When I hear sounds(like an airplane flying), I hear pitches or notes. For example, airplanes flying noise going down a scale. They start at a B natural and descend from there, but usually end at a either an A-flat natural, G natural, or F natural depending on what I hear cause it varies on the wind, how fast the airplane goes, the altitude, and other stuff like that I guess. I can also tell what notes are on a piano and usually the keys of songs. I heard my choir teacher say that I have perfect pitch, so is this true?