Designing and Creating a Smart
Audiometer Using an Arduino Platform
Corneliu Drug˘ a, Ionel ¸
Serban , Antonio Serb˘ anescu, and Diana Cotoros
Abstract This paper presents an audiometer prototype that aims to improve the
development of hearing systems, especially in the field of telemedicine, by making
a better link between medicine device and the physician, the transmission of data
between the audiometer and another medical device being much easier to achieve.
The system uses an Arduino Mega 2560 development board to provide a host of
features such as data transmission without the use of connection cables or communication with devices such as desktop computers, laptops, tablets, or smartphones via
wireless. The system also includes an LM386 audio amplifier to amplify the signal
to deliver the sounds to the required parameters, a headphone jack to connect headphones, a 2004 (or Arduino 2560 compatible TFT display) to display parameters
and data, an I2C adapter and a micro SD and micro SDHC (high speed card) adapter
module where pure sounds at specific frequencies are stored. The audiometer is
designed to be portable audiometer, compact, lightweight and works with an external
9 V battery. During the test, the results are displayed on the LCD screen, so the audiogram can be built with the test, or the results can be transferred to your computer
or smartphone to make a printable audiogram. The audiometer offers the possibility
of saving the results and integrating them into a database of patients, diversifying
audiometric testing (automatic, vocal testing).
1 Introduction
People can hear sound waves only when the frequency is between approximately 20
and 20 kHz. Sounds over 20 kHz are called ultrasounds and are not perceptible to
humans. Sound waves below 20 Hz are known as infrasound and are not perceptible
[1].
C. Drug˘ a · I. ¸
Serban (B) · A. Serb˘ anescu · D. Cotoros
Transylvania University, Bra¸ sov, Romania
e-mail: Ionel.serban@unitbv.ro
© Springer Nature Switzerland AG 2021
N. Herisanu and V. Marinca (eds.), Acoustics and Vibration of Mechanical
Structures—AVMS 2019, Springer Proceedings in Physics 251,
https://doi.org/10.1007/978-3-030-54136-1_27
277
Audiometer Using an Arduino Platform
Corneliu Drug˘ a, Ionel ¸
Serban , Antonio Serb˘ anescu, and Diana Cotoros
Abstract This paper presents an audiometer prototype that aims to improve the
development of hearing systems, especially in the field of telemedicine, by making
a better link between medicine device and the physician, the transmission of data
between the audiometer and another medical device being much easier to achieve.
The system uses an Arduino Mega 2560 development board to provide a host of
features such as data transmission without the use of connection cables or communication with devices such as desktop computers, laptops, tablets, or smartphones via
wireless. The system also includes an LM386 audio amplifier to amplify the signal
to deliver the sounds to the required parameters, a headphone jack to connect headphones, a 2004 (or Arduino 2560 compatible TFT display) to display parameters
and data, an I2C adapter and a micro SD and micro SDHC (high speed card) adapter
module where pure sounds at specific frequencies are stored. The audiometer is
designed to be portable audiometer, compact, lightweight and works with an external
9 V battery. During the test, the results are displayed on the LCD screen, so the audiogram can be built with the test, or the results can be transferred to your computer
or smartphone to make a printable audiogram. The audiometer offers the possibility
of saving the results and integrating them into a database of patients, diversifying
audiometric testing (automatic, vocal testing).
1 Introduction
People can hear sound waves only when the frequency is between approximately 20
and 20 kHz. Sounds over 20 kHz are called ultrasounds and are not perceptible to
humans. Sound waves below 20 Hz are known as infrasound and are not perceptible
[1].
C. Drug˘ a · I. ¸
Serban (B) · A. Serb˘ anescu · D. Cotoros
Transylvania University, Bra¸ sov, Romania
e-mail: Ionel.serban@unitbv.ro
© Springer Nature Switzerland AG 2021
N. Herisanu and V. Marinca (eds.), Acoustics and Vibration of Mechanical
Structures—AVMS 2019, Springer Proceedings in Physics 251,
https://doi.org/10.1007/978-3-030-54136-1_27
277