AI Podcast Generator: Convert PDFs to Audio in 9 Indian Languages

Transform Any PDF into Engaging AI-Powered Podcasts in Multiple Indian Languages

Create professional two-host podcast episodes from your PDFs with authentic native language support for Hindi, Tamil, Telugu, Kannada, Malayalam, Bengali, Marathi, Gujarati, and Punjabi. This n8n workflow leverages Smallest AI's Lightning V3.1 engine to generate NotebookLM-style audio briefings with lightning-fast processing and optional voice cloning capabilities.

What This Workflow Does

The automation begins when you upload a PDF through the form trigger. The workflow extracts text content and sends it to GPT-5, which generates a structured two-host conversation script in JSON format. Each dialogue turn is then routed to the appropriate host's text-to-speech branch, where Smallest AI Lightning synthesizes high-quality 24kHz audio with sub-100ms latency. A custom Code node concatenates all WAV chunks into a single podcast file in perfect conversational order, then emails the finished audio to your specified address.

Use Cases

• Corporate Communications: Convert company memos and reports into accessible audio briefings for multilingual teams
• Educational Content: Transform lecture notes and research papers into engaging podcast episodes for students
• Content Marketing: Repurpose whitepapers and blog drafts into podcast content reaching Indian language audiences
• Training Materials: Convert documentation into conversational audio training sessions with voice cloning for familiar presenters

Technical Details

Built with n8n's set, code, sort, gmail, merge, and switch nodes, this workflow integrates seamlessly with Smallest AI, OpenAI, and Gmail. The pure JavaScript audio concatenation eliminates FFmpeg dependencies, ensuring compatibility with n8n Cloud. Voice cloning requires just a 10-second audio sample to cast yourself or colleagues as hosts. With Smallest AI's free tier available and processing speeds delivering 4-minute podcasts from 5-page PDFs in roughly 60 seconds, this solution offers both accessibility and efficiency for Indian language podcast generation.