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  #1  
Old 06-25-2012, 02:01 PM
Rob_iDrumTune Rob_iDrumTune is offline
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Default Drum Tuning iPhone App

Hi all, I've just recently created an iPhone App to help drum tuning. It analyses the sound of the drum and tells you the fundamental frequency. There is also a display to show you the frequency spectrum, so you can pick out the frequencies of overtones too if you like. Initially it's in the iPhone App Store for just $1, so if you're interested please try it out and let me know any feedback please.

You can find it by searching 'idrumtune' in the iPhone app store. It also works on iPod touch. Or direct link here: http://itunes.apple.com/us/app/idrum...6124?ls=1&mt=8

There's a YouTube video of the software in action here (beta version demo before spectum view mode was introduced): http://www.youtube.com/watch?v=tnOeLSqbmhg

And we're on Twitter here: http://twitter.com/#!/idrumtune

Hope you like, would love to hear some feedback :)

Cheers

Rob

http://www.idrumtune.com
https://www.facebook.com/iDrumTune
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  #2  
Old 06-26-2012, 02:15 AM
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Alain Rieder Alain Rieder is offline
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Default Re: Drum Tuning iPhone App

I can't test it right now as I don't have any drum at hand, but it looks interesting, so I bought it.
I was thinking it might be interesting to be able to keep a record of the tuning frequencies used on different sets and dates or occasions, into the app!?

Cheers
Alain
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  #3  
Old 06-26-2012, 12:09 PM
Rob_iDrumTune Rob_iDrumTune is offline
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Default Re: Drum Tuning iPhone App

Hey Alain - you read my mind! Yes we're hoping to incorporate a record keeping feature in future versions, which will of course be available as a free update to anyone who's already got the app. Please let us know any feedback you have when you get using the iDrumTune software.
Cheers.
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  #4  
Old 06-26-2012, 02:02 PM
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Netz Ausg Netz Ausg is offline
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Default Re: Drum Tuning iPhone App

How does this work? Your description states that it measures the strongest frequency of the drum. If there are overtones present then sometimes the overtone pitches can be stronger than the fundamental pitch of the drum, which is lost in the mix of tones. Do you have any way of filtering these tones?

I ask because I have a tunebot from overtone labs that does a phenominal job of filtering the unwanted frequencies and allowing you to find the true pitch the drum, and indeed the tuning at each lug, resonates at. Does this work basically as a chromatic tuner, like you can use currently on a guitar, or is there something more going on? I've tried using a chromatic tuner on a drum before but it just gets too confused.

Thanks in advance for your info.
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  #5  
Old 06-26-2012, 03:17 PM
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Default Re: Drum Tuning iPhone App

And to expand what Netz Ausg is asking: The first and most challenging part of tuning a drum is getting the pitch of the head equal at all lugs. When doing that tuning you generally listen for the sound of the overtones right at the lug; you generally tap the drum head 1/2" to 1" from the rim. The fundamental of the drum is strongest when playing the drum in the exact center of the head. For that matter, would it be possible for it to display some or all of the frequencies detected, the fundamental and first few overtones? Then you'd have an even better idea of what the drum head was doing.
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  #6  
Old 06-26-2012, 03:51 PM
Rob_iDrumTune Rob_iDrumTune is offline
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Default Re: Drum Tuning iPhone App

Hi all, thanks for your comments and questions - yes I've been working on the algorithm for years (you'll see a couple of academic papers over at http://www.idrumtune.com).

It is doing much more than a simple guitar tuner, you are right. The iDrumTune software looks at all the frequencies generated and uses a unique algorithm to select the fundamental to display. But actually the software also displays the full frequency spectrum in graphical form, so you can look closer and see what the overtones are at the same time. This way it's really simple to know which frequency you are looking at and measuring. Obviously the lowest frequency is the fundamental and the second is the first overtone which can, as you said yourself, be used to help tune around the perimeter of the drum.

Actually the benefit of using an iPhone is that you can move the microphone above the position of the lug you are tuning, so you get a very accurate reading of how the drum is vibrating at that exact lug. In my experience it is not possible to accurately tune each lug without moving the microphone to the point of excitation.

I hope that helps answer a few questions, feel free to keep them coming :) and thanks for your interest!

Rob
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  #7  
Old 06-26-2012, 04:11 PM
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Netz Ausg Netz Ausg is offline
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Default Re: Drum Tuning iPhone App

Out of curiosity, have you tried out a TuneBot? Since they're your direct competition I would expect you had.

Can you explain the key points of difference to me?

