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Optimize Your Sound System Setup With Pro Tips
- 4. What can be changed? Placement Architecture System Alignment
- 6. Big Ideas Coverage Patterns Interactions
- 10. Inverse Square Law Every doubling in distance from an audio source will decrease the SPL level by 6db.
- 11. Inverse Square Law 100db 94db 88db 20ft 40ft 80ft
- 12. Inverse Square Law 94db 30ft 100db 60ft
- 13. Coverage Patterns Speaker Speaker
- 14. Vertical Coverage 100db 94db 88db -3db 97db -6db 82db -9db 91db -6db 88db 30’ 60’ 120’
- 22. Q&A
Editor's Notes
- Science behind sound Tips to encourage you to take a look at what can be done to your sound system or room to make the mixing experience better.
- Placement: 2 Components Get us closer to uniform coverage & help the experience for the listeners Gain before feedback Minimize Interactions Architecture: Acoustics! Eliminating reflective surfaces Reverberation Bad Acoustics = More Careful Selected Speakers or Specialized Solution Good Acoustics = Bring out the best in good speakers System Alignment: Making the sound system working together with the room - Gain Structure - Verify Correct Polarity +’s = +’s, - = -’s - EQing the Sound System - Timing (Delay Speakers / Front Fills)
- Audience: Want to make it so that audience can fully connect with whomever is on stage without becoming fatigued or frustrated by audio issues. Removing Barrier of Bad Sound as an artist to create a positive audio experience Time, Money Eliminate Hot Spots, Dead Spots, Reflections Technical Artist: Audio engineers are artists! By providing them (you, volunteers) with a pleasant mixing environment, they can mix better and enjoy themselves. Creating a Blank Canvas for the Artist to Paint on Performers & Presenters: Essentially any individual on stage Allow them to feel that they are being heard, connecting with audience, enjoying their experience, that their effort in preparing is worth it ELIMINATE DISTRACTIONS Image Distortion
- Interactions are the least understood and the biggest culprit of in uniformity problems. Interactions – 2 audio waves intersecting with each other Cause Hot Spots, Dead Spots Walk around the room while listening to pink noise, listen. Measuring is possible, but listening will tell you
- Are there any audio interactions if there is only 1 speaker? Multiple arrivals = interactions (timing of arrivals)
- The pattern at which audio comes out of a speaker. Coverage Patterns differ how? Long throw vs. Short throw – what does that mean?
- When no interactions are present!
- Underbelly of speaker coverage skimming heads On axis to last row Front out of pattern -9 db 91, 88, 88 – Skimming Inverse square law and ediges of the pattern work together to give you uniformity. Pay attention to architechure of back wall – more energy.
- Center Front – Poor Coverage Center Back – Interactions 90deg example
- Spokes on the Wheel 60deg Coverage example
- Spokes on the Wheel 60deg Coverage example
- Don’t hack away at EQ because of Room Resonances! Deal with architecture issues by addressing the problem where it exists (acoustical treatment, etc.) not your EQ.
- There are lots of big and little things that can be done to a sound system that if thought about can make a difference, as opposed to just walking into the sound booth and saying 'that's the way it is.'
- There are lots of big and little things that can be done to a sound system that if thought about can make a difference, as opposed to just walking into the sound booth and saying 'that's the way it is.'