Low-frequency response test device of electret condenser microphone

In practical applications, this ECM requires a tool to determine the response of electrical and mechanical responses such that it can be known whether this ECM is stationery at the frequency of 0.5-10 Hz. By considering this problem, the test device is required to examine and obtain the frequency re...

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Bibliographic Details
Published inTelkomnika Vol. 18; no. 3; pp. 1368 - 1375
Main Authors Yudaningtyas, Erni, Khabib, Achsanul, Djuriatno, Waru, Amalia, Zakiyah, Subroto, Ramadhani Kurniawan
Format Journal Article
LanguageEnglish
Published Yogyakarta Ahmad Dahlan University 01.06.2020
Subjects
Capacitors
Emulators
Frequency ranges
Frequency response
Linearity
Magnetic fields
Network analysers
Resonant frequencies
Transistors
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Summary:In practical applications, this ECM requires a tool to determine the response of electrical and mechanical responses such that it can be known whether this ECM is stationery at the frequency of 0.5-10 Hz. By considering this problem, the test device is required to examine and obtain the frequency response of ECM or even can be used as a human pulse emulator. Since the pulse frequency is typically low frequency, between 0.5-2 Hz, special treatment is implemented to satisfy these frequency ranges. [...]the last, section 4 presents the Conclusion. 2.MATERIAL AND METHOD To implement the proposed test device, some components are realized to this test device such as the loudspeaker with low-frequency characters, the amplifier without distortion and has high linearity and measurement device i.e. oscilloscope and vector network analyzer. According to Figure 2, the mathematical model of the loudspeaker can be derived as follows: ... According to Figure 2, the loudspeaker has a resonant frequency.
ISSN:1693-6930
2302-9293
DOI:10.12928/telkomnika.v18i3.14831