Clock Tuner

Clock Tuner


A Timegrapher

Adjust your mechanical clock by your self.
Just run this app on your phone and put your phone near your cuckoo clock or grandfather clock.

This tuner samples and analyze clock sound to displays the frequency of pendulum in real time. You can easily measure clock frequency to adjust pendulum.

** Recommend to plug a microphone into Android device and attach the microphone to the back of your watch.
** Basic version display wave graph and pulse interval histogram.
** Frequency display requires 'Premium' upgrade.
** Do not upgrade if the 'Basic' version fail to display pulse interval histogram.

Not for digital clocks.
Not working in noisy environment.
Set microphone direction toward a clock.

- Review from Mr. Kojima
http://www.thewatchsite.com/index.php/topic,42142.0.html

- Preset example
Rolex or mechanical watch: Target frequency: 4 or 5Hz, Sample duration: 2Sec, Sensitivity: manual 50
Most pendulum clock: Target frequency: 1 or 2 Hz, Sample duration: 5 or 10 Sec, Sensitivity: medium

FAQ.
1) in the settings there is a sensitivity option with a high, medium, low and 3 manual settings, can you explain how this changes the results

It determines sound amplitude threshold for detecting clock sound. If your clock sound is loud you may reduce sensitivity. This will allow more environmental noises.
If you increase the sensitive, you may measure hand watches. But small noise may measurement errors.

2) why does the detected frequency change between light grey, black and red
Red means smaller drift during the measurement interval while grey means that measurement may have an error.

3) the average frequency does not always calculate, it stays at NaN
The 'detected frequency' should be red continuously.

4) how do you calculate the pulse drift %
abs(max detected frequency - min detected frequency) / detected frequency during 1 detection cycle.

5) what are the 2 graphs showing and what data are you using for the calculations
The size of bars in the upper graph should be almost the same.
The bottom shows amplitude of sound wave recorded from micro phone.

6) are newer versions of the app being developed

** You may provide sound sample by sending wav or mp3 file to [email protected]

Recent changes:
v 2.11
- Record & Share measured data.
- Add your custom target BPH.
Add to list
Free
58
2.9
User ratings
136
Installs
10,000+
Concerns
0
File size
2881 kb
Screenshots
Video of Clock Tuner Screenshot of Clock Tuner Screenshot of Clock Tuner Screenshot of Clock Tuner
About Clock Tuner
A Timegrapher

Adjust your mechanical clock by your self.
Just run this app on your phone and put your phone near your cuckoo clock or grandfather clock.

This tuner samples and analyze clock sound to displays the frequency of pendulum in real time. You can easily measure clock frequency to adjust pendulum.

** Recommend to plug a microphone into Android device and attach the microphone to the back of your watch.
** Basic version display wave graph and pulse interval histogram.
** Frequency display requires 'Premium' upgrade.
** Do not upgrade if the 'Basic' version fail to display pulse interval histogram.

Not for digital clocks.
Not working in noisy environment.
Set microphone direction toward a clock.

- Review from Mr. Kojima
http://www.thewatchsite.com/index.php/topic,42142.0.html

- Preset example
Rolex or mechanical watch: Target frequency: 4 or 5Hz, Sample duration: 2Sec, Sensitivity: manual 50
Most pendulum clock: Target frequency: 1 or 2 Hz, Sample duration: 5 or 10 Sec, Sensitivity: medium

FAQ.
1) in the settings there is a sensitivity option with a high, medium, low and 3 manual settings, can you explain how this changes the results

It determines sound amplitude threshold for detecting clock sound. If your clock sound is loud you may reduce sensitivity. This will allow more environmental noises.
If you increase the sensitive, you may measure hand watches. But small noise may measurement errors.

2) why does the detected frequency change between light grey, black and red
Red means smaller drift during the measurement interval while grey means that measurement may have an error.

3) the average frequency does not always calculate, it stays at NaN
The 'detected frequency' should be red continuously.

4) how do you calculate the pulse drift %
abs(max detected frequency - min detected frequency) / detected frequency during 1 detection cycle.

5) what are the 2 graphs showing and what data are you using for the calculations
The size of bars in the upper graph should be almost the same.
The bottom shows amplitude of sound wave recorded from micro phone.

6) are newer versions of the app being developed

** You may provide sound sample by sending wav or mp3 file to [email protected]

Recent changes:
v 2.11
- Record & Share measured data.
- Add your custom target BPH.

Android Market Comments
A Google User
Jun 26, 2015
I'm giving it 5 stars, even though it has a couple easily fixable shortcomings - mostly nit-picking on my part. 1) Reported Beat Error is really Rate Error - "Beat" has an entirely different meaning in horology. Rate = how fast, Beat = how even. "In Beat" = perfectly even "tick..tock..tick..tock.." - a trotting horse. "Out of Beat" = "tick.tock...tick.tock..." - a galloping horse. The app could easily detect & report In/Out of Beat in addition to Rate. 2) Needs customizable target rate. I have a 175BPM clock. The closest target is 180, the app reports ~1/2hr slow per day, even though it keeps perfect time. I repair clocks as a hobby, and can't justify the cost of professional hardware/software to adjust my clocks. This app works FAR better on my MotoX/5.1 than anything else I've found. The free version shows enough info to determine whether it actually works on your phone. But to unlock/USE it, you pay a reasonable price. It detected a watch that I can just barely hear by setting it directly over the microphone. Setting my phone (mic/screen up) on a clock case worked perfectly without directing the mic at the clock or opening the case. THEN I paid for it.
A Google User
Jun 5, 2015
Seems to be ok, really needs a rate reading in secs/day as that's what most watch guys really want to know. That's the only reason I've given it 3 stars, be a use it doesn't have one, used correctly it seems to be pretty good at reading beat frequency
A Google User
Jun 2, 2015
GREAT APP I run a clock n watch repair shop n use it constantly
A Google User
May 15, 2015
Worst defect for a paid app Developer doesn't reply to paying customer emails!
A Google User
Feb 14, 2015
Don't bother Doesn't work usually and when it does, it's usually wrong. Don't waste your time.
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