vocoding

Also integrated into the BCM 1101 are three analog CODECs capable of supporting both narrowband (8 kHz) and wideband (16 kHz) sampling, which in conjunction with wideband vocoding will enable IP phone networks to deliver higher fidelity voice transmission than PBXs or the Public Switched Telephone Network (PSTN).

If digital signal processing, vocoding, encryption, and explosion in cellular traffic volume weren't enough to frustrate cellular intercept, here's one more challenge: the existence of numerous, incompatible "standards" throughout the world [ILLUSTRATION FOR DIAGRAM 1 OMITTED].

This second edition differs most notably from the first, published in 1985, in its addition of several ideas and techniques that have since gained greater prominence, such as phase vocoding, granular synthesis, and physical modeling.