RPM tachometer based on sound
Sound based RPM estimation
RPMmtr uses state of the art pattern recognition & signal technology to estimate rotational speed
Tachometer View
Shows the rotational speed at a glance and indicates measurement accuracy with the color of the dent
Tracking View
Shows how the rotational speed changes over time and indicates measurement accuracy
Spectrogram View
Shows the frequency distribution of sound and how the RPM values are estimated