The vague human feeling of the double loudness (volume) is specified There is also the reference power P 0 = 1 milliwatt or 0.001 watt ≡ 0 dB m Level in psycho acoustics as subjectivly perceived loudness (volume) The voltage is always given as RMS value - but that is not valid for electric power. To use the calculator, simply enter a value. The expressed power gain in dB (power amplification) at the cutoff frequency f c isġ0 × log 10 (½) = (−)3.0103 dB less than the maximum power gain. The expressed voltage gain in dB (voltage amplification) at the cutoff frequency f c isĢ0 × log 10 (1/√2) = (−)3.0103 dB less than the maximum voltage gain. Voltage/PressureĪt the cut-off frequency f c the dropped voltage is always fallen to the value ofġ/√2 = 0.7071 (70.7%) and the voltage level L is damped to 20 × log 10 (1/√2) = (−)3.0103 dB.Īt the cut-off frequency f c the dropped power is always fallen to the value ofġ/2 = 0.5 (50%) and the power level L is damped to 10 × log 10 (½) = (−)3.0103 dB. In audio technique the following 'power or energy amplification ' is rather unusual. The calculator works in both directions of the ↔ sign. If you search for the amplification ratio, given the dB value,Īmplification (Gain) and Damping (Loss) To use the calculator, simply enter a value. Using power we get: Level in dB: L = 10 × log (power ratio) 3 dB = twice the power Power gain is really not used in audio engineering.ĭo we really need power (energy) amplification? Leave that to the telephone companies or the transmitting aerials (antennas). If we consider audio engineering, we are usually not interested in power.ĭo not ask what power amplification means. Pricewatcher 1 2 16 = Using voltage we get: Level in dB: L = 20 × log (voltage ratio) This naturally leads to sign errors when entering numbers. In physics, attenuation is regarded as a positive value. L = 20 × log (voltage ratio V 2 / V 1) in dB. The amplification or the damping in dB is: V 2 / V 1 or V out / V in means the ratio. V 2 > V 1 or V out > V in means amplification. In analog audio engineering we deal only with 'voltage' amplification (gain) and damping (loss). The program is indicated, but the actual function is missing. The damping factor, also called loss, is the extent to which a device reduces the strength of a signal.Įnter two values and press the right calculate bar in the line of the missing answer The used Browser supports no Javascript. The amplification factor, also called gain, is the extent to which a device boosts the strength of a signal. Resistors) or volume controls, that allow you to adjust the incoming signal to the Gain controls on an amplifier are basically just small potentiometers (variable Gain is the ratio between the magnitude of output and input signals.
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