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Show HN: MeloCraft – Pitch detection in real-time

melocraft.net

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Re: Show HN: MeloCraft – Pitch detection in real-time

#11

Post by pconner »

brudgers wrote: post #10
an_ko wrote: post #6

Asking me to subscribe to get a download link, with the only way to avoid it being a link that doesn't look like a link seems evil to me. Please reconsider.

There is a link to display the download links in small text under the subscribe. Calling a signup 'evil' is a bit over the top. People who don't spend their days on the web are less familiar with the less obvious ways of gleaning user data...e.g. current Google or Facebook logins, third party trackers, etc.

> Calling a signup 'evil' is a bit over the top.

On HackerNews, the word "evil" might as well mean "kind of annoying." Use Mailinator or a similar throwaway email service if you don't want to sign up.

Re: Show HN: MeloCraft – Pitch detection in real-time

#12

Post by elihu »

robhack wrote: post #2

Hello, I made this tool when I started learning the violin and wanted to correct my pitch despite not having a musical ear. I figured it might be useful to other people (:

For violin, I would recommend placing your horizontal guide lines to correspond to a just scale rather than 12-tone equal temperament.

Another type of tuning visualization that only works with just-tuned instruments is to have something like an oscilloscope, with the vertical axis connected to a microphone or pickup and the horizontal sweep set to be the same frequency as the root of your key. An interesting thing that happens is that, for any note that makes a whole-number ratio with respect to the horizontal sweep rate, you get a standing wave. If it's drifting to one side, it's sharp, and if it's drifting the other way it's flat.

I experiment with just-tuned guitars, and this is what I do with an old analog oscilloscope to check if my intonation is right.

Re: Show HN: MeloCraft – Pitch detection in real-time

#14

Post by pdkl95 »

rasz_pl wrote: post #13

so its like http://sdr.osmocom.org/trac/wiki/fosphor but limited to audio?

While it hasn't been updated in a while (get ready for OSS and JACK support only (use jack)) and the website has a few missing images, it's hard to beat baudline for frequency analysis.

http://www.baudline.com/what_is_baudline.html

Re: Show HN: MeloCraft – Pitch detection in real-time

#15

Post by robhack »

elihu wrote: post #12
robhack wrote: post #2

Hello, I made this tool when I started learning the violin and wanted to correct my pitch despite not having a musical ear. I figured it might be useful to other people (:

For violin, I would recommend placing your horizontal guide lines to correspond to a just scale rather than 12-tone equal temperament. Another type of tuning visualization that only works with just-tuned instruments is to have something like an oscilloscope, with the vertical axis connected to a microphone or pickup and the horizontal sweep set to be the same frequency as the root of your key. An interesting thing th…

That's very smart, thanks for the suggestion, it also shouldn't be too hard to add (:

Just-intonation and other tunings will be my top priority, there was a lot of demand for it in the violonist reddit.

Re: Show HN: MeloCraft – Pitch detection in real-time

#16

Post by robhack »

adam-a wrote: post #7
robhack wrote: post #2

Hello, I made this tool when I started learning the violin and wanted to correct my pitch despite not having a musical ear. I figured it might be useful to other people (:

Hi, nice tool. I just gave it a go and it seems reasonably accurate. I've recently been developing something similar - I'm detecting singing pitch for use in a game. I wonder did you use any particular method for detecting the pitch?

It's FFT-based. Then I do some basic computation to try and guess the « best » peak, taking the harmonics into account. Still need lots of work and I suck at math.

Re: Show HN: MeloCraft – Pitch detection in real-time

#17

Post by robhack »

rasz_pl wrote: post #13

so its like http://sdr.osmocom.org/trac/wiki/fosphor but limited to audio?

I only took a quick look for now, but this doesn't seem to give you musical note names? MeloCraft is mainly aimed at musicians, not really for general-purpose spectrogram analysis.

Also, no Windows binaries available? I understand it's open-source, but that's not very user-friendly imo.

Re: Show HN: MeloCraft – Pitch detection in real-time

#18

Post by robhack »

pdkl95 wrote: post #14
rasz_pl wrote: post #13

so its like http://sdr.osmocom.org/trac/wiki/fosphor but limited to audio?

While it hasn't been updated in a while (get ready for OSS and JACK support only (use jack)) and the website has a few missing images, it's hard to beat baudline for frequency analysis. http://www.baudline.com/what_is_baudline.html

I’m on Windows so I can’t test this one, but seeing from the screenshots, it does not seem to be aimed at musical notes and musicians.

I don't aim to be the best at frequency analysis. My goal is to help beginner musicians to get more confidence about their pitch accuracy.

Re: Show HN: MeloCraft – Pitch detection in real-time

#19

Post by robhack »

an_ko wrote: post #6

Asking me to subscribe to get a download link, with the only way to avoid it being a link that doesn't look like a link seems evil to me. Please reconsider.

I'm sorry you feel this way, as brudgers wrote, there is still a small link at the bottom to download without subscribing.

Getting some subscribers is very important to me because I make this tool in my free time, and the only way I can justify spending more time on it is if I have some users who care about the tool. If I shall burn in hell for this, then so be it.

Re: Show HN: MeloCraft – Pitch detection in real-time

#20

Post by robhack »

nacs wrote: post #5

Crashes instantly on start (on Windows): Fault Module Name: Qt5Gui.dll Exception Code: c0000005 Exception Offset: 00044856

That's odd, can I ask what version of Windows you're running? How much RAM you got?

I only tested it on Win7 and had a friend test it on Win8 and Win10.

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