[grc] Sound Quality Issues

[Donna]

Could be a blown diaphragm or cable connection, or a cold solder that finally gave out. 

                   Donna DiBianco
        Station Start-up Specialist

> On Nov 10, 2016, at 5:45 PM, Ken Freedman via grc <grc at maillist.peak.org> wrote:
> 
> This most definitely sounds like a phase issue  the dead giveaway being
> that the problem worsens when you put it into mono. Phase is when the
> polarity of either the left or the right channel gets reversed so the left
> and right channels either partially or completely cancel one another out.
> 
> Common sources of things being out of phase are miswired jacks and cables.
> Sometimes records and CDs also get manufactured out of phase. You can
> analyze phase in many audio editing programs such as Pro Tools or Adobe
> Audition. I am not sure if Audacity will measure phase or not. We use an
> oscilloscope to read phase at FMU.
> 
> -Ken
> 
> 
> - Ken Freedman
> 
> 
> ~~~~~~~~~~
> Audience Engine / WFMU
> PO Box 2011
> Jersey City, NJ 07303-2011
> 
> Contact Methods Ranked Best to Worst:
> 
> ken at audienceengine.net
> ken at wfmu.org
> 
> @WFMU
> 
> http://wfmu.org
> 
> (201) 521-1416 ext 225
> ~~~~~~~~~~~
> 
> 
> 
> 
> On Thu, Nov 10, 2016 at 5:26 PM, David Klann via grc <grc at maillist.peak.org>
> wrote:
> 
>> Greetings Fellow Radio Geniuses!
>> 
>> We're running into an audio quality issue here at WDRT 91.9fm in rural
>> Western Wisconsin. I'm past the point of tearing my hair out in search
>> of the root cause. I'll outline what I can here, and answer further
>> questions as they come in. Thanks in advance for your thoughts and help
>> diagnosing this.
>> 
>> Some facts:
>> 
>> - The quality of *some* (not all) spoken-word audio recorded in our
>> "Studio B" sounds like it was recorded with the person speaking through
>> "a metal pipe while in a tunnel" (that's the best description we've been
>> able to come up with)
>> 
>> - It *sometimes* depends on the radio people are listening to when it
>> happens
>> 
>> - Music recorded in the same studio from any source (analog vinyl, CD,
>> digital source, etc) sounds just fine
>> 
>> - One listener has noticed that it sounds "bad" when they listen with
>> their home receiver set to "mono" mode, and when they switch to "stereo"
>> mode it sounds fine
>> 
>> - The same audio sent to our Internet stream *usually* sounds "normal",
>> but sometimes sounds "bad"
>> 
>> This has been an otherwise productive exercise for us because we've
>> learned of a few other misconfigurations in our audio chain. But this
>> one continues to haunt.
>> 
>> Again, I appreciate any thoughts you can share, and will provide more
>> info as requested. If off list, I'll summarize the "fix" to the list
>> when we figure this out.
>> 
>> Thanks!
>> 
>>  ~David Klann
>>   WDRT, 91.9fm, Viroqua, WI
>> 
>> 
>> 
>> _______________________________________________
>> grc mailing list
>> grc at maillist.peak.org
>> http://maillist.peak.org/mailman/listinfo/grc
>> 
>> 
> _______________________________________________
> grc mailing list
> grc at maillist.peak.org
> http://maillist.peak.org/mailman/listinfo/grc