On Sun, 20 Apr 2003 04:01:13 GMT, Doug Mikkelson <INSERTMYLASTNAMEHERE@att.net> wrote:

 

>A lengthy sound question.

>

>After lurking here for awhile, I just purchased a Sony TRV-18 from

>Wolf.  I'm quite happy with the video we've produced so far.

>

>However, when playing our tapes today, I noticed a very faint, but

>annoying whirring noise on the playback audio.  It was so faint, that

>my wife did not notice it - but now that I've noticed it, it is

>driving me crazy!

>

>I sat down with the camera and determined that what I am hearing is

>the servo motor for the auto-focus.  I can hear it faintly from the

>front of the camera (where the built-in mic is).  When I turn on the

>manual focus mode, the noise stops immediately. 

>

>It surprises me that the camera is adjusting the focus so frequently.

>Even when mounted to a tripod, simply having our baby move her arm in

>the shot was enough to set off the auto-focus for a second.  When the

>baby wiggles and kicks, it is adjusting itself almost constantly.

>Typical???

 

Yes. If you use a WA (at WA...), though, you can often

leave the AF locked without focus loss, even with some

camera motion...

 

>One temporary solution will be for me to allow the camera to

>auto-focus, then change the setting to manual.  As long as I don't use

>the zoom or attempt to pan, etc. this should be fine.

 

Yes.

 

>However, for a long term solution, I would like to get a camera

>mounted mic. - preferably one that is compatible with the Sony hot

>shoe.  I am hoping that a separate mic would definitely *NOT* pick up

>this faint whir.  True? 

>Any and all recommendations appreciated.

 

The Sony 908c works well, and improves the stereo

omni-directional sound some over the camcorder's mic,

but it adds considerably to the size of the camera...

 

>I see in another thread, David Ruether has recommended  the Sennheiser

>MKE-300 "for cheaps".  B&H carries this one for $169.  Is this

>complete overkill for the TRV-18 and beginner family shots - or should

>I consider it a decent intro-level investment?

 

It is mono and directional (maybe OK?) and it is also

large compared with the camera (both the 908c and

MKE-300 are light, though, and both require plugging

a cord into the mic input (and remembering to turn

them on/off...). Sony makes a hot-shoe connecting

mic, but I have not tried it (see Sony mics at

www.bhphotovideo.com).

 

>Is the el-cheapo Sony ECM-HS1 Gun Zoom Mic ($55) even worth

>considering for this particular problem?  I don't want to cheap out

>and end up completely frustrated. 

 

It "zooms" with the lens, which would annoy me with

the shifting audio character - and at the "WA" end,

it is essentially the built-in camera mic, which is

mixed out progressively as the lens is zoomed in

favor of the HS1 mono shotgun mic (in other words,

there is no gain at the zoom WA - the sound will

be similar to what you have...).

 

>Regarding the two hours of film I've already shot - any suggestions on

>filtering out that noise in post-production on my PC? 

 

Cool Edit (www.syntrillium.com) works well for

steady noises, but would probably not work well

for this. I would try the 908c...

 

>Thanks all.  This forum has been extremely helpful!