PCMalso: ピーシーエムFreq.FrequencyTop 50,000Meanings1nounpulse-code modulation; PCMtelecommunicationsTechnical term in telecommunications for a method of digitally representing sampled analog signals.See also: パルス符号変調音おん声せいデータはPCMで符ふ号ごう化かされる。The audio data is encoded using PCM.