Windows音频体系UAA
Windows音频设备默认采样率
2023-05-26
139
0
在注册表
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MMDevices\Audio\Render/Capture\{DEVICEGUID}\Properties
下，注册表项：{f19f064d-082c-4e27-bc73-6882a1bb8e4c},0即PKEY_AudioEngine_DeviceFormat描述符在共享模式下该音频设备的采样率。
"{f19f064d-082c-4e27-bc73-6882a1bb8e4c},0"=hex:41,00,34,51,01,00,00,00,fe,ff,\
02,00,44,ac,00,00,10,b1,02,00,04,00,10,00,16,00,10,00,03,00,00,00,01,00,00,\
00,00,00,10,00,80,00,00,aa,00,38,9b,71
"{a2a3fff4-353f-407c-9d86-1f9dc7d5a606},2"=hex:41,00,34,51,01,00,00,00,0a,00,\
00,00,01,00,00,00,20,ea,90,9e,93,b4,d1,4f,a1,a8,7e,13,61,a9,56,cf,02,00,00,\
00,b9,01,00,00,b9,01,00,00,b9,01,00,00,b9,01,00,00,b9,01,00,00,fe,ff,02,00,\
44,ac,00,00,10,b1,02,00,04,00,10,00,16,00,10,00,03,00,00,00,01,00,00,00,00,\
00,10,00,80,00,00,aa,00,38,9b,71,e0,01,00,00,e0,01,00,00,e0,01,00,00,e0,01,\
00,00,e0,01,00,00,fe,ff,02,00,80,bb,00,00,00,ee,02,00,04,00,10,00,16,00,10,\
00,03,00,00,00,01,00,00,00,00,00,10,00,80,00,00,aa,00,38,9b,71
"{74e4357a-7959-47a4-a8b2-feb2ffd48427},2"=hex:41,00,4c,00,01,00,00,00,0a,00,\
02,00,44,ac,00,00,80,bb,00,00,01,00,10,10,01,00,04,00,01,00,34,00,7c,88,ff,\
ff,20,ea,90,9e,93,b4,d1,4f,a1,a8,7e,13,61,a9,56,cf,00,00,00,08
该值的内容应该是IAudioClient::GetMixFormat 的函数返回的内容，具体本人未确定。
该GUID定义为PKEY_AudioEngine_DeviceFormat
参考资料：
