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MAWD lesson 3.01
Understanding Principles of Audio
| Term | Definition |
|---|---|
| Sound | Vibrations that travel through the air or another medium and can be heard when they reach the person's or animal's ear |
| Sound wave | Wave of compression and refraction, by which sound is propagated in an elastic medium such as air |
| Decibels | Unit to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale |
| Crest | Point on a wave with the maximum value of upward displacement of the medium is at a maximum |
| Trough | Lowest point the medium sinks to |
| Wavelength | Distance between 2 identical positions in the cycle or wave |
| Amplitude | Size of the vibration , determines how loud the music is |
| Frequency | Speed of the vibration, determines the pitch of the sound |
| Pitch | How high or low the note is |
| Analog | Actual, continuous sound waves generated by the artists and their equipment |
| Sample rate | How many times per second a sound is sampled |
| Bitrate | Number of bits, or the amount of data that is processed over a certain amount of time |
| Waveform | depiction of the pattern of sound pressure variation in the time domain |
| Clip | Film or video rendition of a recorded song, often showing the musicians performing or showing images that illustrate the lyrics or mood of the song |
| Track | One pf several songs or pieces pf music on a recording |
| Trim | Knob used to adjust the level of input signal as it enters the home recording sound mixer |
| Amplify | Make music louder by strengthening electrical signals |
| Capture | Physical record of a musical performance that can then be played back, or reproduced |
| WAV | Files that are lossless uncompressed broadcast CD quality music files |
| AIFF | Audio file format standard used for storing sound dara for personal computers and other electronic audio devices |
| mp3 | Compressed audio file format developed by the moving pictures experts group |
| .avi | Computer file format that contains audio and video data and is used to play back the audio and video data simultaneously |
| .ogg | Free, open container format created under unrestricted software parents by the xiph.org foundation |
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