Also - any plans for Android/Windows Phone in the future?
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  #8  
Old 06-26-2012, 04:16 PM
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Default Re: Drum Tuning iPhone App

looks pretty cool, for 59p i think ill buy it, but my main concern is will i be able to tune each lug to the same pitch? and how accurate is it?
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  #9  
Old 06-26-2012, 04:47 PM
Rob_iDrumTune Rob_iDrumTune is offline
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Default Re: Drum Tuning iPhone App

Hi - yes the tunebot principle is exactly the same, but actually the complexities of drum tuning mean that a full graphical display is really important in my opinion. And given the fact that virtually everyone owns a powerful touch screen device these days, I don't fundamentally believe that bespoke hardware is the way forward long term - the prototyping costs make a business venture very risky. I'm currently working on menu driven features to allow users to save their prefered tunings and also to analyse decay times, which will be available in future versions, and as its just an iPhone app I can keep the cost many many times lower than hardware systems.

Yes, you can tune each lug to the same pitch, if you hold the phone and hit the drum in the centre you record the fundamental, if you hit the drum at the edge you get the overtone at the lug. If there's any confusion just look at the spectrum display and you'll usually see both frequencies recorded.

iDrumTune gives readings to an accuracy of 0.3 Hz, though it rounds this to the nearest 0.5 Hz. I'm afraid the fundamental mathematics associated with calculating frequencies of an impulsive signal mean that it is not scientifically possible to calculate to higher accuracy, and any system that claims otherwise is clearly trying to pull the wool over your eyes :) Actually in reality this accuracy is fine with respect to the sensitivity of our ears for short bursts of sound, so it is certainly sufficiently accurate.

And yes, Android version is in the pipeline - but we're a little way off a completion date! Thanks again for your comments!
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  #10  
Old 06-26-2012, 04:56 PM
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Default Re: Drum Tuning iPhone App

Where were you two weeks ago (when I bought a Tune Bot)? :)

I had similar thoughts about unnecessarity (word? no) of custom hardware. Having better graphic capabilities is another huge bonus. Good luck with your venture.
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  #11  
Old 06-26-2012, 05:17 PM
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Default Re: Drum Tuning iPhone App

gotta say the accuracy seems to be incredible, 8 hits of the drum, all between 145 and 148,
any chance you could upload a video with a drum being tuned from scratch with it ?
not the best tuner and would love to see if i can get my kit sounding better with your techniques.
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  #12  
Old 06-26-2012, 10:59 PM
Rob_iDrumTune Rob_iDrumTune is offline
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Default Re: Drum Tuning iPhone App

Fuo, Nick G - many thanks again for your comments and feedback! Nick, good idea - we'll be making a number of tutorial videos over the next two months, so I'll certainly add one regarding tuning from scratch.

If you follow us on facebook or twitter you'll be sure to hear about the videos when they're uploaded. I'll post links on here too in due course.

Cheers,

Rob
www.iDrumTune.com
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  #13  
Old 06-27-2012, 12:18 AM
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Default Re: Drum Tuning iPhone App

Hi Rob,

I thought for a mere EUR 0,79 I would give it a try.
I did a quick test next to my tune-bot. The readings seem pretty similar.
The tune-bot is a bit quicker than my iPhone 4 but the Spectrum View on the app is pretty cool.

Some remarks: it would be nice if there was an option to turn off the screensaver as my iPhone falls asleep if I wait too long. Also I would prefer to have the note displayed (could be left to the Hz value). Maybe also a filter mode?

And I like to have a drum stick in one hand to tap and a drumkey in my other hand to tune so that leaves no hand free for holding my iPhone. A clip like the tune-bot has is pretty handy. Perhaps there are some third party clips available for this.

I'll give it a better try this week when I have more time but it looks like it has potential.

Cheers, Eric
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  #14  
Old 06-27-2012, 12:24 AM
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Default Re: Drum Tuning iPhone App

Can't wait to see an Android version!
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  #15  
Old 06-27-2012, 02:10 AM
Rob_iDrumTune Rob_iDrumTune is offline
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Default Re: Drum Tuning iPhone App

Hi all - Eric, many thanks for your detailed feedback. It's still early days for iDrumTune and future versions will be packed with additional features, improvements and options, so it's really good to hear your thoughts. If you can spare time to post ratings on the App store that would be really appreciated!

Nick - we'll be producing and posting a number of tutorial videos over the next two months, so I'll certainly make sure we have one on tuning from scratch!

