Mobile Physics Education Lab (for sonic experiments)

-An application developed at the Mobile Physics Education Research Laboratory (Diracma Project), which can be used for sound wave experiments, etc. Please refer to the Diracma project site for details (https://sites.google.com/view/diracma888/).

・ Pressing "*. * Hz" in the upper left will generate a sound wave of the specified frequency (the frequency is displayed on the button, and the frequency can be changed from Frequency in the menu).

-Pressing the "Next" button increases the frequency of the generated sound waves by 10Hz (this increment can also be changed in the menu).

-Press the "Record" button to record sound waves (press again to stop recording).

-To hear the recorded sound, press the "Play" button (press again to stop).

・ Press "Sound Graph" to display the recorded sound as intensity-time graph.

-The graph can be expanded and moved by touching, the time at the point of touch is displayed in the Time above the graph, and the intensity is displayed in the upper right numerical value.

・ To restart measurement, press “Restart”.

-Recorded sound data is used only for sound reproduction, graphing, and graph value acquisition (data is not transmitted to the outside without permission).

・ Examples of sound wave experiments using the application DiracmaS (sound velocity measurement, air column resonance, etc.) are described in the Physical Science Education Conference of Japan Society for Physical Education (2017), p. It has been.

-DiracmaA and DiracmaJump are released as applications for dynamics. We will continue to develop it as the Diracmas series, so thank you.