| Forum: Bruno Putzeys |
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| Topic: EQ or Crossover what is the difference? |
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 EQ or Crossover what is the difference? [message #396136] |
Thu, 08 January 2009 05:43 |
 Boy Griffioen
Messages: 7
Registered: August 2008
Location: Weesp (NL) |
Member |
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Hi all, and best wishes for 2009!
I'm playing with the idea of building a loudspeaker myself. And to experiment with different crossover idea's i think it is easy to use digital plugin eq's and delays because i have them available. Are there differences between crossover filters and eq filters?
If so could anyone point me in the direction of some info on this topic?
Do you have a suggestion for an eq plugin that would work better than others?
Thank you in advance
Kind regards
Boy Griffioen
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| Topic: Help please! Word clock solution... |
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| Re: Help please! Word clock solution... [message #396138 is a reply to message #387747 ] |
Thu, 08 January 2009 05:50 |
Boy Griffioen
Messages: 7
Registered: August 2008
Location: Weesp (NL) |
Member |
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I don't know the spec of either device but if you could run a spdif or aes cable alongside of adat it could improve the situation. The aes cable is used just for clocking.
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| Forum: Acoustics in Motion |
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| Topic: RFZ shaped control room.. |
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| Re: RFZ shaped control room.. [message #396139 is a reply to message #396104 ] |
Thu, 08 January 2009 05:52 |
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 Thomas Jouanjean
Messages: 55
Registered: August 2008
Location: Brussels, Belgium. |
Member |
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When building a shaped control room, ratios that apply to rectangular rooms don't necessarily apply anymore - depending on the kind of shape. For cockpit / non-environmental / FTB rooms, they don't matter much at all anymore. Of course, your room still needs to have proper dimensions, but for other concerns than purely modal behaviour.
If you decide to build such a room, don't forget to leave a lot of space for the treatment on/of side walls and ceiling and think about the fact that LF surfacic behaviours is amplified in shaped rooms. Beware of treatment near and behind your backwall diffusors. You have to manage the LF energy that will go through them and avoid having re-emission and resonances there (which happens everytime and has to be adressed!).
Also it gets real complicated to calculate pressure points in shaped rooms, but take the time to do it right and pay close attention to all that during build.
But IMVHO, unless you know exactly what you're doing, I wouldn't put my fingers into room shaping - leave this to a designer, as it's so very easy to miss it.
Keep us posted!
Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
Pro Audio Partners:
Joystick Audio
FOCAL Professional Speakers
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| Topic: Do Poly's Need to be sealed? |
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| Re: Do Poly's Need to be sealed? [message #396141 is a reply to message #396064 ] |
Thu, 08 January 2009 06:11 |
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Thomas Jouanjean
Messages: 55
Registered: August 2008
Location: Brussels, Belgium. |
Member |
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| djwaudio wrote on Wed, 07 January 2009 17:41 |
I'm reading Everest and am considering using a Poly, but the surface I want to join to is not smooth. So sealing the sides with bulkheads isn't an option. By not sealing the sides, does this make it a basic membrane absorber with a curve?
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If closed, the cylinder will resonate at it's nominal frequency + membrane (wood) frequency, and you will have heavy re-emission at those frequencies. Although, curved wood doesn't behave like a flat wood panel - as there are specific tensions in the material. So wood re-emission freq will be hard to tell, and also vary with how the wood is maintained in an arc form.
If your cylinder is not air tight, it will behave like a tuned Helmholtz resonator, so you can tune it - but practical effective/optimum tuning can only happen on a rather short bandwidth and is linked to the size of the cylinder and size of the "port".
| djwaudio wrote on Wed, 07 January 2009 17:41 |
What are the absorptive differences if so? I'm hoping to deal with some 70Hz null that speaker placement hasn't been able to address in an open floor-plan home.
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The difference is that one will be fixed and decided by the M³ of your cavity and type of wood used (and you will have 2x re-emission pbs). The other will have less re-emission pbs and can be tuned to a certain extent to meet your 70Hz criteria.
To have it sharp on 70Hz in real life is easier said than done though. So design and tune it with a wide Q.
You can calculate all that with the Helmholtz equation and derivated ones - you'll find it all on the net easy.
What kind of treatment do you have in the room already?
Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
Pro Audio Partners:
Joystick Audio
FOCAL Professional Speakers
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| Topic: Infrared Heating |
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| Re: Infrared Heating [message #396142 is a reply to message #394793 ] |
Thu, 08 January 2009 06:16 |
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Thomas Jouanjean
Messages: 55
Registered: August 2008
Location: Brussels, Belgium. |
Member |
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| ziggy wrote on Fri, 02 January 2009 05:26 |
greetings
does anyone have experience with infrared heating systems in a studio? we would like to install one of those in our live-room. it basically heats up the things in the room like furniture, people and the instruments and not the air itself.
would this pose a threat to pianos, mics and guitars?
thank you!
luc
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It's a good system, I had an interest in that for a while as well.
But I'd be worried about instruments tuning etc. Can't be good that they heat up/cool down/heat up/... - especially during sessions.
So good, but not for studios...
Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
Pro Audio Partners:
Joystick Audio
FOCAL Professional Speakers
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| Forum: Brad Blackwood |
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| Topic: New Analog EQ |
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| Re: New Analog EQ [message #396151 is a reply to message #394550 ] |
Thu, 08 January 2009 07:35 |
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Matt_G
Messages: 479
Registered: July 2004
Location: Brisbane Australia |
Active Member |
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| Silvertone wrote on Thu, 01 January 2009 06:14 |
Hi Matt,
I'm suppose to get a mastering version in for evaluation and to do a review on it as well (soon I hope). I'm really looking forward to trying this puppy out.
