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Interpolation of Clipping and Bit-Rate Questions., Adobe Audition Help for a Noob.
Engelsstaub
post Jun 14 2012, 03:06
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I've been testing out the trial of Adobe Audition and have noticed that it is a bit more detailed in analyzing and manipulating peaks and "clips" than Audacity. My immediate example is a needle-drop of Krisiun's "The Great Execution." (One track--1st illustration below.) The CD and iTunes Matched AAC files are a complete mess in that most of the entire recording is clipped or squashed or whatever. (Same track--second illustration below.) (Krisiun is a Brazilian "death metal" band, so there's quite a bit of sound anyway!)

LP Rip @ 16/44.1


iTunes Matched AAC file



If you look at the needledrop in the first illustration you'll notice five places (bottom/right channel) where the sound clipped for a small fraction of a second. I was thinking of zooming in and doing a simple "auto heal" on those as I'm very pleased with the sound of this album when burned to Redbook CD-R. You'll also notice that, if you look at the bottom-right of both illustrations, that Audition is working at 16-bit for the vinyl rip (recorded at 16/44) and 32-bit float for the iTunes AAC file.

Some questions: will working on those few clipped samples and exporting the results at the same bit-rate reduce the quality of the original recording? Why does Audition indicate that it is working at 32-bit float for a 16/44 AAC file while it remains at 16-bit for the FLAC?




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Engelsstaub
post Jun 15 2012, 11:27
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An Audigy SE is out for me...I do my stuff on a MacBook Pro. The cartridge is indeed the stock one (Ortofon Red) that comes pre-fitted from Pro-Ject.

I believe may "downgrade" to the newer Debut III Carbon and sell this one before I upgrade the cartridge. You mentioned the speed and that's one of the reasons I got into Pro-Ject TTs; they offer decent upgradability. However I found out that the Speedbox doesn't work with the USB model, and that was part of my long-term strategy. I haven't noticed any speed problems thus far...but then again I never really looked into it either.

I've thought about buying a quartz-driven TT like a Technics. It would certainly make cleaning a record far easier tongue.gif

When I get the proper equipment (between the preamp and the MBP) I may begin recording at 24/88.2 and archiving that way. I have a SACD/DVD-A player in my stereo system but I never really listen to anything at that resolution. So I guess I'd just be dithering for playback copies anyway.

Digital is my preference over vinyl. Sometimes I find records (such as this one) that aren't badly clipped like the CDs and would rather listen to a digital copy of it. Some records are nothing more that the CD's master turned down a bit for vinyl but still clipped. So it's just a crapshoot for me. It's really more of a hobby to keep me collecting.


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stephan_g
post Jun 15 2012, 17:06
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QUOTE (Engelsstaub @ Jun 15 2012, 12:27) *
I've thought about buying a quartz-driven TT like a Technics. It would certainly make cleaning a record far easier tongue.gif

I'll be looking for a used one - any decent middle-class model of 25 years ago is likely to be as least as good as any affordable new one.

Not accounting for inflation (40-odd %), a Dual CS505-4 costs twice as much as its predecessor in 1990, while being somewhat more cheaply made. Those used to be a common middle-class semi-automatic belt drive TT, not even anything too fancy (if solid). Now they're 500. That's what (no more) mass production does. The venerable Technics SL-1200/1210 used to be somewhat more expensive but ran out 2 years ago, certainly not due to lack of demand (I'm guessing they kept production up for as long as they could, but eventually parts ran out and people retired, and there wasn't enough money in it to restart development).

Even basically decent new models seem to have their share of problems here and there (e.g. AT-LP120-USB: complaints about bad QC and audible motor noise).

The only big problem when buying a (used) record player is shipping. Most people don't know how to package one correctly, others just shun the effort. As a result, ruined dust covers, trashed pickups, bent tonearms and even more severe damage are seen on a regular basis. Ironically, it's probably easier to get a lightweight plastic cheapie in one piece than a fancy Thorens or something.
QUOTE (Engelsstaub @ Jun 15 2012, 12:27) *
Digital is my preference over vinyl. Sometimes I find records (such as this one) that aren't badly clipped like the CDs and would rather listen to a digital copy of it.

