iMedia R081 Pre Production Skills
3.3: describe the properties and limitations of file formats for audio
3.3: describe the properties and limitations of file formats for audio
| Keyword | Definition |
|---|---|
| audio | A sound recording |
| bit depth | The number of bits used to store one sample |
| bit rate | The number of bits needed to store one second of audio recording |
| channels | The number of different speakers that the sound is designed to be played through |
| lossless compression | Technique used to reduce the file size of a sound recording without reducing audio quality |
| lossy compression | Technique used to reduce the file size of a sound recording that reduces audio quality |
| mono | An audio recording with only one channel |
| mp3 | Compressed (lossy) audio file format that reduces sound quality in order to reduce file size. Suitable for distribution online |
| sample rate | The number of times that the volume of sound is recorded every second |
| stereo | An audio recording with two channels (usually left and right) |
| wav | Uncompressed audio file format suitable for high quality recordings but large file means it's not ideal for distribution online |
