Add voice to your product in 3 lines.

import os
import pvporcupine, pvrhino
import boto3

PICO_KEY = os.environ["PICOVOICE_ACCESS_KEY"]
porcupine = pvporcupine.create(
    access_key=PICO_KEY,
    keyword_paths=["./doorbell_en_mac_v2_2_0.ppn"],
)
rhino = pvrhino.create(
    access_key=PICO_KEY,
    context_path="./commands_en_mac_v2_2_0.rhn",
)

lex = boto3.client("lex-runtime-v2",
                    aws_access_key_id=os.environ["AWS_KEY"],
                    aws_secret_access_key=os.environ["AWS_SECRET"])

def classify(audio_pcm):
    if porcupine.process(audio_pcm) >= 0:
        return "doorbell"
    inference = rhino.process(audio_pcm)
    if inference.is_finalized:
        return inference.intent
    # Fall back to AWS Lex for OOV:
    resp = lex.recognize_utterance(
        botId=BOT_ID, botAliasId=ALIAS_ID,
        localeId="en_US", sessionId=SID,
        requestContentType="audio/x-l16; rate=16000",
        inputStream=audio_pcm,
    )
    return resp["interpretations"][0]["intent"]["name"]

# … plus error handling, API keys per env, billing dashboards in two places,
# .ppn / .rhn per-device licensing, AWS per-request fees, no adaptation, etc.