Quiz 11 Flashcards
What are two of the most important advantages of digital synthesisers compared to analogue synthesisers?
the ability to store data and the ability to process data using algorithms
What is the most important part of digital communication and storage?
noise immunity
What occurs in a loudspeaker?
a changing coil current changes magnetic force and moves a diaphragm
How is the amplitude of the wave sampled in standard analogue to digital recording of audio?
it is sampled at a rate of 44 kHz and each sample stored using 16 bits
How would you describe different recording formats?
- .wav directly stored waveform
- .flac compressed but lossless
- .mp3 compressed with some loss of information
What devices were patented by Edison?
the light blub, the carbon telephone transmitter and the phonograph
What was the phonoautograph?
a device for recording sound as a wiggly line on paper
How does a dynamic microphone work?
a magnet moves inside a coil to generate the current
how were a pianola (piano player) and early computing similar?
they all store information on punched card or tape, in digital form
