I have sampled a trumpet note and keymapped it to MIDI notes 55 to 65. If I play MIDI note 60 and hear middle C, what will I hear if I play MIDI note 62?

The answer is D.

Explanation:

The musical interval between two notes depends on the ratio of their frequencies. An octave is a ratio of 2:1, an octave comprises 12 equal semitones. Each semitone therefore has a ratio of:

≈ 1.059

Then by convention, A4 is often set at 440 Hz and has MIDI note 69.

MIDI note 68 wich is one semitone below A4, that is, G#:

G#= =415.3 Hz

MIDI note 67 wich is one semitone below G#, that is, G:

G= =392 Hz

MIDI note 66 wich is one semitone below G, that is, F#:

F#= =369.9 Hz

MIDI note 65 wich is one semitone below F#, that is, F:

F= =349.23 Hz

MIDI note 64 wich is one semitone below F, that is, E:

E= =329.63 Hz

MIDI note 63 wich is one semitone below E, that is, D#:

D#= =311.13 Hz

Therefore MIDI note 62 wich is one semitone below D#, that is,D:

D= =293.6 Hz

hope it