dBu是度量模拟信号的,而dBFS是度量数字信号的,并且dBFS不会用于度量模拟信号,所以没有在dBu和dBFS之间没有统一的转换公式,依赖于具体的数字设备。在dBu和dBFS转换时,需要规定一个峰值电压,该电压下产生的音频信号经过AD转换后得到的sample为0dBFS。例如,+18dBu对应于0dBFS,在该条件下 求 xdBu对应于ydBFS,那么就有...
As for this type of decibel you probably guess correctly again, it has a power related reference. Just like dBm, but the only difference is the wattage reference. Since dBm is very useful in describing low power outputs, for example microphones or signal processors, it is not so suitable fo...
也就是说16位无符号音频的动态范围为0 ~ -96dBFS。 dBFS 和 dBu之间的转换 dBu是度量模拟信号的,而dBFS是度量数字信号的,并且dBFS不会用于度量模拟信号,所以没有在dBu和dBFS之间没有统一的转换公式,依赖于具体的数字设备。在dBu和dBFS转换时,需要规定一个峰值电压,该电压下产生的音频信号经过AD转换后得到的sample...
reference Scale dB dBu dBV PPM ARD / IRT PPM EBU- Scale PPM UK- Scale VU UK- Scale 10207.746 V10.0 V 4123.084 V3.981 V127 112.748 V3.548 V+5 102.449 V3.162 V+4 92.183 V2.818 V+3 81.946 V2.512 V+2864 71.734 V2.239 V+1
dBrndecibel reference noise1pWelectric powerpower ratio dBμVdecibel microvolt1μVRMSvoltageamplitude ratio dBmVdecibel millivolt1mVRMSvoltageamplitude ratio dBVdecibel volt1VRMSvoltageamplitude ratio dBudecibel unloaded0.775VRMSvoltageamplitude ratio ...
telephone receiver. As it happens, when 1mW of power is dissipated in 600 Ohms, the voltage across tat termination happens to be 0.775V rms — and that's what we still use as the reference for dBu, but without the need for a 600 Ohm load (the 'u' actually stands for 'unterminated'...
LudBuReference: 0.775 V LVdBVReference: 1 V Power levelLNot used for audio! LdBm> > >ref.1 mWatohms The index u at decibel (dB) meansunloaded source, V (volt). Some say: The "u" in dBu implies also that the load impedance isunspecified, orunterminated and is likely to be high....
DBW In the field of decibels, the basis of the reference is clear at 1W db. For audio, such as microphone level level and linear level level (Line Level), the use of dBm to calculate the value is just right, if imported with dBW is not appropriate, it is too large. We only ...
(A/Bpowerpower)=10lg2=3dB,i.e.B,alargepowerthan3dB.2)theabsolutevalueofvoltageorelectricfieldintensitycanbeusedtospecifythereferencelevel.Thisreferencelevelisgenerallyreferredtoas0dB.Asdefined:1uV=0dBuV,1mW=0dBm,1mV=0dBmV.Thus,ifasignalA,whoselevelis3dBuV,isconvertedtovoltagebymeansof:3=20lgA/...
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