A common position these days, and one I'd agree with. I just wish one had the option of obtaining a properly mastered CD, too...

Be sure to contribute to the DR Database if you can (at least an offline scanner for Mac does exist, though I'm not sure what the pitfalls are - the old Windows version of the offline meter had some issues with metadata).
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Posts in this topic
- Engelsstaub   Interpolation of Clipping and Bit-Rate Questions.   Jun 14 2012, 03:06
- - saratoga   QUOTE (Engelsstaub @ Jun 13 2012, 22:06) ...   Jun 14 2012, 03:14
|- - Engelsstaub   QUOTE (saratoga @ Jun 13 2012, 21:14) ......   Jun 14 2012, 04:12
- - Ron Jones   To clarify, you're bringing 32-bit float files...   Jun 14 2012, 04:36
|- - Engelsstaub   QUOTE (Ron Jones @ Jun 13 2012, 22:36) To...   Jun 14 2012, 04:47
- - AndyH-ha   Working in 32 bit floating point, even if the orig...   Jun 14 2012, 05:53
|- - Engelsstaub   QUOTE (AndyH-ha @ Jun 13 2012, 23:53...   Jun 14 2012, 06:54
|- - Engelsstaub   These are the settings I used in converting the sa...   Jun 14 2012, 08:37
- - AndyH-ha   dither bit depth 0.5 bits p.d.f. shaped triangular...   Jun 14 2012, 11:49
|- - Engelsstaub   QUOTE (AndyH-ha @ Jun 14 2012, 05:49...   Jun 14 2012, 23:38
- - stephan_g   What does the recording side look like (hardware, ...   Jun 14 2012, 23:42
- - saratoga   Assuming he has a preamp that let's him set th...   Jun 14 2012, 23:49
- - Engelsstaub   In this instance the recording was done with a Pro...   Jun 14 2012, 23:52
- - stephan_g   I doubt it is any more "premium" than yo...   Jun 15 2012, 10:51
|- - saratoga   QUOTE (stephan_g @ Jun 15 2012, 05:51) Ma...   Jun 15 2012, 19:54
|- - stephan_g   QUOTE (stephan_g @ Jun 15 2012, 11:51) An...   Jun 18 2012, 21:08
|- - Kees de Visser   QUOTE (stephan_g @ Jun 18 2012, 22:08) He...   Jun 19 2012, 08:33
|- - Engelsstaub   QUOTE (Kees de Visser @ Jun 19 2012, 02:3...   Jun 19 2012, 12:18
|- - uart   QUOTE (Engelsstaub @ Jun 19 2012, 04:18) ...   Jun 19 2012, 13:01
- - Engelsstaub   An Audigy SE is out for me...I do my stuff on a Ma...   Jun 15 2012, 11:27
|- - stephan_g   QUOTE (Engelsstaub @ Jun 15 2012, 12:27) ...   Jun 15 2012, 17:06
|- - Engelsstaub   QUOTE (stephan_g @ Jun 15 2012, 11:06) .....   Jun 16 2012, 03:01
- - AndyH-ha   Are you sure about Audition doing something at 32 ...   Jun 16 2012, 08:07
|- - Engelsstaub   QUOTE (AndyH-ha @ Jun 16 2012, 02:07...   Jun 16 2012, 08:29
|- - Engelsstaub   QUOTE (AndyH-ha @ Jun 16 2012, 02:07...   Jun 18 2012, 10:42
- - AndyH-ha   The documentation is awkward. What is "best a...   Jun 18 2012, 13:38
- - AndyH-ha   The "32 bit" in their table seems to be ...   Jun 18 2012, 13:43
- - Engelsstaub   I guess it is too generic. I suppose I was just be...   Jun 18 2012, 14:00
- - Engelsstaub   I'm glad you got it figured out I'm not ...   Jun 19 2012, 05:04


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