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Audio from vinyl (24 / 96-192 khz). Converting/downsampling?
Taishou
post Aug 27 2012, 03:01
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Hi again

I have several digitized vinyls in FLAC, at 24 bit, 96-192 khz. Is it worth all that sample rate? I was thinking of making CD quality (16/44.1) FLACs or even mp3 320. I doubt I'll ever in my life spend more than, idk, 200 usd in headphones, so the over-quality looks a waste. What do you say? I'm far from an audiophile and I feel pretty happy with mp3 320 (I can't even tell from FLAC).

Anyway, I need to re-encode that at least for my mobile devices. Should I have any special care when converting? I use fre:ac (LAME 3.99.5). Should I just set 44.1 khz when encoding there and done? Or should I downsample with another tool and then encode? I just tried encoding something setting 44.1 in LAME and the result sounds the same as the original 24/192 (with my crappy headphones at least).

The same goes for FLAC or ogg (I tend to use the latter for my DAP). Just setting the sample rate when encoding is enough or is it better to do it with another program? (I doubt, but I wouldn't like regretting later because I made a crappy conversion).

Thanks!


(maybe this should go in the "vinyl" forum, but my concern is more with those high sample rates and downsampling, regardless the source)
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Taishou
post Aug 27 2012, 20:56
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Group: Members
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Great answers, thanks. I just read the links you posted. I see now why go for 16 bits 48 khz. The recordings are quite clear, the little cracks and ticks from the LP are quiet enough, barely audible. The conversion from the vinyl is quite good. No further editing seems necessary, so keeping larger files is pointless as I understand.

Now, what's the best way to reduce the bit depth? Dither or not? Is foobar's option in the conversion for the output bit depth enough? I'd like a simple, but effective, solution that can be made in batchs (like SoX resampler in foobar). I'll try a ReplayGain to check the peak levels when I get home. If they stay above -6 db it's ok to go for 16 bits then? What would you do for getting 24 to 16?

For resampling I'll stick with SoX. It appears good enough from what I read.
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- Taishou   Audio from vinyl (24 / 96-192 khz). Converting/downsampling?   Aug 27 2012, 03:01
- - Porcus   QUOTE (Taishou @ Aug 27 2012, 04:01) I ha...   Aug 27 2012, 06:16
- - Taishou   I see... Thinking about it I'll stay with FLA...   Aug 27 2012, 06:57
- - Taishou   Sorry for the double post, I can't see an ...   Aug 27 2012, 08:25
|- - Porcus   Go 44.1 or 48, as those are the well-supported sam...   Aug 27 2012, 10:14
||- - db1989   QUOTE (Porcus @ Aug 27 2012, 10:14) [Oh ....   Aug 27 2012, 14:38
|- - splice   QUOTE (Taishou @ Aug 26 2012, 23:25) ... ...   Aug 27 2012, 21:37
- - jensend   Try the FAQ for good info and advice. Also this pa...   Aug 27 2012, 16:45
|- - benski   QUOTE (jensend @ Aug 27 2012, 11:45) The ...   Aug 28 2012, 18:37
|- - Woodinville   QUOTE (benski @ Aug 28 2012, 10:37) QUOTE...   Aug 29 2012, 03:27
|- - krabapple   QUOTE (Woodinville @ Aug 28 2012, 22:27) ...   Aug 31 2012, 14:08
- - jensend   Oh, BTW: resampling in multiple stages is unlikely...   Aug 27 2012, 17:06
- - Taishou   Great answers, thanks. I just read the links you p...   Aug 27 2012, 20:56
- - jensend   If you're already using SoX, no reason to not ...   Aug 28 2012, 00:09
- - Taishou   QUOTE (splice @ Aug 27 2012, 17:37) QUOTE...   Aug 28 2012, 05:40
|- - Porcus   QUOTE (Taishou @ Aug 28 2012, 06:40) Afte...   Aug 28 2012, 07:42
|- - jensend   QUOTE (Taishou @ Aug 27 2012, 22:40) Afte...   Aug 28 2012, 17:34
- - db1989   Itís a result of one of audioís many compound myth...   Aug 28 2012, 07:09
- - Woodinville   There is some use to that over-20kHz stuff, though...   Aug 28 2012, 08:16
- - Arnold B. Krueger   QUOTE (Taishou @ Aug 26 2012, 22:01) I ha...   Aug 28 2012, 12:40
- - greynol   We had the same inconvenient point raised about th...   Aug 28 2012, 20:32
- - Taishou   Thanks for all your input, it's really great ...   Aug 29 2012, 02:48
|- - Porcus   QUOTE (Taishou @ Aug 29 2012, 03:48) Shou...   Aug 29 2012, 15:05
|- - jensend   QUOTE (Taishou @ Aug 28 2012, 23:47) If i...   Aug 29 2012, 15:13
- - Taishou   If it matters of something, the files with clippin...   Aug 29 2012, 06:47
- - Porcus   But ... if the peak measures to 0.999, and the res...   Aug 29 2012, 20:43
- - pdq   The resampling produced samples that were beyond +...   Aug 29 2012, 21:02
- - Taishou   Well, I decided to leave it as it is. I tried the...   Aug 29 2012, 23:30
- - greynol   Re. compression: I've seen worse. At the end ...   Aug 29 2012, 23:41
- - Taishou   Indeed. And it's the same on the source, so it...   Aug 29 2012, 23:51
|- - Porcus   QUOTE (Taishou @ Aug 30 2012, 00:51) it w...   Aug 30 2012, 07:35
- - greynol   Could it be due to possible inter-sample overs occ...   Aug 30 2012, 02:51
- - greynol   Off-topic discussion on the SNR or MP3 has been sp...   Aug 31 2012, 19:48


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