R
Radium
- Jan 1, 1970
- 0
Can a wave file with stronger bit-resolution handle more decibels
w/out clipping than a wave file with weaker bit-resolution?
w/out clipping than a wave file with weaker bit-resolution?
w/out clipping than a wave file with weaker bit-resolution?
The dynamic range is
approximately 6 dB per bit.
So a digital audio device with a bit-resolution of 100-bit can handle
up to 600 dB w/out clipping. Right?
So a digital audio device with a bit-resolution of 100-bit can handle
up to 600 dB w/out clipping. Right?
OOOOOOOOOPS!!!!!
I forgot to add that this theoretical digital audio device also
contain a 100-bit DAC. Sorry.
Only if the analogue gear it's attached to can cope with this range!
Only if the analogue gear it's attached to can cope with this range!
Which will of course have an output dynamic range of less than 22
bits, as with all available '24 bit' DACs...................
Why?
Why?
Speaking of digital vs. analog, analog clipping isn't as harsh as
digital clipping. However, CDs have a dynamic range of approx. 90dB
and tapes have it at about 60dB. This means a CD can handle 90 dB
w/out clipping, while a tape can only handle 60dB. Right?
You mean the DAC?
Speaking of digital vs. analog, analog clipping isn't as harsh as
digital clipping.
However, CDs have a dynamic range of approx. 90dB
and tapes have it at about 60dB. This means a CD can handle 90 dB
w/out clipping, while a tape can only handle 60dB. Right?
Why?
Why?
Well, now, think about it. What do YOU think 600 dB means?
Well, if you haven't gotten there, 600 dB means there is a factor
of 1,000,000,000,000,000,000,000,000,000,000 between the amplitudes
of the smallest and largest representable signals. That's 10^30
power.
Fine, so figure out what THAT means.
Okay, didn't bother to go there yet? Fine.
Let's look at hooking up a h-fi system to this rather silly device.
Let's assume that you have adjusted the volume control so that the
very smallest signal this device can put out generates a sound that
is 1/100 as loud as the faintest signal you can hear, that is, at
a sound pressure level of -20 dB re 10^12 watt/m^2 (that's a trillionth
of a watt per square meter).
Fine. How loud can it play? Well, according to you, 600 dB -20 dB or
580 dB SPL. Great, what does THAT mean?
Well, if it's 580 dB above 1 trillionth of a watt, that's 10^27 watts
per square meter of acoustical power. Let's just, for the sake of
simplicity, assume the entire acoustical radiation is confined to that
1 square meter The amount of acoustic power you want to put into that
small area is something like 1,000,000,000,000,000 times greater then
the entire amount of electrical power consumed by the entire United
States for all conceivable and inconceivable reasons. And let's assume that
your speakers are pretty efficienct, say 10%. That means you are going
to have to find yourself an amplifier capable of putting out somewhere
in the range of 10,000,000,000,000,000 watts. Assume such an amplifier
is running at about 40% efficiency. How much power would you need?
Well, the entire output energy output of the sun is probably insufficient
to the task.
Got it?
Per said:I can see the ad in front of me: "The new Gizmo 600dB amp will
outperform the sun!"
Per.
Radium said:[email protected] (Stewart Pinkerton) wrote in message
Speaking of digital vs. analog, analog clipping isn't as harsh as
digital clipping.
However, CDs have a dynamic range of approx. 90dB
and tapes have it at about 60dB. This means a CD can handle 90 dB
w/out clipping, while a tape can only handle 60dB. Right?