Become a Site Supporter and Never see Ads again!

Author Topic: Matrix Mix forumla  (Read 2376 times)

0 Members and 1 Guest are viewing this topic.

smokenburn

  • Guest
  • (0)
Matrix Mix forumla
« on: October 21, 2016, 02:25:55 AM »
I'm looking for a thread with the distance/time ratio for mixing a matrix recording.   What is the formula, or link to the thread?

Thanks!

smokenburn

  • Guest
  • (0)
Re: Matrix Mix forumla
« Reply #1 on: October 21, 2016, 05:27:40 AM »
Time = Distance/Speed of sound (1,126 ft/s)

Offline Gutbucket

  • record > listen > revise technique
  • (15)
  • Needs to get out more...
  • *****
  • Posts: 14299
  • Gender: Male
  • Gunther Theile nailed it!
Re: Matrix Mix forumla
« Reply #2 on: October 21, 2016, 12:47:22 PM »
Or, with respect to our purposes, it takes 1.1 milliseconds (0.0011 seconds) for sound to travel 1 foot.
musical volition > vibrations > voltages > numeric values > voltages > vibrations> virtual teleportation time-machine experience
Better recording made easy - >>Improved PAS table<< | Made excellent- >>click here to download the Oddball Microphone Technique illustrated PDF booklet<< (note: This is a 1st draft, now several years old and in need of revision!  Stay tuned)

smokenburn

  • Guest
  • (0)
Re: Matrix Mix forumla
« Reply #3 on: October 21, 2016, 02:07:17 PM »
sample:

4 ch matrix mix: stereo pair is located 30 ft. f/ the PA and SBD mix.

30 (distance)/1126 (speed of sound) = 26 ms (time)

add 26 ms sample delay to the sbd mix.
« Last Edit: October 21, 2016, 02:15:40 PM by smokenburn »

Offline goodcooker

  • (39)
  • Needs to get out more...
  • *****
  • Posts: 3610
  • Gender: Male
  • goes to 11
Re: Matrix Mix forumla
« Reply #4 on: October 21, 2016, 02:24:56 PM »
sample:

4 ch matrix mix: stereo pair is located 30 ft. f/ the PA and SBD mix.

30 (distance)/1126 (speed of sound) = 26 ms (time)

add 26 ms sample delay to the sbd mix.

This is accurate. Use your ears to fine tune a few ms either way. I use the sound of the bass to find the sweet spot where there is no comb filtering.
MBHO KA300 || Joly Mod Oktava MK012 || NakCM300 || ADK A51 > Sound Devices 442 || Reference Audio Designs MS2 > Tascam DR701 || Marantz PMD620 || Tascam DR680
Transfers - Tascam DA30 or Fostex D5 (dats) or Nak MR2 (cassettes) > Sound Devices USB Pre

http://www.archive.org/bookmarks/goodcooker

"Are you the Zman?" - fan at Panic 10-08-10 Kansas City
"I don't know who left this perfectly good inflatable wook doll here, but if I'm blowing her up, I'm keeping her." -  hoppedup

Offline danlynch

  • (16)
  • Needs to get out more...
  • *****
  • Posts: 3468
  • Gender: Male
    • nyctaper
Re: Matrix Mix forumla
« Reply #5 on: October 21, 2016, 03:11:17 PM »

This is the general rule.  Some PA systems incorporate delay.  Always check the difference by comparing the precise location of a identifiable point (drum clicks are good).
Founder and Host of NYCTaper:  http://www.nyctaper.com

Microphones:  Schoeps CCM4Us, Sennheiser MKH-8040s, Neumann KM-150s, Neumann TLM-102s, DPA 4061s
Recorders:  Sound Devices 744t, Edirol R-44 (Oade Concert Mod), Edirol R-05
Pre-Amps, D/A's:  Apogee Mini-Me

My Recordings on Archive.org: http://www.archive.org/bookmarks/danlynch

Offline morst

  • Trade Unionist
  • (2)
  • Needs to get out more...
  • *****
  • Posts: 4711
Re: Matrix Mix forumla
« Reply #6 on: October 24, 2016, 03:35:20 AM »
I'm looking for a thread with the distance/time ratio for mixing a matrix recording.   What is the formula, or link to the thread?

Thanks!

If you have a mac machine, try this widget, called Sound Reference:
https://www.apple.com/downloads/dashboard/calculate_convert/soundreference.html

It lets you calculate wavelength or time based on your choice of ambient temperature. That and a calculator (widget!) to figure how much 1/48,000 of a meter comes out to, and you can nail stuff pretty well!!!

This is the general rule.  Some PA systems incorporate delay. Always check the difference by comparing the precise location of a identifiable point (drum clicks are good).
Break music over the PA can be very helpful as well. If you have it on a clean SBD feed, then call a spot in it ZERO, and then align your audience mic sources to it...

 

RSS | Mobile
Page created in 0.039 seconds with 31 queries.
© 2002-2021 Taperssection.com
Powered by SMF