The ability of a smoke detector to respond to a given level of smoke.
The capacity of a system to respond to stimulation. Awareness of the needs and emotions of others to avoid hurt. [D03267] RMW
Sensitivity refers to how much power the speakers require to play a certain volume. A highly sensitive speaker will require less power than one with low sensitivity. This makes higher sensitivity more power efficient. Standard sensitivity ratings for a mid-range speaker vary from around 85 dB (decibels: unit of measuring volume) to 95 dB per 1 watt of power.
the ratio of the output value to the input value.
Refers to the Output of a Speaker given a Specified amount of Power. Measured in dB's and at a distance of usually 1 meter. A Sensitive Speaker fed with 1 Watt of Power and Producing a 90dB output, would be twice as loud as an Insensitive Speaker given the same amount of Power but only Producing 80dB.
The ratio of the output of an instrument to the input value, i.e. a rain gauge with a sensitivity of 1 tip per 0.01".
A measure of how much sound a speaker produces for a given amount of input power. speaker sensitivity is measured by driving a speaker with 1W of power and measuring the sound-pressure level from a distance of 1 meter.
Of a camera, usually specified in LUX, should be the amount of light falling upon an imaging device to produce a video signal of 1-volt peak to peak. Confusingly, it is often referred to as the amount of light at the lens, which is not technically accurate and can be misleading unless the lens specification is provided in detail, including its light transmission value.
1. The ability of a microphone to pickup very quiet sounds results in a higher sensitivity number. 2. The ability for a speaker to produce a louder sound when fed the same amount of power as another speaker. The SPL output for a given input level (usually tested with 1 watt of input power with a test instrument 1 meter directly in front of the speaker). 3. The ability of a wireless microphone receiver to pickup very weak RF signal levels.
The ratio of a change in response to a change in an undesirable or secondary input (as the scale factor variation to a unit of power supply voltage change).
The ability of a shortwave radio to repond to weak signals. It is measured in microvolts. The lower the measurement in microvolts, the fainter the signal the radio can receive.
The degree to which an indicator responds to the changes in the market. For example, the rate-of-change of the moving average in response to the movement of the market.
A proportionality constant that relates the output of a sensor to the input.
Response of an electrical circuit or transducer to a given input. Speaker sensitivity is tested by driving the speaker with a broadband signal at a strength of 2.83 volts, or 1 watt, and measuring the acoustical output of the speaker at a distance of one meter. Often referred to interchangeably as efficiency.
The amount of change in a variable produced by a given change in a factor input (eg. a change in earnings per share caused by a change in interest rates or A$).
The rating of a loudspeaker that indicates the level of a sound intensity that the speaker produces (in dB) at a distance of one meter when it receives one watt of input power. Also sometimes incorrectly called efficiency, sensitivity is a measure of how much volume a speaker can produce when given a 2.83 volt (1 watt) signal. Although this specification has nothing to do with sound quality, speakers with higher sensitivity numbers may help you make the most of the amplifier power you've got.
Light level required to gain a full video signal from the camera. usually specified in LUX.
In wired microphones, phono cartridges, etc., the amount of output for a given input. In RF receivers, the amount of input signal a device requires in order to produce a reference quality of output.
How well a radio can receive signals. Some radios are more sensitive than others, meaning they'll pick up more stations from further distances.
This is a measure of how much you get out for what is fed in. Buying speakers that are more sensitive can save you money on amplification if loudness is your bag.
is often used to describe a particular detector's ability to find small targets. It is also a term used to describe the output power of a detector. Some operators make the wrong assumption that more sensitivity means more depth. In hot ground, reducing the sensitivity will provide you with a smoother background threshold, allowing you to hear a deep target response.
The minimum light level required at the CCD chip in a camera to generate a usable video picture
The measure of sound pressure level produced at a distance of 1 metre for a given input voltage of 2.83V (equivalent to an input power of 1 watt for an 8 ohm load).
the slope of the response (calibration) curve expressed as output per unit concentration.
the ability to respond to physical stimuli or to register small physical amounts or differences; "a galvanometer of extreme sensitivity"
the ability to respond to affective changes in your interpersonal environment
a measure of the relative efficiency of a speaker or loudspeaker system, often expressed as the number of decibels the unit will produce fed from a 1-watt signal measured at a distance of 1 meter.
Sensitivity is a measure of the minimum signal that a telescope can distinguish above the random background noise. All other things being equal, a telescope of larger primary mirror or lens is more sensitive than one with a smaller primary.
