Test
Audio Compression Quiz
Este test tiene tipos de pregunta que se abren en el reproductor de siempre.
Preguntas del test (12)
1CD audio is generally 'uncompressed'.
- ATrue
- BFalse
2Pulse Code Modulation is what:
- AWhen audio is recorded in bursts.
- BA type of compression.
- CA digital representation of an analog wave.
- DAn analog representation of a digital wave.
3What term best explains the Shannon-Nyquist Sampling Theory?
- AThe sample rate must be greater than the bit depth.
- BThe sample rate must be above 42.
- CThe sample rate must be equal to or twice the highest frequency
- DThe sample rate must be equal to or half the highest frequency
4Which of the following statements are true? (Choose two answers)
- ABit Depth makes no difference to the quality of audio.
- BA higher Bit Depth increases dynamic range and allows a better recreation of the waveform.
- CA higher Sampling frequency increases dynamic range and allows a better recreation of the waveform.
- DA low Bit Depth causes waves to be distorted and unrealistic, no matter how high the sample rate.
5How would you calculate the Data Rate of a PCM audio file?
- ABy multiplying Bit Depth, Sampling Frequency and the Number of Channels.
- BBy dividing the Sampling Frequency by the Bit Depth
- CBy adding Bit Depth, Sampling Frequency and Number of Channels.
- DBy multiplying Bit Depth to the Sampling Frequency and then subtracting the Number of Channels.
6A Stereo CD at Redbook quality has:
- A Bit Depth of 16 bits
- Bit-rate of 1.4 Mb/second.- AVerdadero
- BFalso
7Two types of audio compression are:
[blank_start]Lossy[blank_end] Compression
and
Lossless Compression- ALossy
8Out of the following codec suffixes, choose two which belong to lossy compression codecs.
- A.ogg
- B.wav
- C.flac
- D.ape
- E.aac
9Lossy codecs use The [blank_start]Psychoacoustic[blank_end] Model to work around the limitations of human hearing.
- APsychoacoustic
10The two types of masking which a codec uses are: [blank_start]Temporal[blank_end] Masking and [blank_start]Simultaneous[blank_end] Masking
- ATemporal
- BBinaural
- CFace
- DAcoustic
- EAnonymous
- FHalloween
- GInstantaneous
- HIngenious
- IMiscellaneous
- JSimultaneous
11The MPEG codec uses 32 overlapping even bands.
- AVerdadero
- BFalso
12Fill in the gaps for this MPEG Layer 1 Bitstream:

- Abit allocation
- Bsub-band samples
Información
- Descripción
- A Quiz on Audio Codec compression!
- Autor
- Dan Turner
- Idioma
- English
- Visitas
- 498
- Etiquetas
- Valoración
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