- Industria: Computer; Software
- Number of terms: 54848
- Number of blossaries: 7
- Company Profile:
Apple Inc., formerly Apple Computer, Inc., is an American multinational corporation headquartered in Cupertino, California, that designs, develops, and sells consumer electronics, computer software and personal computers.
(1) 具有无限的系统权限的用户。也被称为超级用户。(2) BSD 样式目录层次结构中的顶层目录。它作为一个斜杠 (/) 编写，是每一个绝对路径名的第一个元素。
Industry:Software; Computer
In audio, the ratio of output level to the corresponding input level for a device. Level is typically represented in terms of power or voltage, but gain is unitless and is identical whether voltages or powers were used to calculate it. Because gain is a ratio, it is usually described using decibels. A gain of 0 dB indicates no change in level, while a gain of 10 dB is perceived as approximately a doubling in loudness—depending on the nature of the sound and on the initial loudness.
Industry:Software; Computer
An operation that changes the scale of the coordinate space by the specified x and y factors, effectively stretching or shrinking coordinates. The magnitude of the x and y factors governs whether the new coordinates are larger or smaller than the original. A negative factor flips the corresponding axis.
Industry:Software; Computer
In audio, circuitry or software that limits signal amplitude to a user-defined maximum. Compare level compression.
Industry:Software; Computer
A difference, typically unintentional and undesired, between the signals on the input and output of an audio device. Commonly measured types of distortion include harmonic distortion, intermodulation distortion, quantization distortion, and jitter. Intentional differences between input and output signals, such as level or equalization differences, are not described as distortion. Compare noise.
Industry:Software; Computer
(1) In electronics, the amount of opposition a circuit presents to an AC (alternating current) signal at a given frequency. Impedance includes both a resistive (frequency-independent) and a reactive (frequency-dependent) component. (2) In acoustics, the ratio of average sound pressure to particle velocity over a given surface area and at a given frequency.
Industry:Software; Computer
