Detect Low Confidence Words in a Transcript

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import { AssemblyAI } from "assemblyai";
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const client = new AssemblyAI({
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  apiKey: process.env.ASSEMBLYAI_API_KEY,
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});

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const transcript = await client.transcripts.transcribe({
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  audio_url: "./sample.mp4",
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});

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let { id } = transcript;
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let { sentences } = await client.transcripts.sentences(id);

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let confidenceThreshold = 0.4;

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const sentencesWithLowConfidenceWords = (sentences, confidenceThreshold) => {
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  return sentences.filter((sentence) => {
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    const hasLowConfidenceWord = sentence.words.some(
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      (word) => word.confidence < confidenceThreshold
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    );
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    return hasLowConfidenceWord;
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  });
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};
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const filteredSentences = sentencesWithLowConfidenceWords(
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  sentences,
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  confidenceThreshold
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);

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const filterScores = filteredSentences.map((item) => {
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  return {
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    ...item,
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    words: item.words.filter((word) => word.confidence < confidenceThreshold),
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  };
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});

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//This function is optional but can be used to format the timestamps from milleseconds to HH:MM:SS
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const formatMilliseconds = (milliseconds) => {
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  // Calculate hours, minutes, and seconds
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  const hours = Math.floor(milliseconds / 3600000);
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  const minutes = Math.floor((milliseconds % 3600000) / 60000);
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  const seconds = Math.floor((milliseconds % 60000) / 1000);
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  // Ensure the values are displayed with leading zeros if needed
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  const formattedHours = hours.toString().padStart(2, "0");
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  const formattedMinutes = minutes.toString().padStart(2, "0");
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  const formattedSeconds = seconds.toString().padStart(2, "0");
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  return `${formattedHours}:${formattedMinutes}:${formattedSeconds}`;
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};
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//Format the final results to contain the sentence, low confidence words, timestamps, and confidence scores.
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const finalResults = filterScores.map((res) => {
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  return `The following sentence at timestamp ${formatMilliseconds(res.start)} contained low confidence words: ${res.text} \n  Low confidence word(s) from this sentence: ${res.words
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    .map((res) => {
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      return `${res.text}[score: ${res.confidence}]`;
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    })
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    .join(", ")}}`;
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});
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console.log(finalResults);