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V- Obj 3.01
Audio- Img
| Term | Definition |
|---|---|
| Sound wave | An audible vibration that travels through air or water. |
| Frequency | Number of waves to pass a point in one second. |
| Amplitude | Distance from rest to crest or rest to trough. |
| Wavelength | Distance from crest to crest. |
| Crest | Point that exhibits maximum amount of upward displacement from the rest position. |
| Trough | Point that exhibits maximum amount of downward displacement from the rest position. |
| Pitch | The quality of sound determined by the rate if vibration. |
| Sampling | Process used to convert analog sound waves into digital data to be sued by computers. |
| Sample rate | The number of samples taken per second, often measured in kilohertz. (kHz) |
| Bit rate (depth) | The number of computers bits process per unit of time. |
| Sample size | The number of bits used to save one sample. |
| Channel | Single audio stream consisting of a sequence of samples. |
| Mono | One channel; Audio is a single channel, where sound comes from a single direction. |
| Stereo | Two channels; creates the impression of sound being heard from various directions, as in human hearing. |
| Audio file size | Determined by the sample rate, sample rate, sample size and number of channels used. |
| MP3 File Format | MPEG-1 Audio layer 3 |
| WAV File Format | Waveform file |
| OGG File Format | Ogg vorbis |
| AIFF File Format | Audio Interchange File Format |