Low-frequency response test device of electret condenser microphone

Erni Yudaningtyas (Barawijaya University)
Achsanul Khabib (State Polytechnic of Malang)
Waru Djuriatno (University of Brawijaya)
Zakiyah Amalia (State Polytechnic of Malang)
Ramadhani Kurniawan Subroto (University of Brawijaya)

TELKOMNIKA (Telecommunication Computing Electronics and Control)
Vol 18, No 3: June 2020

Arterial pulse measurement using electret condenser microphone requires the standard to validate the value of the measurement. This standard requires the test device to reproducing the mechanical vibration to emulate the arterial pulse vibration. The main objective of this paper is to discuss the test device of electret condenser microphone using class A amplifiers and low-frequency loudspeaker. To validate this pulse measurement, this class a amplifier is examined under an experimental setup. The experiments showed that the device can be used as an alternative solution to generate the mechanical signal source to simulate the human arterial pulse.