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Allison effect | The-audio-expert
https://the-audio-expert.freeforums.net/thread/559/allison-effect
This so-called 'Allison Effect' might've been news in 1965 but it's just basic acoustics knowledge now. In fact, pasim, this boundary-caused increase in bass is exactly what you're experiencing when you put your speakers on the floor. Last Edit: Feb 22, 2019 at 11:56am by Hexspa. One way to set up a room. Deleted.
Allison Effect - layman - Speaker Asylum
https://www.audioasylum.com/messages/speakers/294574/allison-effect
The Allison Effect is a power-response effect and will influence the sound no matter where in the room you sit. If boundaries are far enough away, the suckout moves downward in frequency and begins to affect the lower bass range. A large boundary 3 feet away from a speaker will cause a power response dip at 113 Hz everywhere in the room.
Baffle Wall, Allison Effect, Baffle Step, and Half Space ...
https://www.avsforum.com/threads/baffle-wall-allison-effect-baffle-step-and-half-space-radiation-discussion-calling-acoustic-experts.1456484/
I've read some of John Murphys writeups based on Harry Olson's work. From their formula it seems a 4'X4' piece of 3/4" plywood "baffle" should reflect the frequencies above 95Hz, with 95Hz actually being the -3db point. F3 = 380/W W= Width of baffle in feet. F3= -3db point
Why build towers? - Techtalk Speaker Building, Audio ...
https://techtalk.parts-express.com/forum/tech-talk-forum/1478398-why-build-towers/page2
Explain how you eliminate Allison Effect and low frequency boundary cancellations with floor standers. I find the mid-bass region to be extremely lacking on most if not all sub / sat combinations I have heard I guess you haven't heard a good one. www.billfitzmaurice.com www.billfitzmaurice.info/forum PWR RYD Seasoned Veteran Join …
Room Correction: Benefits and Pitfalls - JansZen Audio
https://janszenaudio.com/blogs/issues-in-audio/room-correction
As a matter of definition, rooms correction comprises an automated equalizer that listens to the sound at a certain spot or range of spots in a room, and makes adjustments to the speakers’ frequency response.These adjustments mask the room’s frequency response problems for listeners that keep their heads where the microphone (s) had been placed.
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