Film-Tech Forum ARCHIVE: Digital Delay Processors

This is topic Digital Delay Processors in forum Film-Yak at Film-Tech Forum ARCHIVE.

To visit this topic, use this URL:
https://ft-forum.com/ft/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=8;t=001714

Posted by Paul G. Thompson (Member # 655) on 01-30-2003, 06:40 PM:

I might be in need of a good rack mounted digital processor that has a big enough buffer to delay audio by one to 5 seconds. Can anyone provide some recommendations?

I need something that is reasonable in price and reliability, and yet produce broadcast quality sound.

Posted by Brad Miller (Member # 2) on 01-30-2003, 07:15 PM:

You mean just a digital delay and nothing more? (Output of just the delayed audio, not a "mix" of the original and delayed.)

I've been looking for that too.

Posted by Chris Markiewicz (Member # 1415) on 01-30-2003, 07:36 PM:

TC Electronic Has a model D22 2-in 2-out digital delay designed for broadcast work; up to 2600ms delay on each channel. Most pro-audio signal processors include digital delay functions. Try Markertek or Broadcast Supply Warehouse.for other options.
Chris

Posted by Paul G. Thompson (Member # 655) on 01-30-2003, 08:13 PM:

Brad, yes - just delay only. No other options needed in our proposed application.

Posted by Steve Guttag (Member # 268) on 01-30-2003, 08:15 PM:

1-5 seconds eh? The RANE RPM-26Z will do from 1-5 seconds but probably isn't what you want. Have your considered one of those old magnetic tape loops [Wink]

Steve

Posted by David Stambaugh (Member # 1102) on 01-30-2003, 08:16 PM:

TimeCache. Delays up to 15 secs. Requires their proprietary rack-mount host - probably not cheap.

Eventide BD500 Broadcast Profanity Delay Delays up to 8 secs. Rack mount. Looks like around $3300, less for B-Stock? (see next link).

Broadcast Supply Warehouse has several models.

Posted by Paul G. Thompson (Member # 655) on 01-30-2003, 08:51 PM:

Steve said:

quote:
Have your considered one of those old magnetic tape loops...

Yes, I did. However, we don't use reel-to-reel anymore. We have only two operational magnetic tape machines remaining, and they are just sitting there collecting dust. The delay between "source" and "pb" is only about .25 seconds at 3.75 ips. Not long enough of a delay in case we have to bump it off the air. [Frown]

David, I checked out your links...man! that stuff is pricey.....I doubt if we would spring for that because what we might do is still in its planning stages, and we don't even know if it is going to work with our listening audience.

What we want to do is have enough time ot override an abusive or intimidating phone call before it is aired to the public. We don't trust the type of language they might shout over the phone, and we certainly don't want that type of language being broadcasted from our stations.

Posted by Mark Gulbrandsen (Member # 72) on 01-30-2003, 08:55 PM:

You can do the same thing with a solid state recorder/player otherwise known as a digital brodcast delay. There are a bunch of them out there...here is a link to one type.
http://www.harmony-central.com/Newp/1999/D22.html
Mark

Posted by Paul G. Thompson (Member # 655) on 01-30-2003, 09:03 PM:

Mark, that fits the ticket. Now I have to find out what the damned thing costs...

Posted by David Stambaugh (Member # 1102) on 01-30-2003, 09:07 PM:

Looks like the TC Electronic D22 lists for $2000, street price is around $1550. Here's a seller: Bayview Pro Audio Only 2600 milliseconds max delay though.

That unit was introduced in 1999. Maybe there's some used ones floating around cheaper?

Posted by Paul G. Thompson (Member # 655) on 01-30-2003, 09:11 PM:

David, I hope so.... [Smile]

Posted by Michael Schaffer (Member # 1204) on 01-30-2003, 09:17 PM:

Take a look at Klark Teknik digital delays (www.klarkteknik.com).

Posted by Daryl C. W. O'Shea (Member # 1303) on 01-30-2003, 09:51 PM:

You might want to look at the Alesis MidiVerb 4. I think I only paid about $500CDN for my MidiVerb II. I used to use it all the time for rear speaker delays for live shows it worked really well.

Posted by William Hooper (Member # 71) on 01-31-2003, 01:59 AM:

Are you looking for a broadcast/profanity delay? Have you checked eBay?

There's an Australian Eventide up now: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3004566369&category=3319

I saw a Symetrix 610 on eBay about a year ago.

Posted by Paul G. Thompson (Member # 655) on 01-31-2003, 08:44 PM:

Thank you, gentlemen. Looks like we might settle for an "Air Tools Model No. 6100" which was built by Symetrix. BSW handles that line.. [Smile]

Posted by Steve Guttag (Member # 268) on 01-31-2003, 10:47 PM:

Of course you could still do it the old fashioned way....

If sound travels at approximately 1130ft/sec and you want 5-seconds of delay you need just 5650 feet of pipe. Then place a driver at one end and a microphone at the other. You could "plumb" it so you have several different drivers at different parts of the pipe so you could "select" different delay values. Alternately, have several different holes for various microphones.

Steve

Posted by Paul G. Thompson (Member # 655) on 01-31-2003, 10:55 PM:

Well, let's see.....I don't know for sure how many microseconds it takes for one foot of coax, but one helluva BIG roll should do the trick, too. [Big Grin]

Steve, those are some nice picture transitions... [Smile]

Posted by Kenneth Wuepper (Member # 1174) on 02-04-2003, 10:18 PM:

Paul,
Our local station, WSGW 790 KHz is a talk radio station and they have a unit that is really slick. It starts in real time and builds gently to about 4 seconds of delay. The host presses one button and it drops the delayed audio and reverts to the studio microphone. When you return to the phone line it builds back to the regular delay. The system sounds very good and you don't have to be a juggler to work with it. Like with the fixed delay, you have to anticipate the end of the commercial and start talking the 4 seconds before the spot ends or there will be a gap on air.

I think the engineer would be willing to share his info with you. Try contacting the station directly by Email.

KEN