Episode 25: Davit Baghdasaryan on the Science of Sound in a Distributed Work World

15 Oct 2020 · 43 min
Distributed, with Matt Mullenweg

15 Oct 2020 · 43 min

0:00

In this episode of Distributed with Matt Mullenweg, Davit Baghdasaryan, co‑founder and CEO of Krisp, walks through the personal problem that sparked the creation of Krisp, the technical underpinnings of its machine‑learning based noise‑cancellation, and the business and cultural evolution of the company. Baghdasaryan explains how a need to join late‑night meetings from Armenia while traveling led him to envision an audio‑privacy button, which later became a full‑blown ML solution. He details the creation of a massive synthetic dataset of 10,000+ noise types, the design of a spatial neural network that learns to separate speech from noise, and the engineering effort to squeeze multiple neural‑net models (wideband 16 kHz and upcoming full‑band) into a CPU‑only, on‑device inference pipeline with 20‑30 ms algorithmic latency and a total end‑to‑end latency of about 60 ms. The conversation covers hardware considerations (Bluetooth vs USB, wideband vs narrowband, beamforming microphones), the decision to keep processing local for privacy, and the product’s bidirectional noise removal (inbound and outbound). Baghdasaryan shares the dramatic 7× user growth during COVID, the shift to a freemium pricing model ($40/year during the pandemic, moving to $60/year), and the company’s remote‑first, distributed culture—including a hybrid future and a “Work from Forest” program. He also hints at an upcoming full‑band model release and future improvements that could make ML‑based noise cancellation a standard hardware feature within a few years.

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