[SBE] audio problem

[Ron Castro]

I have seen some good responses posted about the problem and I would like to 
add that you should check the bit rate that you are using for your MP3s. 
Since they will go through some very heavy processing at the stations, even 
the slightest distortion will be very noticeable.  For voice-over work that 
I do, I always use 320 kbps and that sounds very clean on the air on AM or 
FM stations, regardless of the amount of processing.

         Ron Castro
 Chief Technical Officer
    Results Radio, LLC
               N6IE
      www.N6IE.com


----- Original Message ----- 
From: "John Poray" <jporay at sbe.org>
To: <sbe at sbe.org>
Sent: Wednesday, August 22, 2007 6:01 AM
Subject: [SBE] audio problem



> Can anyone on the SBE Roundtable offer an opinion to the audio problem

> described in the message below?  The person asking the question is not a

> member of SBE and therefore not subscribed to the Roundtable so please 

> reply

> off-line to him.    admaker at ntelos.net

>

>

>

> Thanks,

>

> John Poray  <mailto:y at sbe.org>

>

> *****************************************

>

> John L. Poray, CAE

>

> Executive Director

>

> Society of Broadcast Engineers, Inc.

>

> 9102 N. Meridian Street, Suite 150

>

> Indianapolis, IN 46260 USA

>

> Phone: (317) 846-9000   Fax:(317) 846-9120

>

> <mailto:jporay at sbe.org> jporay at sbe.org

>

>

>

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

> From: Michael Holmes [mailto:admaker at ntelos.net]

> Sent: Tuesday, August 21, 2007 6:55 PM

> To: mclappe at sbe.org

> Subject: Request re signal processor difficulty

>

> Sirs:

>

>            I am a radio commercial producer of 30 years experience.

>

>            I have a signal processor called an SPL (Sound Performance

> Laboratory, Germany) Vitalizer.  It enhances audio signals with a

> combination of dynamic EQ, amplitude-controlled phase correction and

> harmonic filtering.  The result is greatly enhanced transparency.

>

>            This device is used in recording studios, post-production

> facilities, and live sound reinforcement.  It is advertised for these

> purposes plus as an enhancing device in broadcast facility audio chains.

>

>            For some reason, it distorts my commercials on the air, and has

> since I began using it.  I hear no distortion whatsoever in my studio.   I

> use its effect sparingly.  I'm not overdriving anything, and people at the

> stations say that my MP3's sound wonderful in their monitors (internal, 

> not

> off-air monitors, which exhibit the distortion to them as well).  The

> company that manufactures this device is well-respected worldwide and has 

> a

> good-sized range of audio products:

>

>           SPL Home:      http://spl-usa.com/index.html

>

>           Vitalizer page:  http://spl-usa.com/V_MK2/in_short.html

>

>            If it is possible, I would like to put this problem before your

> membership in the hope that someone has had experience with this device 

> and

> can offer insight or solution to this difficulty.

>

>            I think it important to note that only someone familiar with

> this device will be able to address the issue.  Again, my levels are good,

> and are identical with or without the device in the chain.  With the 

> device

> I get on-air distortion.  Without I don't.  To the best of my knowledge

> there are no other variables or differences.   The stations report that

> in-house everything sounds fine.

>

>            Thanks very much!

>

> Michael Holmes

>

> admaker at ntelos.net

>

>

>

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>

>

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