Cheers
Rob
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  #16  
Old 06-27-2012, 04:44 AM
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Default Re: Drum Tuning iPhone App

Just downloaded the app to my iPod touch. Started playing with it, around my kits. So far, my reaction is: It's fantastic!

However, the website seems a bit off. When I click on the large 'iDrumTune' logo, in the center, it takes me to a page for a band called 'Eureka Stockade'.
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  #17  
Old 06-28-2012, 02:45 PM
Rob_iDrumTune Rob_iDrumTune is offline
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Default Re: Drum Tuning iPhone App

Ha ha - oops, that rogue weblink was left over from a previous webpage I was working on. All fixed now (thanks for pointing it out Jack!).

Thanks again for your feedback on iDrumTune. A few of the magazines are running features and reviews in the next month and there's an official press release here if it's useful to anyone:

iDrumTune Press Release
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  #18  
Old 06-28-2012, 07:18 PM
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Default Re: Drum Tuning iPhone App

Hey Rob, this app is really something. I've now had some time to play with it and I'm blown away by how helpful a tool it has become in just two days.
My buddy shelled out money for a TuneBot and he's jealous that I got the iDrumTune app for a dollar, and mine's easier to use!
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  #19  
Old 06-29-2012, 02:27 PM
Rob_iDrumTune Rob_iDrumTune is offline
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Default Re: Drum Tuning iPhone App

Hey Jack thats fantastic to hear - I'm really glad its become so useful for you. If you could spare a minute to give us a rating in the app store that would be fantastic please? Thanks again!
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  #20  
Old 06-29-2012, 02:29 PM
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Default Re: Drum Tuning iPhone App

I bought your app a few hours ago, and I will use it during the week end.

I also mentioned it in an Italian drum forum (La Batteria: http://www.labatteria.it/forum/viewtopic.php?t=78206: hope you don't mind ...
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  #21  
Old 06-29-2012, 05:40 PM
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Default Re: Drum Tuning iPhone App

I tried it...and it's useful if you want to double check your ears if you are already familiar with tuning and your ear is trained. For .99 cents it's a great tool but I dont think it would make anyone a master at tuning on it's own. Putting in the time of learning to tune is the secret and this app is a useful tool when in doubt.
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  #22  
Old 07-01-2012, 02:06 PM
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Default Re: Drum Tuning iPhone App

Hey Rob

Picked up your app and have been playing about with it.

Just one question regarding the reso head. In your app you say that both batter and reso should be the same. But you hear of people tuning the reso a 3rd higher. Is this what you are talking about with F1 frequencies?
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  #23  
Old 07-01-2012, 05:43 PM
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Default Re: Drum Tuning iPhone App

Maybe it's my phone but I can't get it to register notes very easily.

I thought I could hold it near each tension rod and get the pitch in that particular area so that I could even them all out the way I would with my ear but I end up having to hit the drum harder and I'm pretty sure the only note being perceived is "F0".
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  #24  
Old 07-01-2012, 06:39 PM
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Default Re: Drum Tuning iPhone App

The fundamental is the batter head, the entire column of air in the drum, and the reso head moving down in unison when the drum is struck, and continuing to vibrate up and down, in unison, after. So the fundamental has to be the same for both heads, since the reso head can only react to the air movement in the drum.

Theoretically, at least. The presence of a vent hole throws the results off a little, since some of the air column inside the drum ends up breathing in and out.

The overtones are different and indepedent for each head, as they move as a ripple across each head, and don't incite the same movement of the opposite head.
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  #25  
Old 07-02-2012, 12:14 AM
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Default Re: Drum Tuning iPhone App

Cool!

As good as the TUNE BOT but only .99 cents!

If you have an iPhone that is.
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  #26  
Old 07-02-2012, 03:11 AM
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Default Re: Drum Tuning iPhone App

Quote:
Originally Posted by Les Ismore View Post
Cool!

As good as the TUNE BOT but only .99 cents!

If you have an iPhone that is.
Not just iPhone, iPod Touch works too!
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  #27  
Old 07-03-2012, 09:52 AM
Rob_iDrumTune Rob_iDrumTune is offline
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Default Re: Drum Tuning iPhone App

Hi guys - thanks again for your feedback and for an interesting discussion. Thanks Soupy, you are very right with your comments about F0. Actually one of the key drivers for developing the iDrumTune software is just to help drummers learn a bit more about the science of their drums and to be inquisative of how and where all the sound comes from. Ideally everyone would be able to tune with their ears alone, but hopefully iDrumTune helps accelerate the learning curve.

