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In Reply to: RE: Ripping my vinyl ... posted by andyr on December 21, 2022 at 17:38:15
The key to me is clean LP playback using a TT setup of sufficient resolution to create a source that is worthy of high resolution conversion.
VPI HW19 MK3 / Sumiko MMT / Sumiko Alchemist Talisman S VDH MK3 / PS Audio NuWave ADAC / old laptop running vinyl studio
Needle drops are recorded as 1 file per side at 24/192, then edited into tracks. I check for the loudest sections of the LP, and set gain so that loud peaks hit -0.5db level. VS has a built in function to search for and import song titles and timing. This feature is useful, and generally I need minimal adjustments to trim then export each track.
I start with clean LPs so pops ticks etc are minimal to inaudible. I do adjust egregious flaws by expanding the waveform to almost mili-second resolution and then lower gain of the instantaneous peak.
I used Audacity before VS. There are conflicting reports on the net about the native ability of Audacity to actually capture a 24 bit file. A number of people believe that Audacity down samples all hi-res to 16 bit. Sampling rate is unaffected oddly enough. I side step any questions by using VS.
I have created rips that sound better than commercial CD copies-verified by my non golden eared wife and friends.
Follow Ups:
I'm not sure the controversy about the Audacity recording level is valid. I've been using Audacity for editing Redbook CD files ripped to 16-44.1 WAV and for 24-96 and 24-192 WAV LP recordings and Audacity converts everything to 32-bit float for processing. I haven't used Audacity to record directly but it makes sense that it records at 32-bit floating point resolution since that's how it's processing the file anyway.There's a discussion of that topic at the Audacity forum (linked below) and this is what I read:
"Audacity always records at 32-bit float, and then down-converts the recording to 16-bit if your Default Sample Format is 16-bit." In other words, it records at 32-bit float and then uses whatever bit-depth and sample rate you want.Not linked, but here's another discussion regarding trying to change the recording level to 16-bit:
https://forum.audacityteam.org/viewtopic.php?t=78179The image below shows an example of a CD file I ripped and opened in Audacity. You can see it's a 44.1Hz sample rate but it's now at 32-bit float resolution. My default sampling rate (Project Rate) is 96000 Hz and I specified WAV export format using 24-bit PCM Encoding.
I can also take a 24-96 or 24-192 WAV LP recording and export it to 16-44.1 WAV if I wanted. But it's being processed at 32-bit floating point resolution regardless of the original bit-depth of the recording.
Edits: 01/01/23 01/01/23
Hi tk - I'd like to ask you a Qu re 'bits' - are you able to send to send a PM to me ... so I can respond.
Thanks,
Andy
Here's where you can set your default sample format bit rate. I have mine set for 96000 Hz sampling and 24 bit depth. But as shown in my previous post, Audacity takes my 24 bit file and converts it to 32-bit floating for processing even though I specified 24-bit as my default.
I too record each side - but I do it at 24bit 96kHz - as that is what my nanoDIGI (which provides my spkr XOs) runs at.Hadn't thought about breaking sides up into tracks - I'll investigate this.
Re. Vinyl Studio vs. Audacity ... you said " A number of people believe that Audacity down samples all hi-res to 16 bit ". I'm not sure if 16 bits precludes 96kHz but I can tell you that when I accidentally recorded a side at 48kHz, using Audacity ... the file size was about half of the file size when I re-recorded it at 96kHz.
Andy
Edits: 01/01/23
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