noise gain

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• Noise figure — (NF) is a measure of degradation of the signal to noise ratio (SNR), caused by components in a radio frequency (RF) signal chain. The noise figure is defined as the ratio of the output noise power of a device to the portion thereof attributable… …   Wikipedia

• Gain compression — in an electronic amplifier circuit is a reduction in differential or slope gain caused by nonlinearity of the transfer function of the amplifying device. This nonlinearity may be caused by heat due to power dissipation, or by overdriving the… …   Wikipedia

• Noise-immune cavity-enhanced optical heterodyne molecular spectroscopy — (NICE OHMS) is an ultra sensitive laser based absorption technique that utilizes laser light to assess the concentration or the amount of a species in gas phase by absorption spectrometry (AS). Contents 1 Principles 1.1 Types of signals 1.2… …   Wikipedia

• Noise-Immune Cavity-Enhanced Optical-Heterodyne Molecular Spectroscopy — (NICE OHMS) is an ultra sensitive laser based absorption technique that utilizes laser light to assess the concentration or the amount of a species in gas phase by absorption spectrometry (AS). Principles The NICE OHMS technique combines in a… …   Wikipedia

• Noise temperature — In electronics, noise temperature is one way of expressing the level of available noise power introduced by a component or source. The power spectral density of the noise is expressed in terms of the temperature (in kelvins) that would produce… …   Wikipedia

• Noise (electronics) — Electronic noise [1] is a random fluctuation in an electrical signal, a characteristic of all electronic circuits. Noise generated by electronic devices varies greatly, as it can be produced by several different effects. Thermal noise is… …   Wikipedia

• Noise — F/A/V In audio systems, noise is the electrical interference or other unwanted sound introduced into the system (i.e. hiss, hum, rumble, crosstalk, etc). (Sound) A&V Unwanted disturbance within an electronic system. Interference present in a… …   Audio and video glossary

• Gain — F/A/V The ratio of the signal level at the output of an audio device to the signal level at its input. Expressed in decibels (db). A&V Any increase or decrease in strength of an electrical signal. Gain is measured in terms of decibels or number… …   Audio and video glossary

• noise gate — /ˈnɔɪz geɪt/ (say noyz gayt) noun an electronic device which reduces the gain of an amplifier when an incoming signal, as from an electronic musical instrument, drops below a preset level and increases it when the signal rises above it again,… …  

• Image noise — Noise clearly visible in an image from a digital camera Image noise is random (not present in the object imaged) variation of brightness or color information in images, and is usually an aspect of electronic noise. It can be produced by the… …   Wikipedia

• Automatic gain control — (AGC) is an adaptive system found in many electronic devices. The average output signal level is fed back to adjust the gain to an appropriate level for a range of input signal levels. For example, without AGC the sound emitted from an AM radio… …   Wikipedia