Dre25 and Planet_boom - to analyse the F1 frequnecy you need to hold the iPhone at the edge and also hit the drum at the same place at the edge. If the F0 frequency is still being picked up then look at the spectrum view and you should be able to identify the F1 frequency too. Yes when people say 'I tune the resonant head to a 3rd of the batter head' they must be refering to the F1 frequency, as F0 is the same for batter and resonant. Whereas F1 can be different for batter and resonant. In my research I've expeimented with tuning F1_batter to 1.5xF0 and F1_resonant to approximately 2xF0, giving a harmonious relationship, similar to that of tuned tympani.eg F0=100Hz, F1b=150Hz F1r=200Hz. Its not always possible to be exact, and it can be quite hard to achieve, but this relationship does give a very 'musical' sound to your toms.

It's amazing how complex a simple thing you hit can be from an acoustic point of view!

I'm working on extra iDrumTune features to assist better with clearing the drumhead, tuning the resonant head and also analysing decay times, as well as a recording feature for storing prefered tuning setup data, so there's still plenty of future enhancement to iDrumtune to come!

And yes, supported devices are as follows: iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (3rd generation), iPod touch (4th generation) and iPad. Requires iOS 5.0 or later.

And hopefully one day Android! But unfortunately we don't have a completion date yet :(

Happy tuning!
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  #28  
Old 07-16-2012, 03:52 AM
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Default Re: Drum Tuning iPhone App

I tried it today. It seemed to struggle to hear certain lugs no matter where I put it. I detuned a lug one full turn and all the app could pick up was the lower fundamental of the whole head not by each lug - no matter where I put it. Plus it takes a long time to register new hits. I would imagine the mic in the phone is the weak link.

The drum dial is much more effective.
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  #29  
Old 07-16-2012, 05:48 AM
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Default Re: Drum Tuning iPhone App

Quote:
Originally Posted by imispgh View Post
I tried it today. It seemed to struggle to hear certain lugs no matter where I put it. I detuned a lug one full turn and all the app could pick up was the lower fundamental of the whole head not by each lug - no matter where I put it. Plus it takes a long time to register new hits. I would imagine the mic in the phone is the weak link.

The drum dial is much more effective.
I believe I've read this in at least two other locations. Are you entirely sure the results didn't get better by the third time you typed this, lol.

Dennis
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  #30  
Old 07-19-2012, 05:12 PM
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Default Re: Drum Tuning iPhone App

you should work on a PC versión, so that you can plug in a real mic and have better and faster readings.
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  #31  
Old 07-19-2012, 10:52 PM
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Default Re: Drum Tuning iPhone App

Hi Rob,

I don't have an iPhone, but I do have an iPad. Will the app work with the iPad?

Thanks!
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  #32  
Old 07-20-2012, 01:06 AM
Rob_iDrumTune Rob_iDrumTune is offline
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Default Re: Drum Tuning iPhone App

Hi guys, yes it will work just fine on iPad :) and a desktop version is a good idea, in fact all my original prototypes (long before iphones could do the analysis) were desktop versions and using a full miked up kit via a mixer, you can see some of the prototype images and screenshots at http://www.robtoulson.rt60.co.uk/rt_...DrumTuning.pdf
they look so dated now!

But yes, we do hope to release a studio focused version in due course :)
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  #33  
Old 07-20-2012, 01:11 AM
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Default Re: Drum Tuning iPhone App

Hey all,

Our contributor Doc Spooner did a great review in the iDrum Tune ... it is the real deal.

http://www.theblackpage.net/review/idrum-tune
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  #34  
Old 07-20-2012, 07:30 PM
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Default Re: Drum Tuning iPhone App

Rob,

I purchased the app for my iPad this morning, but I'm getting strange readings. For one thing, my 8" tom and my 14" floor tom are measuring roughly the same (151 Hz and 148 Hz, respectively), though the difference in perceived pitch between these drums is (as you would expect) massive. Second, I'm finding that the Hz reading on my floor tom varies widely -- more than 30 Hz -- from one hit to the next. The fluctuations seem to be tied to how hard I hit the drum, as if its measuring volume rather than pitch.

