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Overview

Transcribe audio using Deepgram’s speech recognition API.

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Key Features

  • Transcribe audio from a URL
  • Use the Nova 2 model for transcription

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Task code

trigger/deepgramTranscription.ts
import { createClient } from "@deepgram/sdk";
import { logger, task } from "@trigger.dev/sdk";

// Initialize the Deepgram client, using your Deepgram API key (you can find this in your Deepgram account settings).
const deepgram = createClient(process.env.DEEPGRAM_SECRET_KEY);

export const deepgramTranscription = task({
  id: "deepgram-transcribe-audio",
  run: async (payload: { audioUrl: string }) => {
    const { audioUrl } = payload;

    logger.log("Transcribing audio from URL", { audioUrl });

    // Transcribe the audio using Deepgram
    const { result, error } = await deepgram.listen.prerecorded.transcribeUrl(
      {
        url: audioUrl,
      },
      {
        model: "nova-2", // Use the Nova 2 model for the transcription
        smart_format: true, // Automatically format transcriptions to improve readability
        diarize: true, // Recognize speaker changes and assign a speaker to each word in the transcript
      }
    );

    if (error) {
      logger.error("Failed to transcribe audio", { error });
      throw error;
    }

    console.dir(result, { depth: null });

    // Extract the transcription from the result
    const transcription = result.results.channels[0].alternatives[0].paragraphs?.transcript;

    logger.log(`Generated transcription: ${transcription}`);

    return {
      result,
    };
  },
});

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Testing your task

To test this task in the dashboard, you can use the following payload: 
{
  "audioUrl": "https://dpgr.am/spacewalk.wav"
}