HD10 Audio Test

Heath McKnight · March 9th, 2004, 04:32 PM

I was watching a small doc my friend shot in DV mode on the HD10. It's about my film for my DVD. Anyway, I walked around with a wireless unit, doing my interview at a putt putt course (don't ask).

I noticed the audio, when I was next to a fake waterfall, was acting weird. As I talked, the waterfall volume dropped, but as soon as a I shut up, even for a second, the waterfall volume increased, then dropped again when I started talking.

Hmm...

heath

Les Dit · March 9th, 2004, 08:38 PM

Heath,
The effect you noticed is caused by the AGC ( auto gain control). When something close to the Mic is louder, it reduces the gain, making the BG go quieter. When the louder sound stops, the circuit ups the gain to raise the background ambient sound to a higher value.
-Les

Heath McKnight · March 9th, 2004, 09:58 PM

Ah yes...Yet another reason to use a DAT, etc.

hwm

Ed Hill · March 31st, 2004, 02:04 PM

Hi Guys,

I've been shooting the auditions for our Docudrama (which shoots next week.) We are using double system sound with the HD-10 and a small shotgun as back up audio into the HD 10.

The main audio is a Fostex MR-8 (about $ 300) from the Azden SGM-2X(about $ 220). The results are good. We slate each shot and its easy to marry the audio to the video using Vegas and CineForm.

The MR-8 is a digital 2 input channel device that records to Compact Flash cards (mixes up to 8 channels total.)

Since I got the Azden after reading a review on DVInfo, I guess I should write a review of the Fostex MR-8 after we're done producing this video.

Ed Hill

March 9th, 2004, 04:32 PM	#16
Heath McKnight MPS Digital Studios Join Date: Apr 2003 Location: Palm Beach County, Florida Posts: 8,531	I was watching a small doc my friend shot in DV mode on the HD10. It's about my film for my DVD. Anyway, I walked around with a wireless unit, doing my interview at a putt putt course (don't ask). I noticed the audio, when I was next to a fake waterfall, was acting weird. As I talked, the waterfall volume dropped, but as soon as a I shut up, even for a second, the waterfall volume increased, then dropped again when I started talking. Hmm... heath __________________ My Final Cut Pro X blog

March 9th, 2004, 09:58 PM	#18
Heath McKnight MPS Digital Studios Join Date: Apr 2003 Location: Palm Beach County, Florida Posts: 8,531	Ah yes...Yet another reason to use a DAT, etc. hwm __________________ My Final Cut Pro X blog

March 31st, 2004, 02:04 PM	#19
Ed Hill Regular Crew Join Date: Mar 2004 Location: Atlanta, GA, USA Posts: 104	Hi Guys, I've been shooting the auditions for our Docudrama (which shoots next week.) We are using double system sound with the HD-10 and a small shotgun as back up audio into the HD 10. The main audio is a Fostex MR-8 (about $ 300) from the Azden SGM-2X(about $ 220). The results are good. We slate each shot and its easy to marry the audio to the video using Vegas and CineForm. The MR-8 is a digital 2 input channel device that records to Compact Flash cards (mixes up to 8 channels total.) Since I got the Azden after reading a review on DVInfo, I guess I should write a review of the Fostex MR-8 after we're done producing this video. Ed Hill __________________ Ed Hill HighlyDef Productions, Atlanta, GA prblog.edhillpr.com Video and Online Advertising ed@highlydef.com

March 9th, 2004, 08:38 PM	#17
Les Dit Major Player Join Date: Oct 2003 Location: Southern Cal-ee-for-Ni-ya Posts: 608	Heath, The effect you noticed is caused by the AGC ( auto gain control). When something close to the Mic is louder, it reduces the gain, making the BG go quieter. When the louder sound stops, the circuit ups the gain to raise the background ambient sound to a higher value. -Les