Indonesian Journal of Electronics, Electromedical, and Medical Informatics (IJEEEMI) Vol. 2, No. 3, Nopember 2020, pp. 113-121 DOI: 10. 35882/ijeeemi.v2i3.2 ISSN: 2656-8624 Indonesian Journal of Electronics, Electromedical Engineering and Medical Informatics (IJEEEMI) 113 Improving the Effectiveness of Automatic Pure Tone Audiometer with Audiogram and Patient Diagnosis Aulia Rahmawati, I Dewa Gede Hari Wisana, Endang Dian Setioningsih, Sari Luthfiyah, Bedjo Utomo Department of Medical Electronics Engineering Technology Politeknik Kesehatan Kementerian Kesehatan Surabaya Jl. Pucang Jajar Timur No. 10, Surabaya (60282), Indonesia E-mail: liarahmawatiaul@yahoo.co.id, Hariwisana@yahoo.com, diancholik@gmail.com, sariluthfiyah@yahoo.co.id Article Info Abstract History Articles: Received May 15, 2020 Revised Nov 14, 2020 Accepted Nov 25, 2020 Conventional Audiometer testing using manual mode takes quite a long time for one patient, and the audiologist must accompany until the test is complete. The purpose of this research is to design a pure tone audiometer with an automatic mode using Arduino microcontrollers. Contributions from this research is a system of automatic running to improve health services. The Hughson Westlake method is used for automatic mode. The method is prepared in the Arduino software and uses the CD4066 digital switch to regulate the frequency and intensity given to the patient. As for the frequency generator using XR2206, the raised frequencies are 250, 500, 1000, 2000, 4000, 8000 Hz. Then the patient will press the interrupt button if listening to sound, and the result will be displayed to the Audiogram on Android. Patient diagnostic results can be seen when testing the entire frequency has been completed. At frequency 250 Hz obtained error value 0.13, at frequency 500 Hz obtained error value 4.37, at frequency 1000 Hz obtained error value 39.5, at the frequency of 2000 Hz obtained error value 24.67, at the frequency of 4000 Hz obtained error value 67.33. And at the frequency of 8000 Hz obtained error value 32.33. The results of this study showed that the highest error was 3.95% at 1000Hz frequency and the smallest error was 0.05% at 250Hz frequency. The results of this study can be implemented in conventional audiometer system to accelerate testing time to improve service and facilitate audiologist during hearing testing. Keywords: Automatic Audiometer Pure Tone Audiograms Frequency XR2206 The corresponding author: I Dewa Gede Hari Wisana Department of Medical Electronics Engineering Technology Politeknik Kesehatan Kementerian Kesehatan Surabaya Jl. Pucang Jajar Timur No. 10, Surabaya (60282), Indonesia E-mail: Hariwisana@yahoo.com This jobopen access articles and licensed under Creative Commons Attribution-Non-Commercial 4.0 License International, I. INTRODUCTION Humans are wrapped around five senses that are instrumental in living life, one of which is the sense of hearing. The senses of human hearing play an important role in undergoing social interactions with the environment. The human hearing threshold can hear the sound at a frequency of 20 Hz – 20,000 Hz [1]. However, human voice is about 8000 Hz or less. In general, the human word is expressed frequency 200 to 8000 Hz [2]. According to the World Health Organization (WHO) The article 2019 states that more than 5% of the world's population or 466 million people experience hearing impairment (432 million adults and 34 million children). It is estimated that in 2050 more than 900 million people or one in every ten people will experience hearing loss [3]. Hearing loss can be caused by factors such as taking too much medication, ear infections, too often in a noisy place [4],[5]. Middle ear diseases, such as chronic otitis media, otosclerosis, and cholesteanoma, often cause conductive hearing loss, which affects millions of people around the world [6]. The main factor is aging so that parents are more likely to experience hearing loss than young people [7]. Hearing loss can be a hindrance in communicating. In addition, hearing loss can impede social involvement, causing a person with hearing impairment to feel depressed, isolate themselves, and exit social activities [7], [8]. A simple cervical test can help to find out early hearing disorders such as tuning fork tests and whisper sound tests, but the tests are less standardized and do not provide objective data [8]. A pure tone audiometer test is required to address the problem because it is very useful for determining the auditory threshold for the degree characterization, type and configuration of hearing loss [9],[10] and simple in hearing testing[11]. However, a conventional audiometer may take a long time to perform a hearing test. Many researchers have created and developed a pure tone audiometer for early detection of decreased hearing ability, for example, in 2012 Isler and Yigit have created a portable Audiometer with 2 modes i.e. manual and automatic, this