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Audio Compression Quiz

Dan Turner 12 questions

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Questions in this quiz (12)

  1. 1CD audio is generally 'uncompressed'.
    1. ATrue
    2. BFalse
  2. 2Pulse Code Modulation is what:
    1. AWhen audio is recorded in bursts.
    2. BA type of compression.
    3. CA digital representation of an analog wave.
    4. DAn analog representation of a digital wave.
  3. 3What term best explains the Shannon-Nyquist Sampling Theory?
    1. AThe sample rate must be greater than the bit depth.
    2. BThe sample rate must be above 42.
    3. CThe sample rate must be equal to or twice the highest frequency
    4. DThe sample rate must be equal to or half the highest frequency
  4. 4Which of the following statements are true? (Choose two answers)
    1. ABit Depth makes no difference to the quality of audio.
    2. BA higher Bit Depth increases dynamic range and allows a better recreation of the waveform.
    3. CA higher Sampling frequency increases dynamic range and allows a better recreation of the waveform.
    4. DA low Bit Depth causes waves to be distorted and unrealistic, no matter how high the sample rate.
  5. 5How would you calculate the Data Rate of a PCM audio file?
    1. ABy multiplying Bit Depth, Sampling Frequency and the Number of Channels.
    2. BBy dividing the Sampling Frequency by the Bit Depth
    3. CBy adding Bit Depth, Sampling Frequency and Number of Channels.
    4. DBy multiplying Bit Depth to the Sampling Frequency and then subtracting the Number of Channels.
  6. 6A Stereo CD at Redbook quality has:
    - A Bit Depth of 16 bits
    - Bit-rate of 1.4 Mb/second.
    1. ATrue
    2. BFalse
  7. 7Two types of audio compression are:
    [blank_start]Lossy[blank_end] Compression
    and
    Lossless Compression
    1. ALossy
  8. 8Out of the following codec suffixes, choose two which belong to lossy compression codecs.
    1. A.ogg
    2. B.wav
    3. C.flac
    4. D.ape
    5. E.aac
  9. 9Lossy codecs use The [blank_start]Psychoacoustic[blank_end] Model to work around the limitations of human hearing.
    1. APsychoacoustic
  10. 10The two types of masking which a codec uses are: [blank_start]Temporal[blank_end] Masking and [blank_start]Simultaneous[blank_end] Masking
    1. ATemporal
    2. BBinaural
    3. CFace
    4. DAcoustic
    5. EAnonymous
    6. FHalloween
    7. GInstantaneous
    8. HIngenious
    9. IMiscellaneous
    10. JSimultaneous

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Description
A Quiz on Audio Codec compression!
Language
English
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