Usually measured in decibels. In speakers it is expressed as a sound pressure level for a standard unit of power, one Watt, at a distance of one Meter.
The ability of a receiver to pick up low-amplitude signals.
A term used to indicate how well a metal detector responds to small targets. Also, a variable control to adjust the detector's response to all targets, especially small, low-conductive ones.
The minimum change in input signal required to produce an output change in the controller.
This is a manual adjustment that allows users to fine-tune the fish finder to see the most underwater detail with the least visual noise. For anglers who'd rather spend more time fishing than adjusting, Advanced Signal Processing does this automatically, and is a feature of all Eagle sonar units.
A measure of the ability of a receiver to respond to weak signals.
A measure of the efficiency of a loudspeaker. A typical sensitivity figure for a loudspeaker is 87dB. A high sensitivity 94dB or more. A low sensitivity is 80dB or less. (See Efficiency). Low sensitivity loudspeakers require a high amplifier power output to obtain realistic volume levels. High sensitivity loudspeakers will be happy working with low power output amplifiers (20W per channel maximum or lower).
The quantity of input signal level usually specified to allow the amplifier to go to full power with all the controls up.
A standardized measure of the sound output of a loudspeaker for a known input signal. Originally, the input power was 1 watt. Nowadays, the input is standardized to 2.83 volts (1 watt into 8 ohms). Measurements are made on axis in an anechoic space, at a distance that places the microphone in the far-field of the loudspeaker system, and then the sound pressure level is calculated for a microphone distance of 1 meter. A measurement distance of 1 meter is too close for all but single drivers and very small loudspeaker systems. See also: Far Field, Input Sensitivity.
In model application, the degree to which the model result is affected by changes in a selected model input representing hydrogeologic framework, hydraulic properties, and boundary conditions.
The minimum signal level that can be successfully captured and decoded by a receiver, specified in dBm.
A measure of the minimum electromagnetic signal that can be reliably identified by the receiver. This value is typically established in controlled conditions in the laboratory.
The loudness of a speaker at a given voltage. Usually measured at 2.83 volts, at 1 meter straight in front of the speaker and excluding reflected energy.
The sound pressure level directly in front of the speaker (on axis) at a given distance and produced by a given amount of power.
A rating given in dBV to express how "hot" the microphone is by exposing the microphone to a specified sound field level (typically either 94 dB SPL or 74 dB SPL,). This specification can be confusing because manufacturers designate the sound level different ways. Here is an easy reference guide: 94 dB SPL = 1 Pascal = 10 microbars. To compare a microphone that has been measured at 74 dB SPL with one that has been measured at 94 dB SPL, simply add 20 to the dBV rating.
amount of voltage output per unit of parameter measured.
How well a headphone responds (in volume) to the electrical signal feeding it. The greater the sensitivity of a headphone, the higher the volume level produced by a headphone.
Sensitivity refers to the minimum amount of light needed for the pick-up device to operate
At a set gain, the sensitivity of an electron multiplier is the level of output for a given amount of input signal (not to be confused with gain which is the multiplier's amplification).
The capability of a controller to measure and respond to variations in a controlled condition.
1) Volume of sound delivered for a given electrical input. 2) In microphones, the output level produced by a standard amount of sound pressure level.
The degree of the response of the output of mathematical models to a change of the magnitude of the input parameter(s).
A measurement (in dB) of the sound-pressure level over a specified frequency range created by a speaker driven by 1 watt (2.83V at 8 ohms) of power with a microphone placed 1 meter away.
Given a Boolean function f:{0,1}n-{0,1}, the sensitivity sX(f) of an input X=x1...xn is the number of variables such that flipping them changes the value of f(X). Then s(f) is the maximum of sX(f) over all X.
The sensitivity of a receiver is taken as the minimum signal level required to produce an output signal having a specified signal-to-noise ratio.
The ratio of the change in output to the mechanical input.
A camera's ability to reproduce a given scene with a given amount of light. Usually expressed in foot-candles or lux.
the degree to which a system will respond to a change in climatic conditions (e.g., the extent of change in ecosystem composition, structure and functioning, including net primary productivity, resulting from a given change in temperature or precipitation)
Measure of the ability of metal detector to sense the electromagnetic field around a target. Detector's sensitivity measures its ability to find small targets. In normal conditions higher sensitivity also corresponds to greater depth
The degree to which a detector responds to electromagnetic energy incident upon it.
