| 176 | } |
| 177 | |
| 178 | float Note::midiNoteToFrequency(u8 note) const { |
| 179 | if (note == NO_NOTE) { |
| 180 | return 0.0f; |
| 181 | } |
| 182 | |
| 183 | // f = 440 × 2^((n - 69) / 12) |
| 184 | float semitones = static_cast<float>(note) - A4_MIDI_NOTE; |
| 185 | return A4_FREQUENCY * fl::powf(2.0f, semitones / 12.0f); |
| 186 | } |
| 187 | |
| 188 | float Note::calculatePitchBend(float hz, u8 note) const { |
| 189 | if (note == NO_NOTE || hz <= 0.0f) { |