[SBE] Hybrid issues.

[David R. Wilson]

That could also be the phone companies noise / echo reduction circuitry
not working right.  If it works on some calls and not on others I would
suspect one of the phone exchanges has a problem.

Dave

David R. Wilson
Engineer for the Cromwell Group
Nashville Tennessee
WBUZ WPRT WQZQ





> > 

> > ----- Original Message -----

> > From: Curt Yengst <cyengst at star991fm.com>

> > Date: Thursday, January 29, 2009 10:07 am

> > Subject: Re: [SBE] Hybrid issues.

> > 

> > > Not sure this is the issue. Although we don't use a profanity

> > > delay (yet), we do delay our analog signal to match up with our HD

> > > signal, which creates an on-air delay of about 8 seconds. This

> > > feedback/echo is happening almost instantly (less than half a

> second).

> > > ________________________________

> > >

> > > From: sbe-bounces at sbe.org on behalf of chscherer at everestkc.net

> > > Curt said:

> > > "One jock claims it only happens on live calls, not on pre-

> > > recorded calls."

> > >

> > > Is it this simple:

> > > Are the problem callers not turning their radios off?

> > 

> > > ----- Original Message -----

> > > From: Chris Tarr <chris at broadcastdoc.net>

> > > > Curt-

> > > >

> > > > I may be reading that wrong, but wouldn't you want "mics only"

> > > to feed

> > > > the hybrid? Not sure what the "hybrid out" feed would do (except

> > > > maybe offer an option to send audio form the audition channel

> > > down the

> > > > line) but the only thing that should feed the hybrid on a

> regular

> > > > basis is the microphones. While an echo is indicative of poor

> > > > cancellation, it seems like maybe the caller audio is getting

> > > fed back

> > > > down the line.

> > 

> > 

> > > > On Thu, Jan 29, 2009 at 9:46 AM, Curt Yengst

> > > > > I'm in the process of troubleshooting a complaint from some of

> > > > our jocks.

> > > > > When they take calls on our Telos 2x12, sometimes the call

> will

> > > > have a bit

> > > > > of feedback/echo under the caller. If the jock pots down the

> > > > 2x12 output at

> > > > > the console, it can be somewhat controlled, but then the

> > > > complaint is that

> > > > > the caller audio is too low in level (duh!). It doesn't happen

> > > > on every

> > > > > call, but it's enough to irritate them. We have the Telos 2x12

> > > > connected to

> > > > > a Wheatstone D-75 audio console, using their SP-75

> "Superphone"

> > > > input> module, which has its own mix-minus. It also has the

> > > > ability to generate

> > > > > separate outputs for hybrid out, "mics only" out (everything

> > > but the

> > > > > caller), and "callers only" out. We're using the hybrid outs

> to

> > > > feed the

> > > > > 2x12 inputs. The Caller 1 output of the 2x12 (which gets used

> > > > almost> exclusively) is split with a Y-cable, with one side

> going

> > > > to the caller

> > > > > input on the Superphone module and the other side going

> directly

> > > > to the

> > > > > caller side of our VoxPro workstation. One jock claims it only

> > > > happens on

> > > > > live calls, not on pre-recorded calls.

> > > > >

> > > > > I e-mailed Telos, and the answer was basically that it was a

> > > > phone company

> > > > > issue (poor echo cancellation), and since it was coming into

> the

> > > > station> sounding that way to begin with, there was nothing we

> > > > could do about it.

> > > > > Wheatstone basically said the only way their equipment would

> > > > possibly> exhibit this issue was if caller conferencing wasn't

> > > > properly set up. Since

> > > > > the problem happens with single callers, this is moot.

> > > > >

> > > > > Any thoughts?

> > _______________________________________________

> > The SBE Roundtable, SBE at sbe.org

> > To unsubscribe, go to http://seven.pairlist.net/mailman/options/sbe

> > 

> > http://seven.pairlist.net/mailman/listinfo/sbe

> > 

> > 

> _______________________________________________

> The SBE Roundtable, SBE at sbe.org

> To unsubscribe, go to http://seven.pairlist.net/mailman/options/sbe

> 

> http://seven.pairlist.net/mailman/listinfo/sbe