Health, happiness and prosperity in the new year.
best,
Larry
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Thanks Larry, looking forward to your review & if you think it's in the same league as the 432 & 9500 or whether it offers anything new to the table.
Matt
Matthew Gray Mastering
Brisbane Australia
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| Topic: Things I have learned |
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| Re: Things I have learned [message #396145 is a reply to message #395628 ] |
Thu, 08 January 2009 06:47 |
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Silvertone
Messages: 588
Registered: March 2007
Location: Saratoga Springs, NY |
Gold Member |
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Laugh often.
Laugh at yourself.
A mans body starts to decay after 37.4 years of age and a woman's body after 36.7... now that just hurts doesn't it?
Larry DeVivo
Silvertone Mastering, Inc.
PO Box 4582
Saratoga Springs, NY 12866
www.silvertonemastering.com
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| Re: Things I have learned [message #396166 is a reply to message #396145 ] |
Thu, 08 January 2009 08:31 |
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tom eaton
Messages: 2680
Registered: May 2004
Location: Newburyport, MA |
Platinum Member |
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| Silvertone wrote on Thu, 08 January 2009 07:47 |
A mans body starts to decay after 37.4 years of age and a woman's body after 36.7... now that just hurts doesn't it?
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I was 37.5 on Christmas Eve. Thanks a bunch.
thomas eaton recording
acoustic music guy
http://www.thomaseaton.com
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| Topic: Samplitude/Sequoia for mastering |
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| Re: Samplitude/Sequoia for mastering [message #396129 is a reply to message #396083 ] |
Thu, 08 January 2009 02:38 |
BW102
Messages: 8
Registered: April 2008
Location: The Netherlands |
Member |
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| ggidluck wrote on Wed, 07 January 2009 19:16 |
Hello,
I don't think Samplitude addresses the wordclock synchronization. This is handled by the driver. Usually there is a checkbox in the software that comes with your soundcard.
For example, here is the Hammerfall dialog that comes up when I click on the applet in the system tray. Note the checkbox for word clock there.
http://live2496.com/jpeg/hammerfall.jpg
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I think that could be it. Selecting ASIO driver and then EXTERNAL for source doesn't work, since EXTERNAL is not one of the options. It is either 'internal' or 'settings'. So these probably are the settings of my hammerfall cards.
I am going to do some testing with this...
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| Re: Samplitude/Sequoia for mastering [message #396194 is a reply to message #396129 ] |
Thu, 08 January 2009 09:56 |
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imdrecordings
Messages: 112
Registered: September 2007
Location: Salt Lake City |
Active Member |
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| BW102 wrote on Thu, 08 January 2009 02:38 |
| ggidluck wrote on Wed, 07 January 2009 19:16 |
Hello,
I don't think Samplitude addresses the wordclock synchronization. This is handled by the driver. Usually there is a checkbox in the software that comes with your soundcard.
For example, here is the Hammerfall dialog that comes up when I click on the applet in the system tray. Note the checkbox for word clock there.
http://live2496.com/jpeg/hammerfall.jpg
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I think that could be it. Selecting ASIO driver and then EXTERNAL for source doesn't work, since EXTERNAL is not one of the options. It is either 'internal' or 'settings'. So these probably are the settings of my hammerfall cards.
I am going to do some testing with this...
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Check "External" in the RME config. menu and designate the source to WordClock.
That should do it.
-Scott S
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| Re: Samplitude/Sequoia for mastering [message #396195 is a reply to message #396194 ] |
Thu, 08 January 2009 10:01 |
BW102
Messages: 8
Registered: April 2008
Location: The Netherlands |
Member |
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| imdrecordings wrote on Thu, 08 January 2009 09:56 |
Check "External" in the RME config. menu and designate the source to WordClock.
That should do it.
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Indeed it does 
I've been testing the system this way and everything seems to work just fine...
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| Topic: Local Craigs Lists Ads |
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| Re: Local Craigs Lists Ads [message #396150 is a reply to message #395888 ] |
Thu, 08 January 2009 07:34 |
T. Mueller
Messages: 205
Registered: February 2008
Location: Kansas City, MO |
Active Member |
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| Quote: |
What is mastering worth to you? Want to light one up and smack some bitches? We reserve the right to reject work that brings the community down. SERIOUS ARTISTS ONLY. If your mix isn't ready for mastering, we'll let you know what needs adjusted.
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Seems like they're at least not accepting potentially morally questionable music. Maybe there's some nobility in that.
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| Re: Local Craigs Lists Ads [message #396155 is a reply to message #395893 ] |
Thu, 08 January 2009 07:53 |
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Jessica A. Engle
Messages: 669
Registered: February 2007
Location: nebulous at best |
Gold Member |
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| Waltz Mastering wrote on Wed, 07 January 2009 07:35 |
You don't go to McDonalds for Steak.
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If McDonalds served steak, I am sure people would go to McDonalds for steak.
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| Re: Local Craigs Lists Ads [message #396200 is a reply to message #396187 ] |
Thu, 08 January 2009 10:17 |
T. Mueller
Messages: 205
Registered: February 2008
Location: Kansas City, MO |
Active Member |
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B1s are primarily used for spy activities now...
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