🔬 Audio to executive brief: Transcribe & analyze with AssemblyAI and GPT-4

⚡ 476 views · 🔬 Document Extraction & Analysis

Description

🎙️ Audio-to-Insights Workflow (Form Upload + Google Drive Link)

Description

This workflow enables seamless speech-to-text transcription, AI-powered summarization, sentiment analysis, and automated email delivery.
It supports two different input modes:

• Form Upload (Local File)
• Form Submission (Google Drive Link)

How it Works

1. Input

   • Form 1: Upload an audio file (e.g., .mp3,.wav,.mp4)
   • Form 2: Submit a Google Drive link

2. File Handling

   • Local uploads go directly to AssemblyAI.
   • Drive links are parsed → File ID extracted → File fetched → Sent to AssemblyAI.

3. Transcription

   • AssemblyAI generates transcript text with punctuation and highlights.
   • Workflow loops with Wait + If until transcript status = completed.

4. AI Analysis

   • Transcript is passed to OpenAI.
   • Generates a structured output including:
     • Executive summary
     • Sentiment label & score
     • Key points
     • Action items
     • Notable quotes
     • Topics

5. Email Delivery

   • A formatted email is sent via Gmail with the summary and insights.

Features

• Dual input support: Google Drive OR direct upload
• Handles long-running jobs with Wait + If polling
• AI-powered transcript analysis with structured JSON
• Automated sentiment scoring and summary generation
• Professional HTML email reports

Requirements

• AssemblyAI API Key – transcription
• Google Drive OAuth2 – file fetch
• OpenAI API Key – summarization & sentiment analysis
• Gmail OAuth2 – email delivery

How to Use

1. Import this workflow into your n8n instance.
2. Add and configure the required credentials.
3. Update placeholders for:
   • AssemblyAI API Key
   • Google Drive Link
   • Gmail ID
4. Trigger via either form (local file or Google Drive link).
5. 5.For long recordings, split before uploading (10–20 min per chunk, 2–5s overlap).Keep audio consistent (e.g., WAV/MP3, 16 kHz mono if possible).Process chunks sequentially and combine summaries/action items at the end.

Customising this Workflow

• Adjust the OpenAI prompt to fit your reporting style (executive summary, bullet points, etc.).
• Extend email formatting with logos or branding.
• Add Slack, CRM, or Notion integrations for distribution.

Use Cases

• Meeting or lecture transcription with summaries
• Podcast analysis with highlights and quotes
• Business call reviews with action item extraction
• Academic seminar notes emailed automatically

🔗 Nodes Used

HTTP Request, Google Drive, Gmail, n8n Form Trigger, OpenAI

📥 Import

Download workflow.json and import into n8n: Workflow menu → Import from File

📖 Importing guide · 🔑 Credential setup