"A440 is widely used as concert pitch in the United Kingdom and the United States. In continental Europe the frequency of A4 commonly varies between 440 Hz and 444 Hz. In the period instrument movement, a consensus has arisen around a modern baroque pitch of 415 Hz (with 440 Hz corresponding to A♯), a 'baroque' pitch for some special church music (in particular, some German church music, e.g. the Pre-Leipzig period cantatas of Bach) known as (Chorton pitch) at 466 Hz (with 440 Hz corresponding to A♭), and classical pitch at 430 Hz."
Frequency is currently
440
Frequency Values with Triangle wavetype sound similar to old arcade games.