4-5

Question 1

What is the bandwidth of a 96kHz digital recording?

Answer 1

48kHz

Question 2

How do I increasing the resolution of digital audio?

Answer 2

increase the data rate

Question 3

List the common sample rates for professional audio>

Answer 3

32, 44.1(CD), 48, 88.2,96, 176.4, 192 (kHz)

Question 4

How many voltage levels are in an 8 Bit word?

Answer 4

256 voltage level (48 dB)

Question 5

A 20 Bit recording yields approximately what dynamic range?

Answer 5

20 x 6 = 120

Question 6

What is the data rate for CD audio?

Answer 6

16 dB * 44.1kHz * 2 = 1411.2 = 1.411 Mbps

Question 7

What is the data rate for a ‘CD quality’ lossy compressed file?

Answer 7

MP3

Question 8

Making an MP3 at 256kbps from a 40MB Wav file, the approximate size (in MB) would be?

Answer 8

128kb 10:1, 256kb 5:1 - 4MB * 2 = 8 MB

Question 9

What is the maximum size of a CD (in MB)?

Answer 9

700MB

Question 10

What version of DVD is being used when I see a ‘pause’ in the middle of the movie?

Answer 10

DVD-9 (single side/dual layer: 9GB)

Question 11

What version of DVD is being used when I have to turn the DVD over to view the Widescreen version?

Answer 11

DVD-10; dual side/single layer

DVD 18; dual/dual layer

Question 12

List 3 lossless file formats:

Answer 12

apple lossless, WMA lossless, FLAC, MP3-HD