[Mark Fuller]

When aligning subwoofer phase/delay against mains, a loopback timing reference is crucial.

UMIK mic's latency is different than the interface's DAD latency.

How does this get reconciled or is it not possible with a USB mic?

 

[Wayne A. Pflughaupt]

AFAIK, it's impossible to do timing with a USB mic because a loopback reference cannot be generated.

Regards,
Wayne

 

[Mark Fuller]

Thank you, Wayne. On to another measurement mic.

 

[lombarmj]

When aligning subwoofer phase/delay against mains, a loopback timing reference is crucial.

UMIK mic's latency is different than the interface's DAD latency.

How does this get reconciled or is it not possible with a USB mic?

Are you using REW? Isn't this handled by using the timing reference in the measurements before and after each sweep? And, there's the relatively new Alignment Tool.

 

[crossrh]

What about the Acoustic Timing reference, where you select a speaker to output a chirp prior to each sweep? Isn't that how everyone does it, or am I missing something here?