Idk this is to hard skip the question
PCM: Pulse code modulation. It is a method used to digitally represent sampled analog signals. It is the standard form of digital audio in computers, digital telephony and compact discs. The amplitude of this signal is sampled regularly at uniform intervals.
PAM: Pulse amplitude modulation. It is a form of signal modulation where the message information is encoded in the amplitude of a series of signal pulses.
The correct answers are B and E. The two themes developed in "The Glittering Noise" are that the past can be an escape from the present, since the author says that she could be happy by reading old diaries, that is, remembering old times; and that in every era, people experience sorrow and joy, as she experiences both feelings when remembering events from the past.
