Adobe 22011292 User Guide - Page 369

ADOBE AUDITION 355 User Guide BIOS Basic Input Output System. It's the most basic system for controlling a PC. BIOS routines are usually stored on hardware on the motherboard of a computer system (i.e., stored in a ROM chip). It's the BIOS that handles the instructions for starting a computer, initializing the hardware, and launching the operating system. Bit Bits are part of the numbering system used in digital equipment, such as computers. A bit makes up a larger number, called a word, which is used to represent the voltage level (amplitude) of an analog signal. The number of bits used to make up a word determines the bit resolution, which in turn determines the number of voltage levels possible in representing amplitude. Therefore, greater bit resolutions make for higher dynamic range. Bit Resolution (a.k.a. Bit Depth) The number of bits used in measuring amplitude for a sample. Choosing 8-bit resolution will provide 256 possible unique "volumes", while choosing 16-bit resolution will provide 65,536 possible unique volumes, which results in a 96 dB signal-to-noise ratio. Obviously, a much greater dynamic range can be reproduced at 16-bit resolution than at 8-bit resolution, which only has a 48 dB dynamic range. Compact disc players have 16-bit resolution. Some sound cards support resolutions greater than 16-bit. Adobe Audition supports up to 32-bit sample rates. It's best to remain at the 32-bit level while working in Adobe Audition, and convert down for output, in order to best represent the audio after transforms have been performed. Block A segment of audio in Adobe Audition's Multitrack View that can be dragged separately. A block can be one of several data types: a wave block, a MIDI block, or a video block. Brown Noise Brown noise has a spectral frequency of 1/f^2. This means, in English, that there's much more low-end, and there are many more low-frequency components to the noise. This results in thunder- and waterfall-like sounds. Brown noise is so called because, when viewed, the wave follows a Brownian motion curve. That is, the next sample in the waveform is equal to the previous sample, plus a small random amount. When graphed, this waveform looks like a mountain range. Bus An electrical conductor that makes a common connection between several circuits. In the case of Adobe Audition's Multitrack View, a bus lets you make a common connection between several tracks. Bus Effects Configuration This dialog shows tabs for each effect on a given bus. It's where you actually set the properties for that effect, such as the delay length. Bus Effects Rack The Bus Effects Rack dialog is the initial dialog used for deciding which real-time effect(s) you wish to add to or remove from a bus. Burn Burning is the act of writing to a CD-R or CD-RW disc. CD-R A CD-R is a blank, recordable compact disc that can be written to once. It typically holds at least 650 MB of data or 74 minutes of audio. CD-R can also refer to the computer drives that write, or burn, CD-R discs. CD-RW A rewritable CD-R disc. A CD-RW also typically holds at least 650 MB of data or 74 minutes of audio, but unlike a CD-R, a CD-RW disk can be erased and written to again.