It is an application which displays the pitch of the sound inputted from the microphone on a graph in real time. A horizontal axis becomes time and the vertical axis has become a scale. [Feature] - Display the pitch inputted from the microphone in real time. - Display 7 octaves from C1 to B7. - Scroll the display range automatically. - Display the present scale on the upper part of a screen in written form. - Correspond to horizontal rotation of a screen. - A hold is possible by carrying out th