ThatProject/ESP32_MICROPHONE/ESP32_INMP441_SPEECH_TO_TEXT/NodejsServer/speechAPItest.js

async function main() {
	// Imports the Google Cloud client library
	const speech = require("@google-cloud/speech");
	const fs = require("fs");

	// Creates a client
	const client = new speech.SpeechClient();

	// The name of the audio file to transcribe
	const fileName = "./resources/recording.wav";

	// Reads a local audio file and converts it to base64
	const file = fs.readFileSync(fileName);
	const audioBytes = file.toString("base64");

	// The audio file's encoding, sample rate in hertz, and BCP-47 language code
	const audio = {
		content: audioBytes
	};
	const config = {
		encoding: "LINEAR16",
		sampleRateHertz: 16000,
		languageCode: "en-US"
	};
	const request = {
		audio: audio,
		config: config
	};

	// Detects speech in the audio file
	const [response] = await client.recognize(request);
	const transcription = response.results.map((result) => result.alternatives[0].transcript).join("\n");
	console.log(`Transcription: ${transcription}`);
}
main().catch(console.error);