feat: Add an option to preserve audio pitch when emulation speed changes, integrating it into core configuration and both Qt and Android UIs.

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/BooleanSetting.kt

@@ -31,6 +31,7 @@ enum class BooleanSetting(
         false
     ),
     MAIN_AUDIO_FILL_GAPS(Settings.FILE_DOLPHIN, Settings.SECTION_INI_CORE, "AudioFillGaps", true),
+    MAIN_AUDIO_PRESERVE_PITCH(Settings.FILE_DOLPHIN, Settings.SECTION_INI_CORE, "AudioPreservePitch", false),
     MAIN_BBA_XLINK_CHAT_OSD(
         Settings.FILE_DOLPHIN,
         Settings.SECTION_INI_CORE,

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsFragmentPresenter.kt

@@ -556,6 +556,14 @@ class SettingsFragmentPresenter(
                 R.string.audio_fill_gaps_description
             )
         )
+        sl.add(
+            SwitchSetting(
+                context,
+                BooleanSetting.MAIN_AUDIO_PRESERVE_PITCH,
+                R.string.audio_preserve_pitch,
+                R.string.audio_preserve_pitch_description
+            )
+        )
         sl.add(
             IntSliderSetting(
                 context,

Source/Android/app/src/main/res/values/strings.xml

@@ -188,6 +188,8 @@
     <string name="audio_buffer_size_description">Controls the number of audio samples buffered. Lower values reduce latency but may cause more crackling or stuttering. If unsure, set this to 80 ms.</string>
     <string name="audio_fill_gaps">Fill Audio Gaps</string>
     <string name="audio_fill_gaps_description">Repeat existing audio during lag spikes to prevent stuttering. If unsure, leave this checked.</string>
+    <string name="audio_preserve_pitch">Preserve Audio Pitch</string>
+    <string name="audio_preserve_pitch_description">Keeps audio at normal pitch when changing emulation speed. Without this, audio pitch changes proportionally with speed. If unsure, leave this unchecked.</string>
     <string name="audio_volume">Audio Volume</string>
 
     <!-- Path Settings -->