# Bit rate

Discussion in 'Recording' started by nihility0000, Oct 23, 2006.

1. ### nihility0000Guest

When recording sound at 44,100hz/ 24 bit, at what decibel point do you start to loose bits?

2. ### KevWell-Known Member

sample rate
bit depth

yes please do a search as this subject is well covered

:roll: ??
you don't loose bits ... at above or below a decibel level

do the search then ask a new question if you still need to

3. ### nihility0000Guest

oh ok thanks..... my apologies.

4. ### sheetWell-Known Member

You don't lose bits.

If you are recording in 24-bit mode, that is what you are going to have. Well, it's like 20 and some change really. But, you will have 24-bit representation of the signal sampled at 44,100 times per second.

5. ### nihility0000Guest

it was my understanding that you loose 1 bit per every 0.6db under 0.0 like if you recorded a signal that averaged at -1.2 the bit depth for that sound would be 22bit.

maybe i didnt understand completely...

thanks for clearing it up for me. this forum always seems to help.

6. ### KevWell-Known Member

don't think of it that way

not worth the brain space
just use the 24 bit headroom sensibly and convert to 16 when you need to
there is lots more worth worrying about than the intricacies of the math

7. ### dementedchordWell-Known Member

[quote="Kevthere is lots more worth worrying about than the intricacies of the math[/quote]

ah...come on mate... shirly we can have another go.....

8. ### David FrenchWell-Known Member

ONe bit will give you approximately 6 dB of dynamic range. So, for 16 bit recordings, that's about 96 dB, and for 24 bit, that's 144.

Those are big numbers.

9. ### TeddyGWell-Known Member

Clear and consise, Mr. French(Nice to see you!).

Does this mean that if I do all my work at 32 bit(Internally) that to somehow "squash/loose", whatever, any "necessary" dynamic range in a piece I plan to eventually use at, say 16/44.1, I'll really have to work at it?

Teddy G.

10. ### KevWell-Known Member

lol ... nooooo .....
:wink:

32 and 48 internal math is about calculations for the mixer and plugs

as Dave said you have up to 144dB dynamic range to work with at the front door and if you capture adequately you will need to squash to get to typical CD mastered variations anyway

to lose a bit or 2,
and if you did it's just not an issue for typical pop/modern music
:roll:
... just maybe if you were in the Orchestral World of direct to two track ...
do
look for typical analog clipping diring capture and digital clipping during mix
and all along the way let the digital headroom bounce between -20dBFS and say -3dBFS and let the equipment do it's job

even if you did have ONE track with a digital clip ... or an -0.01dBFS
and you can't hear a problem ... let it go IF it is a good take.

it's all good

11. ### dementedchordWell-Known Member

btw.. i read something the other day about a new 1-bit system that samples at a hair over 5Mhz... talk about a lovely bit of masturbation.... there's also a european recording thats been circulating... anyone hear it???