Did Amir Change Your Mind About Anything?

Tuned resonators are a bad idea for any unskilled audiophiles to dabble in. They are very narrowband and their response can be screwed up easily in construction. Measurements to tease out the specific frequencies you need to deploy them can be difficult (due to multiple axis resonances can occur).

A single PEQ filter can solve the same problem and lower distortion of the speaker to boot.

Net, net: don’t do it.

 

You spoke to  me as if i was a child and not really there adressing a crowd  and as if i did not do it already with complete success... You are right on one point, it takes me one year of tuning non stop ... It was very fun but very complex... By the way it COST ME NOTHING.... I did it for two reasons :

it was the more fun experience ever in audio ... Upgrading pleasure related to a component dont even compared in fun and upgrading power..

You cannot KNOW IT by reading Toole by the way ,formula are only that : formulas in a book ....This is learned by DOING it...

You are right about a point though, it is so long to do and ask for so many listenings experiments to do it right that i did not recommend it save to someone who want to train his ears and learn dedicated  small room acoustic at all cost and retired because i cannot imagine doing it in the evening after works in a living room  😊..

it was really fun... Each day a new problem arise... Each day i was partially satisfied and frustrated, i searched the timbre problem and how to solve it...It was a slow incremental process like tuning a piano but on one year time ... 

There is also more to say as how to distribute the Hemholtz grid around the room to increase the speakers frequencies response on some band to compensate for the room , because the speakers had his frequencies response and the room too but i will not be able to describe that here...Anyway it is not useful save if someone want to experiment... No speakers is the same and no room either...  The main problem was creating a timbre experience right, the second was at the same time creating the right ratio relating sound sources positions and dimensions and the listener position , it is called ASW/LV... japanese acoustians research was inspiring and useful for me here...

The reason i did not like your attitude  now is because you never spoke to me really, you adressed the crowd reading the posts and you swim to keep your face clean, drowning the fish ... You had no good faith in this discussion ... It is my conclusion... or if you were of goode faith, you are completely ignorant out of your tools manual of use... I dont know.. Anybody reading my posts and your answers can figure it out for himself ...

 

 

amir_asr

531 posts

07-12-2023 at 04:36pm 

There is more to audio life than proving 1+1 = 2. You have that part down pat. Think harder problems.

Oh, I think of the hard problems.  I have purchased $100K speaker measurement system and put up with schlepping around these heavy boxes around to test them to solve that hard problem.  I also spent years educating myself on acoustic science.  I suggest you stop trivializing the topic and leading people to screw up the sound and look of their rooms.

That’s a hell of an investment. $100k on a measurement system as opposed to $100k on a system. Whatever boat you float….

My motto was : at peanuts costs...

😉

That’s a hell of an investment. $100k on a measurement system as opposed to $100k on a system. Whatever boat you float….

 

 

Cargo cult science is a pseudoscientific method of research that favors evidence that confirms an assumed hypothesis. In contrast with the scientific method, there is no vigorous effort to disprove or delimit the hypothesis.^[1] The term cargo cult science was first used by physicist Richard Feynman during his 1974 commencement address at the California Institute of Technology.^[1]

Cargo cults are religious practices that have appeared in many traditional tribal societies in the wake of interaction with technologically advanced cultures.

     Do a bit a research and you'll learn those primitives were limited in their understanding, of what they saw with their eyes, based on their prior experience, education and BIASES.

                                                A rewind:

                 It isn't that the Denyin'tologists are ignorant.

               It's they're knowing* so much, that's WRONG.

                       *heart of the Dunning-Kruger Effect

                                              OR, two:

     The Church of the Naysayer Doctrine (like every other faith-based, religious cult) has as many dopes as it does Popes.   

     Bring up anything resembling SCIENCE/PHYSICS, dated later than the 1800’s and they become apoplectic, not having the formal education to comprehend the concepts, or- possible ramifications.    THAT would be hilarious, were it not so pathetic!        

