µ-law (mu-law) A voice companding technique specified in the ITU-T G.711 Recommendation for pulse code modulation (PCM).This technique is used in North America and areas under North American influence. See mu-law. The Greek letter pi, the rough equivalent of 3.14. See pi. Ω The Greek letter omega, Ω, is used as the symbol for ohm. See ohm and Ohm’s Law. |