Group Call Scale — Field Guide

One page: the three scaling regimes (50 / 500 / 5,000), the quadratic-vs-linear arithmetic, the active-speaker and N-1 mixing rules, and the speaker-cap pitfall.

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Book cover: Audio for Video, Volume 5 of the Fora Soft Video Engineering Handbook

The book · Volume 5 of 7

Audio for Video: A Complete Guide to Sound in Video Products: From Jitter Buffers and Lip Sync to Atmos, Quality Metrics, and Neural Codecs

This field guide covers three scaling regimes for group calls at 50, 500 and 5,000 participants, the quadratic-versus-linear arithmetic, active-speaker and N-1 mixing, and the speaker-cap pitfall. Volume 5 covers this in depth: bitrate and topology decisions, jitter buffers and NetEq, loss concealment with FEC and RED, and diagnosing call audio incidents. Written by Nikolay Sapunov, CEO at Fora Soft.

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