Hi Vicki--
I was curious how the noise from each set-up would compare with the
playback levels matched so I made a movie: http://tinyurl.com/544flb
The movie compares only the "background ambience" taken from segments
in-between the loud calls so the noise component can be more evident.
The movie seems to confirm your assessments. The LS-10's mic pre
seems to be adding noise on top of the ME-67's self-noise, 10dB(A).
This is consistent with earlier estimates that the LS-10's mic pre
noise should be fairly inaudible with mics whose self-noise is about
14-16dB(A) or higher. Mics with less than 14dB(A) self-noise should
benefit from a quieter mic pre like those in the TCD-D10 or Fostex
FR2-LE
Its difficult to characterize the color of the noise from the LS-10's
built-in mics because the other tests use Low-Cut filtering in the
field.
Note that the two ME-67 tests are monaural; the built-in mics are
stereo. Rob D.
=3D =3D =3D =3D =3D =3D =3D
At 9:48 AM +1000 6/26/08, Vicki Powys wrote:
>Hi all,
>
>I have uploaded three mp3 files (all less than 1 MB) to the members
>files area. The subject is a Superb Lyrebird recorded in the forest
>at Mt. Airly in NSW. In each recording I was about 10-15 metres
>away, with little or no breeze. No filtering has been used, so that
>you can compare the raw result for three different recording
>combinations. With the LS-10, I recorded as WAV 44/16, and high
>sensitivity mode.
>
>1. LS-10, built in mics, low cut on, recording volume 5
>
>2. LS-10, Sennheiser ME67 mic, low cut on, recording volume 2
>
>3. Sony TCD D10 DAT with Sennheiser ME67 mic, recording volume about
>2-3.
>
>There is more system noise in (1) but the sound quality is still very
>good. I had the low cut switched on because of occasional breeze.
>The addition of the ME67 to the LS-10 in (2) was an improvement and
>there was less system noise, altho the quality of the sound would
>have been less thin with the low cut switched off. The DAT recording
>(3) has less system noise and the best sound quality.
>
>I might add that using the LS-10 with built in mics was a dream for
>stalking the elusive and shy lyrebirds! I could carry it in my
>pocket and had no tangle of leads and mics and monopods. The results
>are very acceptable for scientific study. I have had to make a
>better windshield for the inbuilt mics, but otherwise I am very
>pleased with the LS-10.
>
>Has anyone tried the LS-10 with lavalier mics e.g. WL183s?
>
>Vicki Powys
>Australia
>
>
--
"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause
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