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MaWD 3.01 Audio Key
Term | Definition |
---|---|
Sounds | Vibrations that travel through the air or some other medium |
Sound Wave | Audible vibration that travels through air or water |
Decibels | The loudness or intensity of a sound |
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. |
Wavelength | Distance from crest to crest |
Amplitude | Distance from rest to crest or rest to trough |
Frequency | Number of waves to pass a point in one second (how fast) |
Pitch | Quality of a sound determined by the rate of vibration. The degree of highness or lowness of a tone(how high) |
Analog | Continuous phenomena, such a microphones, video cameras (continuous valued voltages) |
Sample Rate | The rate or frequency at which sound is sampled to digitize it. Measurements of a sound wave over time measured in Hz (cycles/sec) |
Bit Rate | The number of computer bits that are conveyed or processed per unit of time |
Waveform | Visual representation of an audio signal |
Clip | Short segment of audio. It can be combined with other s to make an audio track |
Track | Area upon which audio moves. It may be a single wave form or could be made up of clips |
Trim | Removes everything from the left and right of selected audio |
Amplify | Change the volume of selected audio |
Capture | To record audio, video and store digital data |
WAV | Developed by IBM and MIcrosoft for Windows, High quality (lossless), large file size |
AIFF | Developed by Apple, high quality (lossless), large file size |
MP3 | Compressed format, popular for music (MP3 players), well suited for internet |
.avi (Audio Video Interleave) | Stores video and audio |
.ogg (Ogg Vorbis) | Open source, compressed format, well suited for internet, popular with gaming industry. |