Mike0815
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- CamillaDSP
Hello,
could someone help me understand why my setup does show different distance values for a constant speaker mic setup when using acoustic timing reference and not when utilizing loopback ?
My wiring with acoustic timing reference:
Out: Mac->HDMI->Receiver->PreOut-L-> ext.DSP_Ch1->Amp->speaker
Ref out: Mac->HDMI_7->Receiver->PreOut-Back_Surround-> ext.DSP_Ch2->Amp->tweeter
In: Mac<-USB<-Scarlett_2i2_Ch1<-Mic
When repeating measurements without any change in distance between mic and speaker or reference tweeter I get some millimeters variation. Interestingly some fixed ones like 2x 0mm, 3x 11mm, 4x 26mm etc. mixed with no apparent pattern.
My loopback setup:
Out: Mac->HDMI->Receiver->PreOut-L-> ext.DSP_Ch1->Amp->speaker
Ref out: Mac->HDMI_7->Receiver->PreOut-Back_Surround-> ext.DSP_Ch2
Loopback ref in: Mac<-USB<-Scarlett_2i2_Ch2<-ext.DSP_Ch2
In: Mac<-USB<-Scarlett_2i2_Ch1<-Mic
This shows basically no distance variations over lets say 10 measurements.
Shouldn't this be rather the way around with no common clock between HDMI and USB?
Regards
Michael
could someone help me understand why my setup does show different distance values for a constant speaker mic setup when using acoustic timing reference and not when utilizing loopback ?
My wiring with acoustic timing reference:
Out: Mac->HDMI->Receiver->PreOut-L-> ext.DSP_Ch1->Amp->speaker
Ref out: Mac->HDMI_7->Receiver->PreOut-Back_Surround-> ext.DSP_Ch2->Amp->tweeter
In: Mac<-USB<-Scarlett_2i2_Ch1<-Mic
When repeating measurements without any change in distance between mic and speaker or reference tweeter I get some millimeters variation. Interestingly some fixed ones like 2x 0mm, 3x 11mm, 4x 26mm etc. mixed with no apparent pattern.
My loopback setup:
Out: Mac->HDMI->Receiver->PreOut-L-> ext.DSP_Ch1->Amp->speaker
Ref out: Mac->HDMI_7->Receiver->PreOut-Back_Surround-> ext.DSP_Ch2
Loopback ref in: Mac<-USB<-Scarlett_2i2_Ch2<-ext.DSP_Ch2
In: Mac<-USB<-Scarlett_2i2_Ch1<-Mic
This shows basically no distance variations over lets say 10 measurements.
Shouldn't this be rather the way around with no common clock between HDMI and USB?
Regards
Michael
Last edited: