Category Archives: My Apps

VIDEO: Accurate Tuner Pro Demo

Accurate Tuner Pro with Guitar:

 

Free DownloadInstall Accurate Tuner Pro from the Windows Phone Marketplace

 

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Accurate Tuner Pro Overview

Accurate Tuner Logo

Accurate Tuner Pro is a chromatic instrument tuner, which combines two classical pitch tuning methods: Needle and stroboscope.

The needle enables fast and comfortable rough tuning, while two optional stroboscopic animations facilitate fine tuning. Both methods are used at the same time, so it’s not necessary to choose one of them. Detected notes are shown on a musical staff. Adjustable sensitivity will help in not so quiet environments.

Accurate Tuner Pro Screenshot

Free Trial Version

  • Fully working needle and strobe tuner with no time limit, supported by ads
  • Strobe accuracy: +/- 0.5 cent
  • Needle accuracy: 5th octave: +/- 0.2 cent, 6th octave: +/- 1 cent, 0th octave: +/- 6 cents
  • Range: A0 – B6
    The tuner is able to measure tones in the 0th and 1st octaves for some harmonically very rich instruments only, as common phone microphones are not able to detect these low frequencies. Still the tuner tries to compute these tones from higher harmonics, sometimes successfully. Even a human ear works this way.
  • 126 instruments + “Any instrument” mode
  • Transposition: +/- 4 octaves, two transposition modes
  • Adjustable sensitivity
  • US (CDEFGAB), German (CDEFGAH), scientific (C2, C3, C4) and Helmholtz (C, c, c’) notations
Accurate Tuner Pro supports 126 instruments

126 instruments

Full Version

  • Tone Generator able to play notes from A0 to C8 (88-key piano range) or any frequency from 27.5 Hz to 4186.01 Hz. You need solid external speakers or headphones for the two lowest octaves.
Accurate Tuner Pro - Tone Generator

Tone Generator

You can set the frequency directly and also set the levels of harmonics and form the wave shape this way (not the wave envelope).

  • Screen Lock Blocking
Accurate Tuner Pro - settings

Small part of settings

  • Adjustable base frequency (note A4) in the range of 300 – 500 Hz
  • 32 temperaments
Accurate Tuner Pro - temperaments

Accurate Tuner Pro supports 32 temperaments.

  • Many alternate instrument tunings, including 70 guitar, 25 banjo and 19 mandolin tunings
Accurate Tuner Pro - alternate instrument tunings

Accurate Tuner Pro supports many alternate instrument tunings, including 70 guitar tunings.

  • Unlimited number of custom instruments and tunings
  • No ads (on rare occasions it may recommend another app in a non-intrusive way)
  • Bigger stroboscopic part

Future Plans

  • Metro design

Marketplace on the Web

Tamara Volskaia domra, Iskrina Matveeva piano: Tchaikovsky Danse russe:

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Accurate Tuner Pro Sneak Peek

Accurate Tuner Pro has been finally submitted to the Marketplace certification process! It should be available for download in a few days.

Can you tell 10 differences? 😉

Accurate Tuner Beta vs. Accurate Tuner Pro

As you can see, on the surface almost nothing has changed. So sorry folks, still no Metro design. (But don’t worry too much as I plan a major design overhaul for the next major update.) This update was about improving the internals. And they have been much improved!

Another source for concern may be the apparently missing ad banner. Is the Pro version paid? Yes, it is. But don’t panic, there is a free ad-supported trial with no time limit.

Free trial version has all the features of the Beta with just one exception – it doesn’t support adjustable base frequency and has A4 fixed at 440 Hz. On the other hand, it has some additional features and even this free trial benefits from the improved algorithm with better accuracy, stability of results, sensitivity and range! The paid version has many new features.

Robert de Visée: Suite en la mineur, Prélude et Allemande, Jonas Nordberg, theorbo:

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Accurate Tuner finally works on Mango

I’ve docummented the issues my Accurate Tuner Beta 1.0.0. has with Mango. Put simply, it does not work at all. After quite a lot of hours, I’ve finally managed to repair it!

Yes, it was more demanding than I expected, but all’s well that ends well. After some final testing I will publish the update, so it will be available in the marketplace in a few days. Also, I will publish my findings about the changed Microphone object behaviour in Mango on this blog.

Let’s comment on the video:

  • Notice the Middle C on the Yamaha keyboard is marked as C3, while the tuner shows C4. It is correct – it really is C4 in the scientific notation, used by the Accurate Tuner (261.64 Hz).
  • My left thumb is shaking… no, I’m not that old or terrified, just a little cold. 🙂
  • The fundamental frequency detection is not perfect. Different tone letters or octaves are flashing at times – this is typical for this hard-to-tune guitar with nylon strings I used for this video. Fortunatelly, it’s better with other instruments, including steel-string guitars. In fact, all these tones are harmonics of the base frequency, so do not really matter. All harmonics are in tune at the same time, so you can safely ignore letters and concentrate just on the needle and/or the wave.
  • When you get accustomed to it (and use steel strings 😉 ), you can tune your instrument extremely fast using the wave only.
  • Accurate Tuner design is not Metro and not even beautiful, I know. But it works! Don’t take it for granted, smartphone tuners in general rather do not work well. 😉

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VIDEO: Mango vs. NoDo – A Developer’s Trouble (update)

This is my Accurate Tuner Beta for Windows Phone.

Top: NoDo OS version (WP 7.0 – emulator from SDK 7.0, spring 2011 update)

Bottom: Mango (WP 7.1/7.5 RTM, Samsung Omnia 7)

Select 720p.

When in tune, the Wave above the Needle must stand still.

This beta has better than 0.1 Hz accuracy on NoDo, but doesn’t work at all on Mango. Microsoft has changed the Microphone XNA object behavior. The FFT part (Needle) of the Tuner is less accurate and unstable now, results are completely wrong for lower frequencies. The strobo part doesn’t work at all. And the sound wave has very different shape, it seems to be flipped on both axes…

The app had average rating of 4.88 in the Marketplace before Mango. It will go down fast now, of course. It will take at last a week before the update will be published. I should have test it on Mango before the Mango public release, I know. 😉 But I honestly hadn’t expected this kind of change… I’m trying to figure these changes in the XNA sound processing and to fix it ASAP, but it doesn’t seem to be trivial at first. Does anybody know what has exactly changed with Microphone, XNA events dispatching in Silverlight etc. in Mango?

http://accuratetuner.com

**********

Status update

I hope I’ve already localized the issue – and yes, there is a real change of the Microphone behavior, although it probably still is in accordance with the documentation.

Unfortunately, it’ll take some work to adapt my tuner to that change, but it should be possible. I plan to describe it in my blog later this week.

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Accurate Tuner Beta finally available in the Marketplace

My new app has found its way into the Windows Phone Marketplace. Accurate Tuner is a chromatic instrument tuner, which combines two classical pitch tuning methods: Needle and stroboscope.

The needle enables fast and comfortable rough tuning, while two optional stroboscopic animations facilitate fine tuning. Both methods are used at the same time, so you are not forced to choose just one of them.

Accurate Tuner for Windows Phone App Screenshot

Detected notes are shown on a musical staff with highlighted positions used by a selected musical instrument. Adjustable sensitivity may help in not so quiet environments.

Accurate Tuner Beta for Windows Phone - App Screenshot

With an integrated help system you won’t end up lost. Advanced settings take care of specific needs. It is simply worth a try. Download this free beta now!

Free DownloadInstall Accurate Tuner Beta from the Windows Phone Marketplace

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New app has been submitted to the Marketplace. Guess its purpose from its splash screen!

I sent my new WP7 app to the Marketplace today. This is its splash screen. Can you guess the purpose of the app from it? (Of course you can! :-))

WP7 app Splash Screen

New WP7 app Splash Screen

For comparison, this is the splash screen of my previous app – Agile Metronome:

Agile Metronome Splash Screen

Agile Metronome Splash Screen

Agile Metronome is still in a beta stage and during its six weeks in the Marketplace it received 35 reviews with average rating of 4.29. Thanks to all who rated it!

But I feel that my new app won’t be so appraised, because this kind of apps traditionally receives quite low average ratings. It has its reasons – these apps are usually hard to develop and hard to use. I know all the reasons, but it does not mean I know the remedies. I am trying to change the trend and make this app really usable. This new beta is not exactly there yet, but I hope it’s the step in the right direction.

It is going to be available in several days for your kind testing!

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