Support and General Use > Recording

20 BIT ??

<< < (4/6) > >>

saratoga:

--- Quote from: whatboutbob on January 14, 2007, 04:38:10 PM ---
Also, saratoga, I might be misinterpreting your post, and it has been a very long time since I tested...but i believe, particularly running spdif-in, the iriver noisefloor is significantly better than 60dB.

--- End quote ---

60dBA == accoustic noise, not electrical noise.  At a concert, you will be limited by the noise of the event, not the electronics (and certainly not the software).


--- Quote from: whatboutbob on January 14, 2007, 04:38:10 PM ---By the by, this may or may not be on topic, but below is a post from over at taperssection about level setting with 24 bits - it is lengthy but kinda outlines the virtues of the extra bits

--- End quote ---

Actually he concludes that its useless, and I agree with him.

That said, hes a little off on one of the arguments in favor of higher bits:


--- Quote ---Well, what do you do when you want to EQ something +2db? Where does that 2db go? Into clipping of course, unless you lower the input level of the plug in, which is going to lose any hypothetical S/N benefit you had preserved anyway.

--- End quote ---

Any good EQ normalizes downward, not upward.  So if you want to EQ to +2dB, the entire track gets lowered by 2dB, and then the EQ is applied. This way you don't clip.

mlind:

--- Quote from: saratoga on January 14, 2007, 07:47:28 PM ---60dBA == accoustic noise, not electrical noise.  At a concert, you will be limited by the noise of the event, not the electronics (and certainly not the software).
--- End quote ---
So you want that acoustic noise to be recorded and stored by 4-5 bits?

And not all of us use Rockbox to record music without any dynamics!
60 dB? Not the things that I usually record.

One of the most notable advantages with higher resolution in recordings is the way reverbtails sound when they fade out into the noise from the acoustic environment or analog recording equipment, as opposed to the digital noise of having too few bits for your recording.

--- Quote ---Any good EQ normalizes downward, not upward.  So if you want to EQ to +2dB, the entire track gets lowered by 2dB, and then the EQ is applied. This way you don't clip.
--- End quote ---
That's not "any eq".
I want to control any aspect of the eq myself.

saratoga:

--- Quote from: mlind on January 15, 2007, 11:51:41 AM ---
--- Quote from: saratoga on January 14, 2007, 07:47:28 PM ---60dBA == accoustic noise, not electrical noise.  At a concert, you will be limited by the noise of the event, not the electronics (and certainly not the software).
--- End quote ---
So you want that acoustic noise to be recorded and stored by 4-5 bits?

And not all of us use Rockbox to record music without any dynamics!
60 dB? Not the things that I usually record.

--- End quote ---

You appear to have not read anything I wrote.  Please reread my original post about dither, rather then assuming I'm talking about dynamics or whatever it is you're posting about.


--- Quote from: mlind on January 15, 2007, 11:51:41 AM ---One of the most notable advantages with higher resolution in recordings is the way reverbtails sound when they fade out into the noise from the acoustic environment or analog recording equipment, as opposed to the digital noise of having too few bits for your recording.

--- End quote ---

Yes but as I and the previous poster already explained, this is not an issue here.  Please read the thread.


--- Quote from: mlind on January 15, 2007, 11:51:41 AM ---
--- Quote ---Any good EQ normalizes downward, not upward.  So if you want to EQ to +2dB, the entire track gets lowered by 2dB, and then the EQ is applied. This way you don't clip.
--- End quote ---
That's not "any eq".
I want to control any aspect of the eq myself.

--- End quote ---


I don't even know what this is supposed to mean.  The ability of EQ to avoid introducing clipping is essential to actually using EQ.  This has nothing to do with "control".

jhMikeS:
It probably wouldn't be too hard to introduce other depths into recording. I kind of had it in mind while implementing the updates but don't see any real advantage with the S/N ratios in the chips hardly making 16 bits. I doubt it would bring about stability issues. The real tricky part of it all was being sure I covered all the possible cases in delaying file creation.

The pcm formats will need 24 bits/sample since a sample must be an even byte size. AIFF needs them left-justified and WAV I don't know atm.

mmdats:
Please let me try to record at whatever bitrate you can give me.  If it says 24 and is actually truncated to 20 bit I would be happy anyway.

Luke

Navigation

[0] Message Index

[#] Next page

[*] Previous page