thank you Ivan looking forward to an android version!
Show HN: I made a free app to calibrate your turntable by simply playing a song
141–150 of 239 posts
Re: Show HN: I made a free app to calibrate your turntable by simply playing a song
#142Just put a record on yesterday and my wife said it was playing too fast. I thought she was wrong, then I see this post today! I grabbed the app and gave it a go, 3.5% too fast according to your app. Now I have to figure out how to adjust the damn thing. Really appreciate a free nonsense free app. update: youtube to the rescue. pretty common affordable turntable( Audio-Technica LP60), so I figure I would put the vid l…
Wow, I'm feeling lucky. I have the exact same turntable. Using a different app (since I use Android) I was able to gyroscopicly measure just 1.3% average difference.
I have a sense of tone and it's always seemed fine to me.
Re: Show HN: I made a free app to calibrate your turntable by simply playing a song
#143Just put a record on yesterday and my wife said it was playing too fast. I thought she was wrong, then I see this post today! I grabbed the app and gave it a go, 3.5% too fast according to your app. Now I have to figure out how to adjust the damn thing. Really appreciate a free nonsense free app. update: youtube to the rescue. pretty common affordable turntable( Audio-Technica LP60), so I figure I would put the vid l…
I'd be curious to know _why_ your wife felt it was playing too fast. Was it out of tune, out of tempo or something else?
Re: Show HN: I made a free app to calibrate your turntable by simply playing a song
#144What a perfectly simple app! Going to try this out with my Technics SL1200 mk2 tonight. Thanks for sharing. P.S. Reading comments from a bunch of tech folks trying to wrap their heads around an app for calibrating analogue music playback device is very amusing. :-)
I assume this is for belt driven turntables, not direct drive. I also have a pair of 1200's. Most mixers these days have BPM built in, and before that you had red micro bpm counters and headphone amps to validate BPM. Never once on my 1200's did it read something outside of the producers BPM count when pitch was locked.
My MK2 was off by about 3% when the pitch adjust was in the detent. To be fair, it had a rough life before it ended up in my hands. If you have a frequency counter they're pretty easy to calibrate the correct way though.
Re: Show HN: I made a free app to calibrate your turntable by simply playing a song
#145Earlier quoted context omitted.
Correct. That was often done when mastering with tape. Record at one speed, playback at another to make it sound more "lively." There are songs that were sped up that way anywhere from 25 to 40 cents. It's another reason why live music so often doesn't sound like the recording. When using digital mastering, you can also adjust the playback speed, but you can correct the shift. You get more "liveliness" without the sh…
Do you happen to know of any tools for fixing pitch issues in music files?
Audacity.
Free and open-source.
Re: Show HN: I made a free app to calibrate your turntable by simply playing a song
#146Earlier quoted context omitted.
Wow is wavering speed. A constant turntable speed error (that this helps you calibrate out) doesn't produce wow.
All turntables have wow. Wow is determined by the rotational speed. So if you measure 33.2326 wow oscillations per minute, you can know the turn table is a touch too fast. Wow would not be used to measure the error, it would be used to measure the absolute speed. Getting the error from that point is trivial.
I understand what you're saying better, but I don't think you're going to be able to autocorrelate the frequency variation precisely at all from a few revolutions, especially since there are other non-periodic sources of frequency variability.
Re: Show HN: I made a free app to calibrate your turntable by simply playing a song
#147Just put a record on yesterday and my wife said it was playing too fast. I thought she was wrong, then I see this post today! I grabbed the app and gave it a go, 3.5% too fast according to your app. Now I have to figure out how to adjust the damn thing. Really appreciate a free nonsense free app. update: youtube to the rescue. pretty common affordable turntable( Audio-Technica LP60), so I figure I would put the vid l…
I'd be curious to know _why_ your wife felt it was playing too fast. Was it out of tune, out of tempo or something else?
If it’s a song you know well it’s certainly possible. It just sounds wrong. I once pegged a friends turntable as well sharp (and it was) in just a few seconds.
Re: Show HN: I made a free app to calibrate your turntable by simply playing a song
#148This is cool although it very confidently asserted that a 45 rpm 12” single was a perfect! 33 1/3 rpm.
Which suggests this is using song recognition and not discovering some underlying truth of the spinning platter.
Re: Show HN: I made a free app to calibrate your turntable by simply playing a song
#149Earlier quoted context omitted.
I would expect: 1. Detect wow: https://www.youtube.com/watch?v=kCwRdrFtJuE 2. Time wow. 3. Round to nearest record speed and report delta. I'd also expect that armed with a normal FFT algorithm that Ye Olde Bash On Algorithme Until Functionale would be fairly likely to work with reasonable effort, without having to get too "signal processor-y" on the FFT output.
Wow is wavering speed. A constant turntable speed error (that this helps you calibrate out) doesn't produce wow.
It does if the hole in the record is not exactly in the center.
Re: Show HN: I made a free app to calibrate your turntable by simply playing a song
#150Just put a record on yesterday and my wife said it was playing too fast. I thought she was wrong, then I see this post today! I grabbed the app and gave it a go, 3.5% too fast according to your app. Now I have to figure out how to adjust the damn thing. Really appreciate a free nonsense free app. update: youtube to the rescue. pretty common affordable turntable( Audio-Technica LP60), so I figure I would put the vid l…
I'd be curious to know _why_ your wife felt it was playing too fast. Was it out of tune, out of tempo or something else?
When US (NTSC) shows are aired in Europe (PAL), the framerate difference necessitates a small speed-up. It's barely noticeable, except when music is playing, at which point it is very, very noticeable. Yes, it's a little higher pitched, but it just feels wrong and is immediately noticeable. I think it's about 3% speed up, which is exactly what's being described here.