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Re: Initial SASS test shows bands of harmonics

Subject: Re: Initial SASS test shows bands of harmonics
From: "Bernie Krause" bigchirp1
Date: Sun Mar 11, 2012 10:05 am ((PDT))
External mic proximity to our LS-10 screen (especially w/ unshielded
cables) will likely introduce a lo-level signal at around 1k at some
level into the recording.

Bernie Krause


On Mar 11, 2012, at 9:42 AM, Wil Hershberger wrote:

> One of the culprits could be the LCD display on the recorder. If
> there are not well shielded they can induce electric and/or acoustic
> interference.
> It is best to keep the recorder well away from the mics.
>
> Wil Hershberger
> Nature Images and Sounds, LLC
> Hedgesville, WV
> The Songs of Insects
> My Blog
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> On Mar 11, 2012, at 11:47 AM, Mitch Hill wrote:
>
>> On 3/11/2012 10:48 AM, doctorobotnik wrote:
>>> I don't think feedback is involved because unlike a PA this is a
>>> one-way system. I also don't think it's likely for reverberations
>>> to build up within that space to such an extent.
>>
>> I get feed back with my LS-11 and ME-67 microphone when I'm running
>> high
>> mic gain and aim the microphone (on a pistol grip) upwards in front
>> of
>> me. But you are correct, in my case its picking up the sound in my
>> headphones which causes the feedback loop... Peter didn't mention if
>> headphones were in use or if recorder speaker was in monitor mode, I
>> assumed that like most of us he uses headphones for monitoring and
>> you
>> can definitely get feedback...
>>
>> However, in light of Peter's more recent reveal that he had the
>> recorder
>> sitting on the array, I'm more inclined at this point to think that
>> the
>> array was picking up the recorder, most likely radiated digital hash
>> based on the spacing of the bands up through the spectrum which would
>> explain the consistent level and spacing of the bands....
>>
>> --
>> --
>> Mitch Hill
>>
>> (Sent from HP DV6T)
>>
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> ------------------------------------
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> sound is worth a thousand pictures." R. Murray Schafer via Bernie
> Krause.
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