           Gimme That Old Time Religion, Gimme That Old Time Religion, etc.

        At the very first mention of something as simple as Wave Function (a BASIC tenet of Quantum Mechanics), the Cargo Cult will label you a KOOK.

        But remember: they can only view/understand you, based on their limited experience, education and BIASES.

         They have overlooked the fact that, if not for the hypotheses/theories and experimentation, regarding Quantum Mechanics: a plethora of modern conveniences, medical devices and the gear they so love, would not exist.

          Had scientists, chemists and inventors shared the doctrines of the Cargo Cult (Denyin'tologists), there would be no semiconductors, computer chips, LASERs, or Magnetic Resonance Imaging devices (MRIs).

                                         Solid State amps?

                                     OOPS (back to tubes)!

                                        Your Smart Phone?

                                        FA'GET ABOUT IT!

                                         Your car's GPS?

                                                NOPE!

    Then too: some may be willfully ignorant and just enjoy being contentious.

                        Others: obtuse, uneducated*, misinformed?

      *Typically, from what's been exhibited here: H.S. STEM, if that, would be a safe inference.

      Either way: the result, when the Cult begins it's rhetoric is a classic demo of the Dunning- Kruger Effect.

                                          But, I digress: 

       Bring up those pesky details, regarding the likes of QED, Dielectric Absorption, Poynting's theorem and possible application/effects, relative to frequency, that our musical signals are carried via photon or wave, outside the conductor and you're a KOOK?

         Again: the Cargo Cult can only understand anyone with an actual background, experience and education in Physics/QED, based on their beliefs, education, experience and biases

                                      Remember this?.

     One anecdote  that some may find interesting: their walks in the woods and how his father would encourage him to look beyond the fact that something in nature exists, but into why and how.

     It saddened him, that while attending college, during a visit home and one of their walks: his dad asked what he was learning in college.

     At that moment, he realized: if he tried to explain what he was learning, there was no way his dad could understand.                               

                            It wasn't an insult or condescension.

                                                Just reality.

                                    Oh well: let 'em go build a runway!

                                                    references:

https://en.wikipedia.org/wiki/Applications_of_quantum_mechanics#:~:text=Examples%20include%20lasers%2C%20electron%20microscopes,systems%2C%20computer%20and%20telecommunication%20devices.

https://www.forbes.com/sites/chadorzel/2015/08/13/what-has-quantum-mechanics-ever-done-for-us/?sh=37c459944046

https://uwaterloo.ca/institute-for-quantum-computing/quantum-101/quantum-applications-today

          But: I'm a kook, because I believe in the SCIENCE, from which all that sprang?

     https://www.smithsonianmag.com/science-nature/five-practical-uses-spooky-quantum-mechanics-180953494/

           Einstein got that last one wrong (Quantum Entanglement), BUT- I still wish he'd been alive, when the Hubble Telescope proved, what he considered his, "greatest blunder" (his inability to bring symmetry to his field equation, without lambda.

  https://www.aps.org/publications/apsnews/200507/history.cfm#:~:text=Einstein's%20original%20equations%20had%20been,how%20the%20universe%20will%20end.                                            How about that?

Another example of a hypothesis/theory, with no way to EXPERIMENT/MEASURE, what you're sure must be there, in some detectable way, or another.

                                               Just for fun:

https://www.scientificamerican.com/article/6-times-quantum-physics-blew-our-minds-in-2022/

                                            Happy listening!

it is comical if you realize there is top musicians here, designer engineers and others very informed people about all aspects of audio... 

What is even more comical is thinking any of those disciplines teach you anything about acoustic science.  My piano teacher doesn't know a tweeter from a woofer.  A design engineer is taught how to put electronic circuits together, not deal with psychoacoustics of sound in a room.  As to other "informed people," I don't know who they are and what their qualifications are if they are hiding behind aliases.