From cefc09ae7dd88cd6b92412881888404da1abdfcb Mon Sep 17 00:00:00 2001
From: Jack Humbert <jack.humb@gmail.com>
Date: Mon, 24 Jul 2017 12:44:03 -0400
Subject: adds option for alt pitch standards

---
 quantum/process_keycode/process_audio.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'quantum')

diff --git a/quantum/process_keycode/process_audio.c b/quantum/process_keycode/process_audio.c
index eb74796fa..32057ae8d 100644
--- a/quantum/process_keycode/process_audio.c
+++ b/quantum/process_keycode/process_audio.c
@@ -6,10 +6,14 @@
 #endif
 float voice_change_song[][2] = VOICE_CHANGE_SONG;
 
+#ifndef PITCH_STANDARD_A
+    #define PITCH_STANDARD_A 440.0f
+#endif
+
 static float compute_freq_for_midi_note(uint8_t note)
 {
     // https://en.wikipedia.org/wiki/MIDI_tuning_standard
-    return pow(2.0, (note - 69) / 12.0) * 440.0f;
+    return pow(2.0, (note - 69) / 12.0) * PITCH_STANDARD_A;
 }
 
 bool process_audio(uint16_t keycode, keyrecord_t *record) {
-- 
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