Seewo Tech Circle

Sep 10, 2019 · Fundamentals

Why G711 and MPEG‑1 Audio Codecs Compress Sound Efficiently

This article explores the acoustic foundations of audio compression, detailing how human perception models enable non‑uniform quantization in G711 (PCMA/PCMU) and how MPEG‑1 layer‑III (MP3) leverages frequency‑domain subband analysis, masking effects, and psychoacoustic thresholds to achieve high compression ratios without sacrificing perceived audio quality.