REW using an EVO 8 USB Audio Interface

[Chuck Gerlach]

I have not used a multi-mic input device before and am having a couple of issues. While I can get REW to generate audio through the EVO 8, the mic (according to REW) does not seem to "hear" it as the REW SPL meter shows nothing. But I know the mic is operating properly (and the EVO hears it) as when I tap on the tip of the mic, it shows on the mic input meter on the EVO.

I am assuming that it is not working properly as I must not have properly calibrated the sound card but not sure what I am doing incorrectly. Any assistance on this issue will be greatly appreciated.

Lastly, the EVO offers two options on loop-back. One is to have the loop-back signal combined with the microphone signal and the other is to use the dedicated loop-back channels. I assume I want to do the former.

Thanks

 

[John Mulcahy]

You do NOT want anything mixed with the mic signal.

Most likely reasons for not seeing the levels you expect are wrong input channel selected or a gain control/mute somewhere along the input path.

 

[Chuck Gerlach]

Thanks for your response.

So if the timing (loop-back) signal is not mixed with the mic signal, how does REW match the timing signal with a specific measurement?

I will check again but I'm 99% sure I have the correct input channel selected so will need to look around at where some muting or gain control is active.

 

[John Mulcahy]

If the timing signal is a loopback connection REW listens for it on the channel selected as the ref input.

 

[sm52]

Chuck Gerlach,​

the loopback connection must be physical, from the physical output to the physical input by a cable.

 

[Chuck Gerlach]

Chuck Gerlach,​

the loopback connection must be physical, from the physical output to the physical input by a cable.

Thanks for your response but the EVO works fine when using its internal loopback option. No physical connection is required.

 

[sm52]

but the EVO works fine when using its internal loopback option. No physical connection is required.

I'll know. Previously, with other interfaces, the inner loop didn't work.