How a Voice Agent Learns the Rhythm of Conversation - Shawn Wen
PolyAI CTO Shawn Wen explains audio-native turn-taking, latency, training on noisy calls and adding synthetic noise.
Listening guide
Tim Scarfe talks with researchers and builders about machine learning, intelligence and its limits. Here are six MLST episodes, each with a Chain of Thought conversation to play next.
I host Chain of Thought. We have no affiliation with Machine Learning Street Talk: no partnership, no arrangement, nothing either of us gets from this page.
Machine Learning Street Talk began in April 2020. Tim Scarfe runs the show, and Keith Duggar appears regularly. Its Apple Podcasts description covers current affairs in AI, cognitive science, neuroscience and philosophy of mind; recent episodes are technical conversations with researchers and builders.
Recent subjects include voice agents, formal proof, agent evaluation, tabular models, robotics and speech recognition. The show links to ReScript transcripts from some recent episode notes.
| Detail | Machine Learning Street Talk | Chain of Thought |
|---|---|---|
| Hosts | Tim Scarfe, with regular appearances by Keith Duggar | Conor Bronsdon |
| First episode | April 2020 | November 2024 |
| Format | Technical conversations with researchers and builders | Interviews with engineers, founders and operators shipping AI in production |
| Transcripts | ReScript transcript links in some recent episode notes | A full transcript on every episode page |
| Where to listen | MLST website | Episode archive and podcast apps |
Details for Machine Learning Street Talk come from the sources below, checked 14 October 2026.
Chain of Thought follows AI infrastructure from the point of view of people shipping it. Conor Bronsdon asks about model, data and product decisions in specific systems. MLST gives researchers and builders room to examine the technical ideas and limits underneath those decisions.
Start with Machine Learning Street Talk to spend time on the mechanics of a model, method or research result.
Start with Chain of Thought to hear what happens when a team turns an AI capability into a service people use.
You do not have to pick one. The pairings below are where the two shows meet.
PolyAI CTO Shawn Wen explains audio-native turn-taking, latency, training on noisy calls and adding synthetic noise.
Then play
11 Cameras, Dozens of Mics: The AI That Reads the Room | Tormod Ree, Neat Tormod Ree, Neat Tormod Ree of Neat follows the audio question into a meeting room, where edge models combine microphone and camera signals to decide how to respond.Lean creator Leonardo de Moura discusses proof checkers, bugs in trusted kernels and what verification means when AI can produce the proof.
Then play
After Code Gen: What Graphite Is Building for the Post-AI Dev Stack | Greg Foster Greg Foster, Graphite Greg Foster of Graphite follows the verification question into everyday software work, where AI-generated pull requests have moved pressure onto review.Zhengyao Jiang describes an experiment in which an agent revised another agent's code, prompts and tools, and the difficulty of separating progress from reward hacking.
Then play
Every AI Agent Has an Evaluation Gap | Alex Ratner, Snorkel AI Alex Ratner, Snorkel AI Alex Ratner of Snorkel AI takes up the measurement problem, describing the gap between agent benchmark results and the work enterprises need agents to do.Frank Hutter explains how TabPFN learns from synthetic tables and uses an entire training table as context when making a prediction.
Then play
Beyond Transformers: How Liquid AI Is Rethinking LLM Architecture | Maxime Labonne Maxime Labonne, Liquid AI Maxime Labonne of Liquid AI follows the model-design question into language models, explaining why his team changed the architecture to meet speed and device constraints.Ming-Yu Liu of NVIDIA explains how Cosmos 3 connects language, video and robot actions, and how a simulator can help choose policies to test in the world.
Then play
Gemini 3 & Robot Dogs: Inside Google DeepMind's AI Experiments | Paige Bailey Paige Bailey, Google DeepMind Paige Bailey of Google DeepMind follows physical AI into another developer ecosystem, discussing robotics work alongside the Gemini and Gemma model choices.Mistral audio researcher Pavan Kumar Reddy explains Voxtral, speaker diarization failures and weaker results outside the most common languages.
Then play
Breaking the Language Barrier: Smartling's AI Translation Pipeline | Olga Beregovaya Olga Beregovaya, Smartling Olga Beregovaya of Smartling follows the language question into translation, where English-centered models and domain-specific errors still need attention.Facts about Machine Learning Street Talk on this page were checked against these pages on 14 October 2026.
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