All symbols starting with `d' in iokit/Families/IOAudio

• decrementMasterVolume iokit/Families/IOAudio/IOAudioManager.cpp:316
• DEFAULT_INITIAL_INCREMENT iokit/Families/IOAudio/IOAudioManager.cpp:7
• DEFAULT_INITIAL_MUTE iokit/Families/IOAudio/IOAudioManager.cpp:6
• DEFAULT_INITIAL_VOLUME iokit/Families/IOAudio/IOAudioManager.cpp:5
• DefineStream iokit/Families/IOAudio/IOAudioBus.cpp:215