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Audio Engineering I Exam 3 Actual Test with correct Answers
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Audio Engineering I Exam 3 Actual Testwith correct Answers
What is the difference between Digital and Analog recording? ANS -Digital- unlimited tracks, analog -
limited to tape physical size
Analog - continually varying signal. Digital, fixed number of measurements per second.
What is a DAW? ANS -Digital Audio Workstation
What is the best DAW to work with? ANS -The one you can earn the most money with and know how to
use
What does Sample Rate mean? ANS -How many time per second a voltage is measured.
What does bit depth mean? ANS -How accurately the voltage is measured.
What is the sample rate and bit depth for CDs? ANS -44.1kHz, 16bit
What is the sample rate and bit depth for DVDs? ANS -48kHz, 24bit
What happens when the sample rate is lowered? ANS -The accuracy of the audio recording suffers.
What is meant by Dynamic Range? ANS -The difference between "it's" loudest and softest portions.
Dynamic Range of a 16bit recording is: ANS -About 96dB
Dynamic Range of a 24bit recording is: ANS -About 144dB
, Regarding Bit Depth, each bit increases dynamic range by how much? ANS -6 dB
What does the Nyquist Theorem state? ANS -Sample rate is at least 2x greater than the highest
frequency to be recorded.
What is meant by Quantizing? ANS -Rounding the sample value to the closest bit depth number.
What is meant by Dithering? ANS -Adding a small amount of noise into the conversion process to
improve the signal's performance when down sampling.
In class, we drew out a block diagram of the steps it takes to go from SPL to the DAW. There were 5
major steps. In this diagram, what is Step A ANS -SPL to Electricity
In class, we drew out a block diagram of the steps it takes to go from SPL to the DAW. There were 5
major steps. In this diagram, what is Step B ANS -Nyquist Filter
In class, we drew out a block diagram of the steps it takes to go from SPL to the DAW. There were 5
major steps. In this diagram, what is Step C ANS -Sample and Hold
In class, we drew out a block diagram of the steps it takes to go from SPL to the DAW. There were 5
major steps. In this diagram, what is Step D ANS -Analog to Digital Converter
In class, we drew out a block diagram of the steps it takes to go from SPL to the DAW. There were 5
major steps. In this diagram, what is Step E ANS -Store to Device
What does Error Correction do? What does it do to/for us? ANS -Places the data on the storage device in
such a way as to lessen the probability of drop outs.
What is a byproduct of increasing the sample rate and bit depth? ANS -More accurately recorded audio
while eating up more storage space
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