Any ideas on what I might be doing wrong?
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  #35  
Old 07-21-2012, 01:55 PM
Rob_iDrumTune Rob_iDrumTune is offline
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Default Re: Drum Tuning iPhone App

Hi soren-k
It sounds to me like the app is picking up the F1 overtone on the floor tom. If you put it in Spectrum View mode you'll probably see another peak at about 100-120 Hz, which will be the floor tom's fundamental (F0). It means that there is a lot of ringing F1 on the drum (which you may or may not like the sound of), so you may even want to dampen the outside (or use a head with damping within) and that will make the fundamental stand out more.
When you hit the drum harder you will excite the F0 perhaps more likely, so I'm not suprised its jumping between 110Hz (F0) - 140Hz(F1).
Actually as you hit the drumhead harder it causes stretching of the head, so its not unusual for higher frequencies to be observed when hitting harder (like a guitarist bending his string to raise the tone a little).
Hope that helps, feel free to let me know how you get on or email me at rob@idrumtune.com.
Cheers
Rob
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  #36  
Old 07-21-2012, 04:16 PM
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Default Re: Drum Tuning iPhone App

Quote:
Originally Posted by Rob_iDrumTune View Post
Hi soren-k
It sounds to me like the app is picking up the F1 overtone on the floor tom. If you put it in Spectrum View mode you'll probably see another peak at about 100-120 Hz, which will be the floor tom's fundamental (F0). It means that there is a lot of ringing F1 on the drum (which you may or may not like the sound of), so you may even want to dampen the outside (or use a head with damping within) and that will make the fundamental stand out more.
When you hit the drum harder you will excite the F0 perhaps more likely, so I'm not suprised its jumping between 110Hz (F0) - 140Hz(F1).
Actually as you hit the drumhead harder it causes stretching of the head, so its not unusual for higher frequencies to be observed when hitting harder (like a guitarist bending his string to raise the tone a little).
Hope that helps, feel free to let me know how you get on or email me at rob@idrumtune.com.
Cheers
Rob
OK Rob, that's helpful. I'll take a look at the spectrum view and see if I can see it there. Thanks!
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  #37  
Old 03-10-2013, 03:21 PM
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Default Re: Drum Tuning iPhone App

I am really glad to have found this website. I purchased Tune-bot before iDrumTune came out. I am very happy with Tune-Bot. I have to say that I was a somewhat sceptical that iDrumTune would be comparable. After using it I have to admit that I am really impressed. The accuracy is spot on, and I get very similar readings from both products.

Although not too bad at tuning drums by ear, I love having an objective way to check my tunings. It also lets me experiment with different tunings, safe in the knowledge that I can go back to my standard tuning at any time.

In terms of value for money, iDrumTune is a great product, as is its ability to display the sound waveform and spectrum.

A few of improvements would make this product even greater for me:

- adding a note display on the left of the Hz display, e.g "A" preferably in the same size as the Hz display. I find the current note display quite small, and you have to hunt for the green arrow left and right to check what note has been picked-up. An alternative would be for the note display to be centered on the green arrow, as psychologically it would mimic the sharpness of flatness of a pitch.

- adding an Octave value to the note display e.g "A4" (for middle A). This would be a very useful addition for musicians used to thinking in terms of notes and octaves.

- on older hardware (e.g my iPhone GS3) it can take up to four seconds for the pitch to be calculated and the new waveform displayed. The first few times I used the app I thought it wasn't working as the display didn't change when I hit my drum. It would be really useful if the moment you hit the drum the display could either clear, or change colour to signify that a hit has been registered. For instance the green iDrumTune logo at the top of the screen could change colour to red, and then back to green once the pitch was calculated. Or maybe a small LED light type display going from green to red and back again to show the app is busy calculating the pitch,

- another possible improvement would be to display both F0 and F1 pitches as the app calculates them anyway. That way you'd have the fundamental on one line and the first harmonic underneath, with maybe the fundamental in a bold font and the first harmonic in a regular font.

- finally, some sort of user tuning library would be very useful too.

Thank you for a great app,

Rudi

Last edited by Rudi; 03-10-2013 at 11:42 PM. Reason: Typos, poor syntax, and a few clarifications
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  #38  
Old 04-07-2013, 01:22 AM
JSWhaler JSWhaler is offline
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Default Re: Drum Tuning iPhone App

Just downloaded the app and will play with it later. Good info here
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Old 06-05-2013, 06:39 PM
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soren-k soren-k is offline
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Default Re: Drum Tuning iPhone App

Rob,
I recently had a problem with an iPad iOS update and had to re-download all my iPad apps. For some reason, iDrumTune no longer appears among my apps list, and I can't find it in the app store even when I search for it. Any idea what's going on?
Thanks for your help!
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Old 06-25-2013, 05:23 PM
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The Modernist The Modernist is offline
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Default Re: Drum Tuning iPhone App

Any joy on the Android version?
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