Pulses App helps you to observe the pulses or vibrations on a surface in contact with a Smartphone. It does not require the use of the smartphone's camera or microphone.
The signal can be amplified and observed even for weak pulses. The amplified pulses (upper graph) is shown simultaneously with the original accelerometer signal (acc vs t) or its integration in different formats in the lower graph (x = ∬dt, v = ∫dt).

- The quality of the signal depends on several factors, including: the device's processor, the sensitivity of the accelerometer, the reference value, and the contact with the test surface.

- To carry out measurements, it is recommended to carry out a calibration occasionally (calibration button) to obtain a reference value.

- The original accelerometer data can be displayed in different formats by swiping left or right (the data is recalculated and plotted each time, so it may take a few seconds).

- Since, sometimes, obtaining a stable line of integration is difficult, in addition to displacement (x = ∬dt) and speed (v = ∫dt), other formats are also shown to observed small displacements. These other formats are based on the speed change (Δv=∫dt) between phase changes (absolute, positive or negative).

- Pulses App allows you to save the data collected by the accelerometer in image or text format. By hiding the pulses and integration monitors you will get much more data to save and to analyze (10 times or more).

- Pulses App should not be used as a specialized equipment or a professional diagnostic tool.