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  How to use iHeart: short video guide PDF Print
Written by Anatoly Butko   
Dec 25, 2008 at 05:24 AM

New video manuals for every using method of measurement in new iHeart version:

 Checking internal microphone sensitivity: iheartsensitivity
 Using external microphone method: iheartmicrophone
 Using direct accelerometer method:  iheartacceleratorauto
 Using manual accelerometer method:  iheartacceleratormanual

 

 


  Version 1.0.2 is submited PDF Print
Written by Anatoly Butko   
Dec 24, 2008 at 08:27 PM

There are some internal design changes, improved noise fillter and new option to play vibration at the end of heart pulse measuring.

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Read more...

  iHeart is available in App Store PDF Print
Written by Anatoly Butko   
Dec 21, 2008 at 07:39 AM

But version 1.0.1 is not final - I'm improving noise cleaning algorithm to increase accuracy of the pulse calculation. 


  iHeart settings description PDF Print
Written by Anatoly Butko   
Dec 18, 2008 at 04:45 AM
'Measurement time' - the time period (in seconds) for data collecting. Longer time period  is more precisely heart pulse value.

'Measurement frequency' - number of requests to built-in accelerometer per second.

'Used axis' - you can define axis was used for heart pulse calculation.

'Low threshold' and 'High threshold' - you can define thresholds to cut off noise out of usual heart pulse range, optimal choice will increase accuracy of measurement.

Settings


  iHeart Description PDF Print
Written by Anatoly Butko   
Dec 17, 2008 at 09:05 AM

You can easily measure your heartbeats rate and store it in your iPhone with your own marks and notes.


The measuring process is easy, take iPhone in your hand, (keep your hand in front of you on weight), then tap "Start" and wait until iPhone collects the necessary information - the value of the heartbeat rate will be displayed on the screen. 'Tap' on the label with the BPM value will transfer interface in the editing form, so you can set its attributes and note to the measured value and store it in the iPhone.

The sensitivity of the built-in accelerometer is very good, but unfortunately strength of heart beats in different individuals differs greatly, so sometimes you could not measure 'directly' the heartbeat rate.

iPhone measures the heartbeat value very well after scamper, aerobics, physical exercise - in general, after any physical activity, that makes the heartbeats strongly.

Usually heartbeats rate can be measured in a calm state, but there are some cases when it cannot be:
iPhone measures the heartbeats value poorly in case of : if iPhone is in heavy cover, if you dressed in heavy clothes, if you have a high weight, if you have weak heart and low blood pressure - there are quite a lot causes, but it does not mean you will not be able to use the application in these cases.

You can use 'indirect' measurement of the heartbeats rate - take iPhone in one hand, find the heart pulses by other hand on the first hand or on the neck (what is more convenient) and easily shake your iPhone in the rhythm of your heartbeats (or of heartbeats of any other person).

Before saving the record with measured BPM value, you can set the importance (highlighted in color in the list), the category (you can manage list of categories), the date and time of measurement (by default it is the current date and time - but it can be changed as well) and note. Saved records can be edited or deleted at any time.  Records can be added without measuring  as well - You can manually define all record's values.

In the settings page you can change time of measuring between 15 and 90 seconds (larger interval gives more accuracy), select specific axles of built-in accelerometer for measuring - (Y-axis is usually very good, but it depends on the your iPhone or iPod) and the upper and lower thresholds of the filter to cut off noise beyond this range.


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