The minimum input signal required to produce a specified level of output
A standardized speaker measurement that determines how loud a system will sound under controlled conditions. The standard procedure agreed upon by the industry is output, in dB at 1 meter with 2.83 volts applied, which will amount to 1 watt at 8 ohms (2 watts at 4 ohms). while sensitivity has little bearing on overall sound quality, it will be a factor in determining the required amplifier power.
The minimum change in input signal to which an instrument can respond.
A measurement of how much power is required for a loudspeaker to achieve a certain output level. The general standard used is on-axis SPL (Sound Pressure Level) at 1 watt input, 1 meter distance.
Reference efficiency value of a speaker; it is measured in decibels and at a distance of one meter, with 2.83 Volts in the input.
A measure of the amount of input signal a device requires in order to produce a standard output level. Example: Response of a microphone to sound pressure.
A term used to describe the required light level needed to produce a desired signal.
A measurement of how loud a speaker will play with a given amount of amplifier power. Higher dB (decibel) ratings mean speakers will play louder given the available amplifier power. While greater sensitivity is a good thing, it has NOTHING to do with sound quality.
(pickup device) The amount of current developed per unit of incident light. It can be measured in watts with the projection of an unfiltered incandescent source of light at 2870 K degrees to the pickup device surface area. It can be then expressed in foot-candles.
The minimum input required to produce output motion or the ratio between output motion and input drive. Applicable particularly to manually actuated motion devices.
The degree to which economic conditions respond to certain stimuli. For example, employment demand in the trucking and warehousing industry might be particularly sensitive to fuel prices.
A measure of a receiver's ability to viably receive weak radio signals.
In television, a factor expressing the incident illumination upon a specified scene required to produce a specified picture signal at the output terminals of a television camera.
The amount of responsiveness to an incident light on the pickup device (CCD) on a camera, indicating how much the device is affected or changed by light.
Related to efficiency, speaker sensitivity is specified in terms of the sound pressure level (SPL) in decibels, generated at a specific distance from the speaker when a specified signal level is applied.
A measure (in decibels of sound-pressure level) of how much sound comes out when 1 watt of power is put in. The measuring microphone is placed one meter away from the speaker.
Change in the response of a measuring instrument divided by the corresponding change in the stimulus. Sensitivity is the minimum input that will result in a discernible change in input.
Similar to responsivity of a camera sensor but numerically different. It is the signal current per unit of illuminance on the faceplate in lumens. It is expressed in amps/lumen. Unless otherwise specified, the radiation is understood to be that of an unfiltered incandescent source at 2,856 degrees K.
1. The input signal level required by a tuner, amplifier etc, to be able to produce a stated output. The lower the necessary output, the higher the sensitivity required.
Generally refers to detector sensitivity, which is the ability of the detector to give larger bands (other factors equal) and a better signal-to-noise ratio. This provides more precise analyses of very small concentrations of sample.
A measure of the minimum amplitude of input signal change to which an instrument will respond. This is a measurement of thermal resolution.
A pacemaker parameter which determines the amplitude of signals to which the device's sense amplifiers will respond. Sensitivity is stated in millivolts. Note that the higher the millivolt value, the lower the sensitivity. (If sensitivity is 6 mV, a signal has to be 6 mV or larger before the signal is recognized; on the other hand, if sensitivity is 2 mV, a signal only has to be 2 mV or larger before it is recognized. Thus the lower the mV value, the more sensitive the device.)
For a fiberoptic receiver, the minimum optical power required to achieve a specified level of performance, such as BER.
The sound pressure level a speaker produces when fed by a given input power, measured at a specific distance on axis directly in front of the speaker. Typically specified in dB SPL at 1 meter with 1 watt of input signal.
For an ammeter, the amount of current that will cause full-scale deflection of the meter. For a voltmeter, the ratio of the voltmeter resistance divided by the full-scale reading of the meter; expressed in ohms per volt. The ability of a receiver to reproduce very weak signals. The greater the receiver sensitivity, the weaker the signal that can be reproduced. (4) Efficiency of a microphone. Describes microphone power delivered to a matched-impedance load as compared to the sound level being converted. Usually expressed in terms of the electrical power level.
A measurement of the sound output of a speaker or speaker system's output relative to the power put in. Typically measured in dB at 1 watt of input, 1 meter away.
The ratio of change in transducer output to a change in the value of the measurand.
The volume that a speaker will offer for a specific voltage input, expressed in decibels per watt (dB/W).
For a fibre optic receiver, the minimum optical power required to achieve a specified level of performance, such as bit error ratio.
A receiver's sensitivity is a measure of its ability to discern low level signals.