Andy, what do you think of IMAX and I think the 12 channel audio system that is part of that now? (I'm here in the UK). I hardly ever go to the cinema, I mean I went this week for the first time in like 10yrs or more and it was the first time I've experienced an IMAX film: it was Predator Badlands. The actual film was pretty darn good for a Predator film with some quite good characters albeit some cliche happy family moments, but generally really good visual effects and an effective and engaging story line. But the audio, that's why I'm posting here, we sat in the middle in the most expensive seats so the middle of the whole seating area where I guess they calibrate the sound to. The good was that the bass impact rumble and chest impact was phenomenal! But my overall impression of the speakers were that they were very harsh, they didn't feel smooth. Sword strikes were painful to my ears virtually and clarity wise it felt like perhaps the speakers were at the limits or some distortion somewhere perhaps (or just some stupid peaks in the frequency response). One thing I was certain of at the time was that there wasn't enough dynamic range in the showing in the theatre - basically the normal vocals were too loud & the loud parts were even louder, albeit not feeling all that much louder apart from the bass which rollicked through properly. What they should have done was have the normal talking vocals at a reasonable "normal" level and then the loud impacts and effects should have scaled vs that to very loud for short'ish periods of time - instead it felt like the movie was dynamically compressed too much - either that was at recording stage & just how the film is, or the theatre itself set up some dynamic compression. I felt the constant loud level even during normal talking quite tiresome and I would have traded normal levels for perhaps even louder maximum effects during crazy scenes, albeit I'd probably say I'd keep the loudest sections as they were & just pined for some quiet sections during normal talking! I can't say I found the surround effects astounding, but maybe I was too assaulted by the general noise and the fact that massive screen is very immersive so maybe the sound takes a bit of a back seat. I came back home & about 5hrs later watched a movie on my simple JBL 308p and SVS 1000 Pro subwoofer 2.1 channel setup and the smoothness of the audio astounded me vs the sound from cinema - but surely I had nowhere near the bass impact but to be honest I was listening at dramatically lower listening levels and by a massive amount I suspect! Overall take from the IMAX movie was that I was disappointed by the sound system & sound experience bar the massive explosive impact of the bass!
EDIT: we saw it on first day release of the film & I think first showing of the day. First fight scenes & then subsequent talking scenes were quite painful to the ears & I was shaking my head literally quite a few times through it - about 2mins later I felt something changed in the audio and the quiet scenes were a tad quieter, so I don't know if they tweaked the calibration in the first 5mins of the film being shown, ie the theatre sound techs changing something.
EDIT#2: I didn't have noticeable hearing loss immediately after leaving the theatre, stuff felt normal, but I don't think it did my ears any good.
one i hate imax corp ( for movies they should have stuck with 40 min short ones ) not a fan they destroyed ruined the empire leicester square 2013 ,
i got have mmy eyes later imax [ cough ] i mean liemax or it looks like w/s ratio to me
i personally think the imax sound system for that size screen is rubbish , did it have a honky dialog or did it ( what site was it at , what seat number ) did it seem like room was fully absorbed treated ? no excuse for dub stages or even george lucas stag theatre has mild honky sound when seeing those videos interviews a microphone is always going to pick it up , you don't need a demo movie scene , just normal talking with a recording will suffice ( i don't have it my room otherwise dialog is gonna have a honky sound )
i'd say the mix levels for the size of the screen playback and the small speakers for the size of that screen , otherwise this is ASR , you should have done landscape/video ( don't be shy ) i have a few and i can hear that mild honky dialog due to auditorium not being proper treated ( any echo is added in on a film mix for effects use to create the illusion )
predators sounds like that bad experience with dune 2 at odeon bh2 screen 9 , dolby 7.1 , JBL speakers but just deafeningly too dB unsafe i had to wear earplugs it sounded way over 85dBA , ( i used to take my spl dB meter to cinemas years ago )
maybe find somewhere where they sell swords and get a demo and video it and listen to see if hurt your ears ? i would say yes , just take a common house brick though it at a window , it be well over 90dBA and for brief few seconds it will buzz your ears
i think the bass cabs behind these large screens isn't putting out enough bass level that can be ( movie be customised for playback with a larger MF HF arrays so they can be set at comfortable levels )
one we all know dB levels are going to lower get fainter the further away you are at back of an auditorium as well as stereo width gets narrower ( expect for the surrounds )
you don't have any ringing tinnitus inner ear noise do you ?
i would take earplugs next if you can be even asked to , movies are so cliche soundmixers/director now i can often tell when its gonna have a deafening scene , psychoacoustics in movies now is often atmos dreadful
bass isn't gonna put you in the middle of the experience not with the outdated typical ( not imax they don't use .1 they suck the bass out of the rest of the speakers dump it into a sub bass array ) LFE in other sound formats is outdated for the 1977 , its had tiny increase in range and lower extension since 1990's CDS failed SR-D takes over the committee decides and frequency not much changed , more channels now but not perfect , otherwise i could look at mine and bend those outdated dolby smpte mixer standards which is , outdated behind the times , i know how sound works , stand further away it sounds like a wide sound field , get close to it ' huh , sounds like a loudspeaker to me anything but atmosphere effects
you get involved with a loud scene that you see in a movie and can compare to real life , the real thing depends on what it is ( you'll get the idea ? )
a scene in mission impossible reckoning , cave scene car chase and car turns over rolls few seconds ( camera is maybe 20 feet back ) sound effect lol a bit silly and so inaccurate with LFE boom i feel it ? no maybe a decay reverberation in the cave but not physically it's not possible since i'mm not coupled with the vehicle
i get tired of filmmixers directors now with their atmos all this atmos and no discrete below surround ( i have to generate it matrix below surround )
reminds me , i don't have to but i give that mission impossible other reckoning a listen as it just arrived , i don't mind watching them backwards or even jumping to end of the movie for spoiling or the train scene , wonder how much below matrix surround it can produce ?
remember take video next time and earplugs , unless the cinema had 100 completes i doubt they'll turn the fader down or spend/make time to adjust some EQ levels to reduce harshness which is all it takes