Yes. And reference exponential growth of covid infections to give them something to chew on...
One of the many situations when humanity fucked up by having zero comprehension of exponential growth.
Yes. And reference exponential growth of covid infections to give them something to chew on...
In the case of 130 db, that represents a ratio of more than 3 million to one. If full scale is 2 volts then the -130 db value is a bit less than .65 millionths of a volt.
What's a Volt?
One of these might be the one definition we are looking for:What's a Volt?
I'd make several sample files with Audacity (or your favorite audio editor) each one reduced by 20dB. (Of course, export as 24-bits if you're going to -130dB).Lets say you have a DAC where the jitter is at -130dB or lower. How you would explain to somebody who is not familiar with audio how good that is?
That's the one RayDunzl is looking for I think and of course, the next question is what is an Ampere. That would be one Coulomb of charge going through a conductor every 1 second. How about a Coulomb? We need charged particles to help define that. I think one electron is supposed to have 1.6*10^(-19) Coulomb worth of charge.The SI-derived unit of electric potential and electromotive force, equal to the difference of electric potential between two points on a conducting wire carrying a constant current of one ampere when the power dissipated between the points is one watt.
Is your brother a tree?I am 2m tall. My brother is 20m tall. How much taller is my brother than me?
You should've watched the video before replying to me but I appreciate the explanationIs your brother a tree?
That's true for a dbP, but not for a dbV. Most of the specs that Amir measures here are voltage, where every 10x change is 20 dB.Tell them every 10db is a 10x change. So +20db is 100 times, (-20 is 1/100 change) +30db is 1000, so +130db is a 1 with 13 zeros after it.
It can be used to explain that two values are both crazy good. Not to explain why one sounds better.You shouldn't try, because it would not be true. That DAC is sonically indistinguishable from any other properly functioning one.
Don't promote audiophoolery.
I think this is a good way. If you add that the voltage determines how loud something is it becomes even more clear what kind of differences we are talking about.This is the right approach. First off db is a ratio, and if you can get across the idea of a log scale and that db is a ratio on the log scale you'll have it.
In the case of 130 db, that represents a ratio of more than 3 million to one. If full scale is 2 volts then the -130 db value is about .63 millionths of a volt.
Is that because natural logs are more analog like?just be sure to emphasize that natural logs are much better than the other kind
Play them this: https://www.audiocheck.net/audiotests_dynamiccheck.php . It goes "only" to -90 dBFS, but should be illustrative enough.Lets say you have a DAC where the jitter is at -130dB or lower. How you would explain to somebody who is not familiar with audio how good that is? I feel this is something that could be communicated in a better way.
Ok, so human hearing is most sensitive around 3 kHz. In attachment there are 4 files, each contains G7 note (3136 Hz) beeps, 2 beeps per level, the levels are decremented by 6 dB. The files are -60 to -78, -78 to -96, -96 to -114 and finally -114 to -132 dBFS. At what point do you (or them) stop hearing the beeps when listening at your usual volume?It goes "only" to -90 dBFS, but should be illustrative enough.