| |||
| adaptive delta modulation (MAC audio, CCITT Rep. 953); continuously variable slope delta modulation (voice mail processing code, ITU-T (CCITT) Rec. G.721) | |||
| |||
| adaptive delta modulation (MAC audio, CCITT Rep. 953); continuously variable slope delta modulation (voice mail processing code, ITU-T (CCITT) Rec. G.721) | |||
