raise ModuleNotFoundError(
"Paraformer STT requires the optional 'paraformer' extra. "
"Install it with `pip install speech-to-speech[paraformer]`."
) from exc
self.model = AutoModel(model=model_name, device=device)
self.warmup()
def warmup(self) -> None:
logger.info(f"Warming up {self.__class__.__name__}")
# 2 warmup steps for no compile or compile mode with CUDA graphs capture
n_steps = 1
dummy_input = np.array([0] * 512, dtype=np.float32)
for _ in range(n_steps):
_ = self.model.generate(dummy_input)[0]["text"].strip().replace(" ", "")
def process(self, vad_audio: STTIn) -> Iterator[STTOut]:
logger.debug("infering paraformer...")
pred_text = self.model.generate(vad_audio.audio)[0]["text"].strip().replace(" ", "")
torch.mps.empty_cache()
logger.debug("finished paraformer inference")
console.print(f"[yellow]USER: {pred_text}")
if vad_audio.mode == "progressive":
yield PartialTranscription(
text=pred_text,
turn_id=vad_audio.turn_id,
turn_revision=vad_audio.turn_revision,
)
else:
yield Transcription(
text=pred_text,
turn_id=vad_audio.turn_id,
turn_revision=vad_audio.turn_revision,
speech_stopped_at_s=vad_audio.created_at_s,
)