Underwater acoustic characterization of electret hydrophone with speaker as sound source

Authors

Daniella Torres Hernandez ⋅ PH National Institute of Physics, University of the Philippines Diliman
Giovanni A Tapang ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

In this paper, we fabricated a hydrophone using electret microphone and an underwater speaker and characterized acoustically in air and in water. Fabricated electret hydrophone is connected to a pre-amplifier and audio amplifier and speaker transmits amplified sine wave from a signal generator. Preliminary characterization results were presented. Frequency response and SNR vs. Frequency plots show that hydrophone’s responsive bandwidth is from 500 Hz to 100 kHz, in water and 480 Hz to 100 kHz in air.

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Issue

2020: Proceedings of the 38th Samahang Pisika ng Pilipinas Physics Conference

Shedding light on the pandemic through the lens of physics
Pagtanglaw sa pandemya sa lente ng pisika
19-23 October 2020

This is the first fully online SPP Physics Conference. Please visit the SPP2020 activity webpage for more information on this year's Physics Congress.

Article ID

SPP-2020-3D-04

Section

Instrumentation, Imaging, and Signal Processing (Short Presentations)

Published

2020-10-19

How to Cite

[1]

DT Hernandez and GA Tapang, Underwater acoustic characterization of electret hydrophone with speaker as sound source, Proceedings of the Samahang Pisika ng Pilipinas 38, SPP-2020-3D-04 (2020). URL: https://proceedings.spp-online.org/article/view/SPP-2020-3D-04.