Question 1 A narrow dynamic range can help in increasing the accuracy of a range of data in some audio files.
True
False
Question 2 The vertical axis of spectrum (sound waveform in spectral view) represents pressure
distance
time
frequency
amplitude
Question 3 The unit used for measuring ____________ is Hz.
amplitude
frequency
dynamic range
bit-depth
Question 4 In digital audio, doubling the sampling rate _____________.
doubles the file size
doubles the frequency
doubles the resolution
Question 5 MP3 is not a good file format to keep a source file for further editing.
True
False
Question 6 Narrow dynamic range can lead to clipping of audio signals that are outside the range.
True
False
Question 7 The software that periodically checks and downloads new episodes in a podcast is called __________
aggregator
feed
podcast
automatic updater
Question 8 Which type of microphone is most sensitive to sound coming from the front?
Uni-directional
Omni-directional
Question 9 A sound with higher ____________ is perceived to have a higher pitch.
decibels
frequency
fidelity
sampling rate
bit depth
Question 10 In digital audio, higher resolution means higher ______________
amplitude
frequency
sampling rate
bit-depth
Question 11 The age of a listener is a factor that affects the measurement of loudness.
True
False
Question 12 0 (zero) decibels indicates absence of sound wave or no sound wave.
True
False
Question 13 How many levels of amplitude does an 8-bit sound allow?
8
256
16
128
Question 14 The horizontal axis of spectrum (sound waveform in spectral view) represents
time
frequency
amplitude
distance
pressure
Question 15 8-bit is generally considered a sufficient bit-depth for recording music.
True
False
Question 16 The sound quality of a MIDI music depends on the synthesizer on which it is played.
True
False
Question 17 It is important to watch the level of the input meter during recording, because if the level is too low clipping can occur.
True
False
Question 18 According to Nyquist's theorem, the sampling rate must be at least ________ of the audio frequency.
twice
half
thrice
same as
Question 19 Given an audio clip of 120 seconds that is sampled at the rate of 44,100 Hz and quantized at 16-bit depth, calculate the size of this file in bytes. Assume mono channel.
84,672,000
10,584,000
169,344,000
21,168,000
Question 20 The ____________ effect lets you amplify the audio such that the highest value is the amplitude you specify to avoid clipping
amplify
envelope
noise reduction
normalize
Question 21 The sound intensity of an audio track is 4 times the sound intensity of a reference sound. Calculate the number of decibels. Some logarithm values are presented here for your reference if necessary:
Log 1 = 0
Log 1.5 = 0.17
Log 2 = 0.3
Log 2.5 = 0.39
Log 3 = 0.47
Log 3.5 = 0.54
Log 4 = 0.60
Log 4.5 = 0.65
Log 5 = 0.69
6
12
4
8
Question 22 A sound waveform depicts air molecules spread over time.
True
False
Question 23 MIDI is a physical object.
True
False
Question 24 Reducing the number of channels from 2 (stereo) to 1 (mono) will __________.
have no effect on the file size
decrease the file size by half
decrease the file size to 1/5th
decrease the file size to 1/10th
Question 25 I want to download an audio file that is 20Mb in size. I have dial-up connection at home with the speed of 28.8kbps. Approximately, how many seconds will it take me to download this file?
694
0.19
11.5
0.023
Question 26 Streaming audio can be played while it is being downloaded.
True
False
Question 27 If you use the Amplify effect to adjust the volume of your sound track, it is possible that some of the highest intensity audio clips may get clipped.
True
False
Question 28 The reduction of a digital audio file size can be achieved by ___Select all that apply.
reducing the sampling rate
reducing the pitch of the audio
reducing the bit depth
reducing the amplitude of the audio
reducing the number of channels
Question 29
Which of the following file extensions indicates that it is an audio file?
.wav
.jpg
.tiff
.mpeg4
Question 30 If a sound is 1000 times more intense than the TOH what is that sound's intensity in dB?
10
100
1000
30
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