Question 1

An advantage of digital recording is ___________________.&#10;A) better mixes.&#10;B) random access.&#10;C) louder mixes.&#10;D) recording by ones and zeros.

Accepted Answer

Random access is the ability to quickly and easily jump to any point in a recording, rather than having to fast-forward or rewind through tape. This is a significant advantage of digital recording over analog recording.

Question 2

Digital recording eliminates noise from ________________.&#10;A) the studio.&#10;B) the mixing console.&#10;C) the microphones.&#10;D) the recording medium.

Accepted Answer

Digital recording significantly reduces or eliminates noise associated with the recording medium itself, such as tape hiss, by encoding audio into digital format where such analog noise does not occur.

Question 3

In digital recording, the signal from your mic preamp is first run through a ________ filter.&#10;A) anti-aliasing&#10;B) anti-imaging&#10;C) lowpass&#10;D) digital

Accepted Answer

Anti-aliasing filters are used in digital recording to remove frequencies above the Nyquist frequency (half the sampling rate) to prevent aliasing, which is the distortion that occurs when high-frequency signals are incorrectly sampled and appear as lower frequency signals in the digital recording.

Question 4

Converting an analog voltage to a digital number is called _______________.&#10;A) magnetization&#10;B) quantization&#10;C) sampling&#10;D) frequency conversion

Accepted Answer

Converting an analog voltage to a digital number is called quantization.

Question 5

Following a D/A converter, an _____________ filter smoothes the steps in the analog signal.&#10;A) anti-aliasing&#10;B) anti-imaging&#10;C) aliasing&#10;D) analog-to-digital

Accepted Answer

An anti-imaging filter is used after a D/A converter to smooth out any steps in the analog signal. An anti-aliasing filter is used before an A/D converter to prevent high frequency signals from being sampled improperly. Aliasing refers to the distortion that can occur when high frequency signals are improperly sampled. Analog-to-digital refers to the process of converting an analog signal to a digital one, and is not relevant to the question.

Question 6

The sound quality of a digital recording depends mainly on ____________________.&#10;A) the recording medium.&#10;B) whether the signal is on hard drive or CD.&#10;C) the A/D and D/A converters.&#10;D) whether the signal is optical or electrical.

Accepted Answer

The sound quality of a digital recording depends mainly on the A/D and D/A converters, as they convert the analog sound signal into digital and then convert it back into analog for playback. The recording medium and whether the signal is optical or electrical may affect the signal transmission and storage, but they do not have a significant impact on the sound quality itself. Similarly, whether the signal is on a hard drive or CD does not affect the sound quality, as it is simply a matter of different storage formats.

Question 7

The higher the bit depth (word length), the less the _______________.&#10;A) distortion.&#10;B) frequency loss.&#10;C) sense of depth.&#10;D) resolution.&#10;E) all of the above.

Accepted Answer

Higher bit depths allow for more accurate representation of the original audio signal, resulting in less distortion.

Question 8

The higher the sampling rate, the more the ______________.&#10;A) high-frequency extension.&#10;B) resolution.&#10;C) noise.&#10;D) sense of depth.

Accepted Answer

Increasing the sampling rate allows for higher frequencies to be captured, resulting in a higher frequency extension.

Question 9

The bit depth and sampling rate on a CD are ________________.&#10;A) 24-bit/94 kHz&#10;B) 16-bit/44.1 kHz&#10;C) 16 kHz/44.1-bit&#10;D) whatever you want it to be

Accepted Answer

The bit depth and sampling rate on a CD are standardized at 16-bit/44.1 kHz. This means that each sample is recorded at 16 bits and 44,100 samples are taken every second. This provides sufficient resolution for most music recording and playback, while also keeping file sizes manageable for the storage and transmission of CDs. Option A is not correct because 24-bit/94 kHz is not a standard CD format. Option C is not correct because the values are mixed up. Option D is not correct because CDs have a standardized format which is the 16-bit/44.1 kHz.

Question 10

The sound of a digital recording is different from analog because ______________.&#10;A) the music is sampled into bits so some information is missing.&#10;B) mp3 files are compressed audio.&#10;C) digital's sampling rate is so much lower.&#10;D) analog introduces tape noise, distortion, wow and flutter.

