• Get involved.
    We want your input!
    Apply for Membership and join the conversations about everything related to broadcasting.

    After we receive your registration, a moderator will review it. After your registration is approved, you will be permitted to post.
    If you use a disposable or false email address, your registration will be rejected.

    After your membership is approved, please take a minute to tell us a little bit about yourself.
    https://www.radiodiscussions.com/forums/introduce-yourself.1088/

    Thanks in advance and have fun!
    RadioDiscussions Administrators

Non Terrestrial Audio Processing

R

Robert Bass

Here’s another question about audio processing.

I’ve got a DSP9024 from Behringer. This is a 6 band multiband C/L, for those of you who aren’t familiar with it. This processor isn’t really designed for terrestrial broadcasting, but the intended use is to make mix CD’s for various occasions. This processor does not have clippers.

I finally have it sounding really good for the intended use, but when looking at the graphic image of the wav file, I notice something peculiar. The top part of the image has slightly more noticeable peaks than the lower part of he image. The lower part actually looks like it has been slightly clipped. The images are identical in both the left and right channels.

I’m just curious is this due to the fact that the unit doesn’t have clippers, or is something else at play?

Thanks,

R
 
I've never looked at the output on a scope, but I have had two of them & after much playing, have never really gotten the sound I want. Even with the quickest attack time (which I believe is 1 ms--horribly slow attack time), some audio has a "slap" at the beginning. They do have a "limiter", but as you state, it's not a clipper. When using the limiter, it catches those large overshoots & makes them sound even worse. Behringer had multi-band processing figured out about 12 years ago with the Combinator MDX 8000. That one sounds clean & smooth. I emailed tech support on the sloppy attack issue on the 9024. They acknowledged it & said they had no plans to improve it...no wonder they sell for $50 on Ebay...
 
I'll see if I can post a graphic image file of what I am seeing, in the next day or so. I don't use the limiter portion of the 9024, due to the reasons you mentioned.

R
 
OK I found what the problem was... Bad mastering ;D

I've got it fixed now. If anyone wants some processing demos, let me know and I'll upload some.

R
 
wgliradio said:
I don't know how anyone could make that box sound good.
Click to expand...

It all depends on some of the same principles used for terrestrial processing setups. You have to know a little (OK actually a lot) about attack / release time adjustments, Compression Ratios and Compressor Threshold. It also depends on what is in front of the unit. This processor was really designed for mastering applications, and most of the pre-sets it comes with are pretty much useless for mixing programming material.

It's not the ideal box for mega squash applications, but if you want gentle, subtle processing, it handles this quite well. Just be prepared to spend quite a bit of time setting it up. It's taken me the better part of two months to nail it down, and there were times I had to walk away for a day or two due to fatigue.

R
 
It took a while but I was able to find the "sweet spot" on my 9024. The limiter is disabled since it is useless and the tube emulator is added for a little spice. Another issue using the 9024 for a live application is delay issues. I use mine for recreation when I feel like a radio sound when listening to a few tunes.

On another note, I've heard great things about the discontinued MDX-8000. I would love to find one to play with to find its sweet spot.
 
An Ultradyne 9024 can be made to sound decent if you disable its limiter and put a Behringer Ultramizer Pro DSP1424P behind it. It has a loudness maximizer. You can add a bit of stereo separation with it. It also has a bass enhancer and an exciter.
 
Status
This thread has been closed due to inactivity. You can create a new thread to discuss this topic.


Back
Top Bottom