This program is able to calculate the sound of frequency using TI-83 Plus with the CBL/CBL2 and the microphone. It can display sound of pitch with a keyboard, lower and higher pitch name. Also it can play the sound by calculated frequency using the CBL2 and display a collected data and a near function. These functions are useful for educational use, I think. This program was announced on 8th meeting of T^3 Japan in 2004.
Please transfer "TITUNERS.8xp" to your calculator and ungroup it. "TITUNER " (Program) and a "Pic0" (Picture) will be generated in your calc's RAM.
Connect the CBL to the TI-83 Plus, connect the CBL to microphone on the CH1 port and turn on the CBL. Run "prgmTITUNER" on the home screen.
Bring close to a sound source (e.g. Tuning fork) to the microphone, and press any key. Data will be collected, then calculating the sound of frequency. Be careful for sound not to stop until "CALCULATING..." is displayed.
The result of calculation will be displayed. The menu will be displayed when any key is pressed.