Accepted Answer

The answer of The sound of a digital recording is...

Question 11

Oversampling is sampling an audio signal ___________________ to reproduce the highest frequency in the signal.&#10;A) at a higher rate than is needed&#10;B) more than once&#10;C) exactly twice the Nyquist frequency&#10;D) exactly one-half the Nyquist frequency

Accepted Answer

The answer of Oversampling is sampling an audio signal ___________________...

Question 12

Sampling rate affects _____________.&#10;A) dynamic range.&#10;B) the high-frequency response.&#10;C) the noise and distortion.&#10;D) clipping.

Accepted Answer

The answer of Sampling rate affects _____________.&#10;A) dynamic range.&#10;B) the...

Question 13

Bit depth affects ________________.&#10;A) dynamic range.&#10;B) the high-frequency response.&#10;C) clipping.&#10;D) the sampling rate.

Accepted Answer

The answer of Bit depth affects ________________.&#10;A) dynamic range.&#10;B) the...

Question 14

The file size of a digital recording depends on:&#10;A) the number of tracks&#10;B) the bit depth&#10;C) the sampling rate&#10;D) the duration of the recording.&#10;E) all of the above.

Accepted Answer

The answer of The file size of a digital recording...

Question 15

A meter reading of 0 dBFS means ______________.&#10;A) the signal is clipping.&#10;B) all 16 bits are on.&#10;C) all bits are on.&#10;D) all 24 bits are on.

Accepted Answer

The answer of A meter reading of 0 dBFS means...

Question 16

To reduce jitter, ____________________.&#10;A) use the clock in the A/D converter.&#10;B) do an A/D conversion.&#10;C) increase the sampling rate.&#10;D) increase the word length.

Accepted Answer

The answer of To reduce jitter, ____________________.&#10;A) use the clock...

Question 17

Which is the fastest data-transfer protocol?&#10;A) USB 2.0&#10;B) FireWire&#10;C) Thunderbolt&#10;D) iOS

Accepted Answer

The answer of Which is the fastest data-transfer protocol?&#10;A) USB...

Question 18

When should you apply dither?&#10;A) When the signal is noisy.&#10;B) When you are converting a 24-bit signal to 16-bit.&#10;C) Whenever you are reducing the sampling rate.&#10;D) When you want granular distortion.

Accepted Answer

The answer of When should you apply dither?&#10;A) When the...

Question 19

If you record a 16-bit signal with a 24-bit DAW, the sound quality ________________.&#10;A) gets better.&#10;B) gets worse.&#10;C) depends on the DAW manufacturer.&#10;D) stays the same.

Accepted Answer

The answer of If you record a 16-bit signal with...

Question 20

An advantage of a flash-memory recorder is ________________.&#10;A) portability.&#10;B) no moving parts.&#10;C) ability to store digital audio.&#10;D) small size.&#10;E) all of the above.

Accepted Answer

The answer of An advantage of a flash-memory recorder is...

Question 21

To prevent damaging a recorded CD-R, label it with ________________.&#10;A) a paper label.&#10;B) a ballpoint pen.&#10;C) a CD marker.&#10;D) a permanent marker.

Accepted Answer

The answer of To prevent damaging a recorded CD-R, label...

Question 22

PQ code editing lets you ____________________.&#10;A) control phase and quantization.&#10;B) set the polarity and &#34;Q&#34; of an equalizer.&#10;C) set the start time of each song on a CD-R.&#10;D) control mp3 bitrate and ISRQ codes.

Accepted Answer

The answer of PQ code editing lets you ____________________.&#10;A) control...

Question 23

An advantage of a multitrack hard-drive recorder is _______________.&#10;A) it's more reliable than a computer DAW.&#10;B) best sound quality of all the digital formats.&#10;C) ability to backup recordings.&#10;D) works equally well for CD-R or mp3 recordings.

Accepted Answer

The answer of An advantage of a multitrack hard-drive recorder...

Question 24

To back up a session's wave files means to copy them to ___________________.&#10;A) an external hard drive.&#10;B) another storage medium.&#10;C) another folder.&#10;D) another filename.

Accepted Answer

The answer of To back up a session's wave files...

Deck 12: Digital Audio