View Full Version : Recording in dolby 5.1 surround


Vic Macky
June 18th, 2006, 02:05 AM
Is there a way to record audio in dolby surround 5.1 in Optura 60? Will it be external mic based or software based? it's not like im going to do a movie or something but i just want to know if there is a way just in case i thought of making a surround sound home video.

any comments or inputs will be greatly appreciated.

Giroud Francois
June 18th, 2006, 02:47 AM
nobody records in 5.1
usually, you choose to record as much signals you need to recreate a good 5.1 in studio.
one channel for background sound (but you can choose to record it in stereo)
2 channels for dialogues (i said 2 channels, not stereo, there is a difference)
the .1 channel is usually only bass surround created in studio.
the front left/right is usually made from the 2 channels for dialogues)
the center is usually a mix of dialogues.

Daniel Wang
June 18th, 2006, 01:05 PM
My audio guy has a Schoeps 5.1 setup, two figure8's and a hyper in the Schoeps special shockmount. It's a pain to boom that but it sounds great. Hard to explain but see below


^
______________ H ___________________
Figure8 y Figure8
___________>>_ p ____<<_____________
e
r

K. Forman
June 18th, 2006, 01:24 PM
nobody records in 5.1

According to the commercial, with the new Sony Handycam, you can record straight to DVD in surround, using their optional BluTooth enabled mic.

Yes, I watch too many commercials.

Steve House
June 18th, 2006, 02:33 PM
According to the commercial, with the new Sony Handycam, you can record straight to DVD in surround, using their optional BluTooth enabled mic.

Yes, I watch too many commercials.

I wonder what they're really doing with this. Checking the Sony website this is a mono omni wireless mic using Bluetooth instead of the usual radio frequencies. The site's blurb says ...

# Capture the sounds from a distance or in the middle of a crowd
# Records in true 5.1 channel centre sound with compatible Handycam camcorder models
# Line of sight working range of approximately 30 metres (100 feet) with Bluetooth® wireless connectivity

Kinda sounds like it might be providing the centre channel while the stereo mic on the camera provides the L&R. Kind of curious how they get the rear channels - perhaps synthesizing them from the stereo front?

Emre Safak
June 18th, 2006, 03:20 PM
Who cares? It's going to sound like ****. You can't get something for nothing.

Steve House
June 18th, 2006, 03:25 PM
Who cares? It's going to sound like ****. You can't get something for nothing.

Oh I agree with that and wouldn't touch it myself with an 11-foot pole (my patented Spinal Tap poking stick)! I'm just curious what techno-tricks they're doing to fool the consumer into thinking they're really getting 5.1 surround.

Jon Fairhurst
June 18th, 2006, 05:16 PM
Is there a way to record audio in dolby surround 5.1 in Optura 60? Will it be external mic based or software based? it's not like im going to do a movie or something but i just want to know if there is a way just in case i thought of making a surround sound home video. For a home video, just do it in software, like Vegas + DVD.

Record the dialog on the built-in camera mic. (You said it was a home video. I'll assume no boom poles or special equipment.) Mix the dialog to the center channel. Mix in music to the front L/R channels in stereo. Mix ambient noises (crickets, whatever) and sound effects to the rear channels and front L/Rs to taste. Don't worry about the subwoofer, unless you're doing big explosions and rumbles. The sub should get only the low frequencies with the other speakers getting the main explosion frequecies from the direction necesssary. Don't have dialog during the explosions, if at all possible.

This technique is simple and works well for the audience. The dialog is clear and comes from the actors. The "orchestra" is on stage in front of you, but is panned wide to keep from stepping on the dialogue. The ambient noise surrounds you. The big booms thump.

Have fun!

Vic Macky
June 19th, 2006, 01:33 AM
Thank you all for your replies. I thought about the possibility of recording dolby digital 5.1 on my optura 60 when i read on my bro-in-law's sony dvd camcorder (DCR-DVD92) that it records in dolby digital. I was wrong when i misinterpreted it as recording in 5.1 surround. I guess when I read dolby digital the first thing that came to my mind is 5.1 surround and probably because it uses DVD. stupid me.

I guess its harder attaining 5.1 by hardware since its a little tricky to set up while it probably may be easier doing it by software as Jon Fairhurst said. I'll probably abandon the idea for now since i'll be doing mostly family home videos.

Thanks though for all your replies.

Dave Largent
June 19th, 2006, 06:04 AM
Isn't there some model of consumser cam they've
been advertising on TV that is claimed to record in
surround sound?

