4.3 Properties Of Audio Files

Question 1

Audio

Answer 1

Sound files that are stored on a computer

Question 2

Sample

Answer 2

Piece of data stored in a sound file

Question 3

Bit depth

Answer 3

The number of units of data available for each sample
Higher bit depth = more realistic playback quality

Question 4

Sample rate

Answer 4

The number of audio samples captured in each second of a recording
Higher sample rate= increased quality and file size

Question 5

Amplitude

Answer 5

Measurement of a sound wave from the middle to its lowest or highest point (hertz)

Question 6

Audio files

Answer 6

-MP3
-ACC
-Ogg Vorbis
-FLAC
-ALAC
-WAV

Question 7

MP3

Answer 7

Pro:
-works on most devices
-small file size
Con:
-Quality not good enough for professional recording

Question 8

ACC

Answer 8

Pro:
-small file size
-suitable for streaming
-better quality than MP3
-Standard for apple devices
Con:
-not compatible for all devices
-still loses some quality

Question 9

Ogg Vorbis

Answer 9

Pro:
-used by Spotify
-More efficient and better quality than MP3
con:
-compression results in some less of data

Question 10

FLAC

Answer 10

Pro:
-free
-studio quality sound
-compresses to half the size of uncompressed files
-no less of quality
Con:
Larger file sizes than MP3
-not supported by some streaming apps

Question 11

ALAC

Answer 11

Pro:
-supported by iTunes
-Converts to other formats without loss of quality
Con:
-compression not as efficient as FLAC
-large files sizes
-compatible with apple devices

Question 12

WAV FILES

Answer 12

pro:
-high quality sound
-CD’s encoded as MAV files
-identical copy of original music
Con
-large file sizes
-can’t compress files