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Schematic of an AGC used in the analog telephone network; the feedback from output level to gain is effected via a Vactrol resistive opto-isolator.. Automatic gain control (AGC) is a closed-loop feedback regulating circuit in an amplifier or chain of amplifiers, the purpose of which is to maintain a suitable signal amplitude at its output, despite variation of the signal amplitude at the input.
The group delay and phase delay properties of a linear time-invariant (LTI) system are functions of frequency, giving the time from when a frequency component of a time varying physical quantity—for example a voltage signal—appears at the LTI system input, to the time when a copy of that same frequency component—perhaps of a different physical phenomenon—appears at the LTI system output.
Delayed release (film), the delayed release of a film to the public; Delayed release (pharmacology), oral medicines that do not immediately disintegrate and release the active ingredient(s) into the body [+delayed release], a distinctive feature given to affricate consonants in phonology; Late release, a term associated with vaporware in ...
Modified-release dosage is a mechanism that (in contrast to immediate-release dosage) delivers a drug with a delay after its administration (delayed-release dosage) or for a prolonged period of time (extended-release [ER, XR, XL] dosage) or to a specific target in the body (targeted-release dosage).
Threshold timing behavior is subject to attack and release settings (see below). When the signal level goes above threshold, compressor operation is delayed by the attack setting. For an amount of time determined by the release after the input signal has fallen below the threshold, the compressor continues to apply dynamic range compression.
As a result of compressing the level, AGC reduces the amount of envelope fluctuation in the input signal (ENV p) by an amount that depends on the rate of fluctuation and the speed with which the amplification changes in response to changes in input sound level. [191] [192] AGC can also change the shape of the envelope of the signal. [193]
The AGC provided computation and electronic interfaces for guidance, navigation, and control of the spacecraft. [3] The AGC was the first computer based on silicon integrated circuits. [citation needed] The computer's performance was comparable to the first generation of home computers from the late 1970s, such as the Apple II, TRS-80, and ...
TCP delayed acknowledgment is a technique used by some implementations of the Transmission Control Protocol in an effort to improve network performance. In essence, several ACK responses may be combined into a single response, reducing protocol overhead. However, in some circumstances, the technique can reduce application performance.