TOPIC:

I'm running into a bit of a problem, am hoping you all can help.

Got my DDRC-24 hooked up to my amp, USB to my PC. I get through to volume calibration and things seem to be going well. Then I get to the measurement phase and....no audio. Nothing at all. I tried running some audio in the background just to see what would happen. I can hear the audio running non-stop during the volume calibration phase, but then when the sweep should occur, the volume drop to nothing.

I'm probably making some silly, obvious mistake, but for the life of me I can't figure out what I'm doing wrong. 

Do you get sound when doing the volume calibration?

I do! I even set it louder than I typically would listen. When I get to taking measurements, there's just no audio. 
 

ejohn911 wrote:

I do! I even set it louder than I typically would listen. When I get to taking measurements, there's just no audio. 


 

Are you getting the waveform animation when the measurements should happen?

This is very strange and I'm struggling to see how the volume calibration bit could work but the measurements don't since they should both be using an identical signal path. 

Are you using one of the versions of the DDRC-24 plugin and firmware that was released in February or something older? And what computer OS and version of Dirac Live are you using?

I'm using Dirac version 3.2.2, the version of the plug in is 1.15. Realized after your post that I hadn't updated the firmware when the device arrived so I went ahead and did that.

Tried measuring again. The volume calibration seems to go okay, can hear it very loud. When I got to measurements, I moved close to the speaker and could hear a sweep happening but it was so faint that I would have missed it were I not listening closely. Will attach a couple of photos from the Dirac software.

Thanks for your help, it's much appreciated. 

When you calibrate speaker volume I think -30db is low. You want it around -12dB to -15dB.

Do that and try again.

asx77 wrote:

When you calibrate speaker volume I think -30db is low. You want it around -12dB to -15dB.

Do that and try again.

Bear in mind that required levels will be system dependent. What might be sensible in one system could cause damage in another.

But the mic was picking up the level as -30dB. If we all use the same calibrated mics arent all our -30dBs about the same SPL level?

asx77 wrote:

But the mic was picking up the level as -30dB. If we all use the same calibrated mics arent all our -30dBs about the same SPL level?

Ah! I read your post to mean the master volume setting since this is what you actually adjust, but having now looked at the photos as well as this comment I see you were referring to the measured signal level  . I'd have thought -30 dB acoustic level should be OK though, and that certainly shouldn't be causing what is happening. 

I have exactly same problem too

Me too.

Are all three of you with issues new users, or did any of you have things working before? If you did, has anything obviously changed that may have caused this?

In my case, I'm a new user, was just setting things up for the first time. Haven't had a chance to retry at a higher volume as previously suggested, will post as soon as I do.

One other thing I'll mention in passing is that I'm using Windows 11. Not sure if that would be relevant in any way, but thought I'd mention it just in case. 

ejohn911 wrote:

One other thing I'll mention in passing is that I'm using Windows 11. Not sure if that would be relevant in any way, but thought I'd mention it just in case. 

It may well be and is the sort of thing I was looking for in others for whom the situation may have changed, i.e. it worked for Windows 10 but not Windows 11. 

I'm using Windows 10.

In the past, ddrc-24 was used, and normal measurement was possible.

In the past, it was sold secondhand and recently purchased secondhand, but only measurements are not in progress.

Volume calibration is output normally, but only when measured, extremely small and distorted sweep sounds are played, making it impossible to measure normally.

Delete all programs and drivers, delete all temporary files and temporary folders, and reinstall them, and install the old version of the program, but it was useless.

The only thing I haven't done is to downgrade the ddrc-24 firmware.
I'm using the latest firmware, so I went downgrade, but it didn't work normally, so I installed the latest firmware again.

Please understand that I am using a translator.