Greg Bellotte
June 19th, 2006, 06:50 AM
I'm just curious what techno-tricks they're doing to fool the consumer into thinking they're really getting 5.1 surround.

Small L.E.D. that says "5.1" next to it. 90% of this country would then SWEAR it was surround... :-)

Steve House
June 19th, 2006, 10:36 AM
Small L.E.D. that says "5.1" next to it. 90% of this country would then SWEAR it was surround... :-)

I believe that! There's some really strange stuff out there passing for 5.1, even from people that should know better. Was watching one of the Detroit Hi-Def channels last night and a commercial ran where the music was in the front channels (but out of phase, comb filtering readily apparent) and the voice-over was sent to the rear channels fer cryin' out loud! My home theatre has been very carefully calibrated, video set up with smpte colour bars, audio setup with phasing checked, levels balanced with pink noise and a sound pressure meter, delay set properly for the room dimensions, etc, so when something like that happens I can be certain it's the broadcast station screwing up at their end.

A. J. deLange
June 19th, 2006, 04:54 PM
Check http://www.holophone.com/home.html

K. Forman
June 19th, 2006, 05:11 PM
AJ, the problem with that mic, would be the crew standing behind the camera getting picked up, as well as all the other unwanted ambient sounds.

Vic Macky
June 19th, 2006, 08:24 PM
I agree with keith i think recording 5.1 in actual video shoot will be more challenging since it may pick up alot of unwanted sounds especially from the crew behind the camera. In my view 5.1 recording will be achieved better during video editing/processing.

Jon Fairhurst
June 19th, 2006, 10:18 PM
From what I've seen the Holophone is a great solution for ambient sounds at live events. A couple of years ago they did surround at the Grammys and planned to use about a zillion mics spread throughout the audience. They ended up with phasing problems that were untenable. The Holophone came to the rescue. They used that for the crowd, and then mixed it with the various stage mics, and were very happy with the results and simplicity.

So, for sporting events, crowds and other venues where the ambience is important, the holophone would be a great tool - especially if it's a live or documentary production. For narrative work, however, one doesn't need to be concerned with "the truth". Just record the dialog in mono, mix in the soundtrack and ambience/foley from a sound effects library and be done with it!

Dave Largent
June 20th, 2006, 01:02 AM
My understanding of the Holophone is that it would
normally be used suspended from the ceiling or
placed on a very tall mic stand.

Dave Largent
June 20th, 2006, 03:51 AM
Anyone know which model consumer cam they are
advertising as capturing in 5.1?

K. Forman
June 20th, 2006, 05:45 AM
Dave- I don't remember which model, but it is one of Sony's ne handycams. The commercial where the little girl is an aardvark in the play, and Dad makes her the star with his 5.1 handycam.

Dave Largent
June 20th, 2006, 05:52 AM
Dave- I don't remember which model, but it is one of Sony's ne handycams. The commercial where the little girl is an aardvark in the play, and Dad makes her the star with his 5.1 handycam.

What's your undertstanding? Is there some
type of wireless mic used with this cam?

K. Forman
June 20th, 2006, 05:56 AM
I believe the way they said it on the commercial, "With the optional BluTooth enabled mic, you can capture stunning 5.1 surround sound...".


You ain't really goin to make me turn on the TV and watch it again, are ya?

Steve House
June 20th, 2006, 06:49 AM
What's your undertstanding? Is there some
type of wireless mic used with this cam?

There's a couple of mics listed for surround. The wireless Bluetooth is the "ECM-HW1 Wireless Microphone" and there's another on-camera mic listed to add rear channels "on compatible camcorders" is the "ECM-HQP1 Surround Sound Microphone."

Dave Largent
June 20th, 2006, 07:13 AM
There's a couple of mics listed for surround. The wireless Bluetooth is the "ECM-HW1 Wireless Microphone" and there's another on-camera mic listed to add rear channels "on compatible camcorders" is the "ECM-HQP1 Surround Sound Microphone."

Hey, maybe we're all missing out on the good stuff.

Steve House
June 20th, 2006, 10:05 AM
Hey, maybe we're all missing out on the good stuff.
LOL - I doubt it!!

Dave Largent
June 20th, 2006, 10:21 AM
You ain't really goin to make me turn on the TV and watch it again, are ya?

No, I've seen the commercial a few times but
never really paid it any attention. Next time
I will.