At 09:57 AM 10/25/2002, John Parks wrote:
>Hello again,
> Things are finally taking shape, I have built a homemade
>parabolic mic using a 21" Telinga Dish and a ECM T-145 mic. With this
>i am planning on using an MZ-R30 minidisc recorder which i purchased
>from E-bay. I wasn't to delighted when i received the MZ-R30, first
>problem I found was that the rechargable LIP-12(h) was dead as could
>be, then i found that the recorder would not charge the said battery,
>another option was to use regular AA battries, but i did not receive
>a battery case that would snap onto the sie of the recorder and none
>of this stuff could be purchased here in Canada.
I have an extra charger and an extra battery case for the MZ-R30 that will=
fit your unit, as long as you haven't retrofitted stuff to the case that
precludes using the right stuff.
>... First i was getting what sounded like
>feed back, I was thinking that this was because of where my recorder
>was only about 2 feet from my dish, so I added a ten foot extension
>to move further from the dish.
Real feedback is the mic picking up it's own signal from the earphones - if=
the mic can "hear" the output of the earphones you'll get feedback. Move
the earphones away from the mic or turn down your earphone volume to solve=
this problem.
>This has gotten rid of the feedback
>sound but now I am getting a different sound which is hard to
>explain, it is like hiss or low hum, i was calling it the sound of
>silence, I am not sure. I was recording in Mono/Manual Recording with
>my rec level nearly max, I was wondering if it has anything to do
>with my recording level, i read some where that between 5 and 6 was a
>good setting for this recorder. Could someone please tell me what
>would be a good level.
I'd set the gain about half-way up in manual record on an MZ-R30. The hiss=
you hear is probably either microphone "self noise" - the electronic noise=
of the mic itself or it is actually there in the environment. This self
noise is what nature recordists are always trying to minimize. You can
minimize it by: 1. turning down the record level 2. adding a pre-amp to the=
signal chain (not likely to give you much with this setup 3. Buy lower
noise mics ($$).
>One last small thing, what would be something
>that i could used to cover my Telinga dish for wind protection and
>what could i use for a small mic which i have (that is very very
>sensative) for wind protection, I have no time to order anything for
>these because I am heading out on my first recording trip tommorrow
>and will be gone for up to three weeks?
Any sonically transparent cloth will help keep the wind from hitting the
mic element - I assume you have some windscreen over the mic? Telinga
sells an excellent windscreen for the dish, when you get the time to order.
Good luck,
Doug
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Doug Von Gausig
Digitally Recorded Birds Sounds at:
http://naturesongs.com/birds.html
Clarkdale, Central Arizona, USA
34=B046.34N 112=B003.25W
e-mail:
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