Nature of Audio

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What is sound?
Where sound travels by compressing and rarefracting the molecules in the air
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What is air wave pressure measured by?
Amplitude
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What is the main pitch you perceive when listening to a sound?
Fundamental pitch
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Acoustic capture
Air pressure variations – mechanical movement of diaphragm in mic – conversion to magnetic energy – conversion to electrical energy
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Electronic production
Electrical energy – conversion to magnetic energy – mechanical movement of speaker cone – air pressure variations heard by us as sound
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How is digital music made?
Digital music is created by taking multiple samples of an analogue waveform and encoding this information into binary language
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What does sample rate mean?
A sample rate of 48kHz means 48,000 samples have been taken in 1 second
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What is the process in which digital sound gets converted and played out by a speaker?
Digital-to-analogue converters (DAC) decodes the digital information back to an analogue form, this electrical signal is converted into magnetic energy in the speaker and mechanical movement of the speaker cones produces an audible sound.
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What can be added to a sound to change timbre of the sound?
Harmonics
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Other cards in this set

Card 2

Front

What is air wave pressure measured by?

Back

Amplitude

Card 3

Front

What is the main pitch you perceive when listening to a sound?

Back

Preview of the front of card 3

Card 4

Front

Acoustic capture

Back

Preview of the front of card 4

Card 5

Front

Electronic production

Back

Preview of the front of card 5
View more cards

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