how much we could allow boosting or normalizing audio in D..

bj

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If I recorded as 16bit format and boosted it in DAW, I would have a
downgrade bitrate audiofile less than 16bit audio.
i would have assumed that this phenomenon is the same as digital
picture is downgraded when it is magnified in digital domain
then, if i recorded as 24bit format, and wanted to change it as 16bit
quality audio format by boosting or normalizing it in DAW, how much
should I boost it in DAW by DBFS?
 
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you're applying your digital photo metaphor incorrectly.

think of it like this:
you have a digital photo that was scanned at 600dpi. then import it
into your photoshop layout, which you have set to be 1200dpi.

you haven't lost anything at that point...you simply have "extra
resolution" that hasn't been put to good use yet.

then, when you start to add your special photo effects like "liquid" or
"melt" you now have more resolution in your processed picture.

understand?
 
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"bj" <bluesjeon@hotmail.com> wrote in message
news:1c7c168a.0502091915.2749b332@posting.google.com

> If I recorded as 16bit format and boosted it in DAW, I would have a
> downgrade bitrate audiofile less than 16bit audio.

Do you think that this would necessarily be a problem?

> i would have assumed that this phenomenon is the same as digital
> picture is downgraded when it is magnified in digital domain

The concept is similar but not exactly the same.

> then, if i recorded as 24bit format, and wanted to change it as 16bit
> quality audio format by boosting or normalizing it in DAW, how much
> should I boost it in DAW by DBFS?

Obviously, you always boost a signal to suit your purposes. Most people
listen to it and pick an amount of boost that provides the sound level that
they desire.
 
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bj <bluesjeon@hotmail.com> wrote:
>If I recorded as 16bit format and boosted it in DAW, I would have a
>downgrade bitrate audiofile less than 16bit audio.

Right. You'd lose dynamic range. But you have 96 dB to play with.
You can afford to lose a little.

>i would have assumed that this phenomenon is the same as digital
>picture is downgraded when it is magnified in digital domain
>then, if i recorded as 24bit format, and wanted to change it as 16bit
>quality audio format by boosting or normalizing it in DAW, how much
>should I boost it in DAW by DBFS?

Every single-bit shift is a 6 dB change on the meter.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."
 
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In article <1c7c168a.0502091915.2749b332@posting.google.com> bluesjeon@hotmail.com writes:

> If I recorded as 16bit format and boosted it in DAW, I would have a
> downgrade bitrate audiofile less than 16bit audio.

Any sample that doesn't reach full scale is less than 16 bits. 16-bit
audio is defined by the maximum word length.

> i would have assumed that this phenomenon is the same as digital
> picture is downgraded when it is magnified in digital domain

You can always abuse the technique. If the orignal recording never
peaked above about -50 dBFS and you boosted it by 50 dB, it would be
pretty noisy and grainy. Same if you made an analog recording that
never peaked above -50 VU and you boosted it by 50 dB (only the
digital recording would sound bad in a little different way).

You can determine yourself how much you can get away with. Why don't
you try some experiments?


--
I'm really Mike Rivers (mrivers@d-and-d.com)
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me here: double-m-eleven-double-zero at yahoo
 
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