At 1:42 PM +1000 5/29/10, Paul Jacobson wrote:
>
>
>On 29/05/2010, at 11:31 AM, Rob Danielson wrote:
>> Hi Paul--
>> Paul did other takes with the 3032's->DR-680 he could look at for
>> recurrence. Are you getting it to show in a sonogram we can send
>> him? If not, I guess we'll have to see if "tinkling" in the DR680 or
>> in combination with the 3032 shows up again. Rob D.
>
>Hi Rob,
>
>I've had a mess around and after bandpassing +10Khz I've been able
>to get a clear sonogram of the noise. There is a rapid ticking noise
>occurring 20 times per second. The broadband nature of the noise
>might indicate a source originating in the test environment. This
>ticking isn't apparent in the HDP2 portion of the test as can be
>seen from the sonogram.
>
><http://demo.mactrix.com.au/dr680/Bandpass_DR680.wav>http://demo.mactrix.com.au/dr680/Bandpass_DR680.wav
>
><http://demo.mactrix.com.au/dr680/DR680-HDP2_transition.png>http://demo.mactrix.com.au/dr680/DR680-HDP2_transition.png
>
><http://demo.mactrix.com.au/dr680/DR680_3032_flicker-noise.png>http://demo.mactrix.com.au/dr680/DR680_3032_flicker-noise.png
>
>cheers
>Paul
Hi Paul--
>11K and 20 beats/second seems distinct enough for audio engineers to
>recognize. I found one other file combining the DR680 and a 3032
>that appears to be recorded at another time. Its the one labeled
>"Boundary Array." The other file in the folder is the same
>3203->DR680 clip that you found the noise in.
>http://tinyurl.com/2w4dqoj [2mb download] Rob D.
= = =
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