[SBE] Hybrid issues.

[Henry M. Seiden]

Curt,

You probably answered your own question with the telco delay/echo  
cancel. The caller hears him/herself through the phone system, not  
your console which results in the echo product being reflected back in  
to the Telos. And the fact that it's not on every calls proves that  
the phone system is to blame. Further proof? When the caller level  
into your console is adjusted downward does the delay the caller hears  
get worse or better or no change?

Can you identify specific exchanges where the calls originate as the  
cause? Can you? If so, maybe your local Bell or service provider can  
figure it out?

Would the calls that are giving trouble be originating from Vonage or  
IP based systems?

As to a fix, you might have to resort to a noise gate set rather high  
to kill off the incoming call's Telos output. It could sound kinda  
bad, depending on the call, but that's all I can think of.

Henry S.


On Jan 29, 2009, at 11:07 , Curt Yengst wrote:


> 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

> Sent: Thu 1/29/2009 11:06 AM

> To: sbe member discussion mail list

> Subject: Re: [SBE] Hybrid issues.

>

>

>

> 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>

> Date: Thursday, January 29, 2009 9:59 am

> Subject: Re: [SBE] Hybrid issues.

>

>> 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.

>>

>> -Chris

>>

>> Christopher "Doc" Tarr CBRE, CBNT, DRB

>> Director of Engineering/IT

>> Entercom Milwaukee/Entercom Madison

>>

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

>> <cyengst at star991fm.com> wrote:

>>> Dear partners in crime:

>>>

>>> 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?

>>>

>>> Curt Yengst, CSRE

>>> WAWZ

> _______________________________________________

> 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


--

-------------- next part --------------


Techworks Professional Systems, Inc. Henry M. Seiden, Founder
henry<at>techworkspro<dot>com