There are also "digital" hydraulic valves so you do not even need a DAC, just do the SPDIF serial/parallel conversion and control the different bits to different size "bit" valves directly :-).
amp to drive those. No, won't work, steam doesn't have much frequency respo nse. Maybe use the generators of a nuke plant in amplidyne mode. You'd need to make some custom ones to cover the higher frequencies if this is for au dio - I hope it's not.
hydraulics are just control & gearing, but it's a way to use a cheap high p ower drive, the compressor.
Sounds great to people with no other opportunities. Not stuck in an office all day, saying yes sir yes sir for a bit above minimum wage. Most buy into the money wasted on superficial junk thing. I prefer to do something usefu l.
NT
Got it! Finally a commercially viable solution. Take a pocket radio & relab el it 100MW PMPO. If you rearrange all the atoms in the 9v battery & power capacitor, lob it into the temperature of the sun & you should get that 100 MW. So it's a justifiable claim. Better glue a small valve into a convenien t gap somewhere. Or just find a radio that's tube shaped.
NT
snipped-for-privacy@downunder.com wrote in news:sm9pudt7fngb5efg63pmtl0ldnpr8krn0b@
4ax.com:
That "MANUAL program" was for calculating artillery trajectories.
The fraction of people with enough musical talent to be stars is in the parts-per-million.
What's the SPL where air goes nonlinear, where the negative peaks hit vacuum? That 100 megawatts wouldn't work on any rock-concert soundstage.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
John Larkin wrote in news: snipped-for-privacy@4ax.com:
The word for today is "slew rate". And building a mechanical transducer to reproduce sound with these pressure levels is immpossible with our current material science.
Air goes nonlinear way before you get there. Sound is basically adiabatic, so near the positive pressure peaks the air is hotter and the speed of sound correspondingly faster. Thus the positive peaks get steeper and steeper as the wave propagates. Doesn't take long to build up shock waves, or very nearly.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
s.
ve amp to drive those. No, won't work, steam doesn't have much frequency re sponse. Maybe use the generators of a nuke plant in amplidyne mode. You'd n eed to make some custom ones to cover the higher frequencies if this is for audio - I hope it's not.
h power drive, the compressor.
ce all day, saying yes sir yes sir for a bit above minimum wage. Most buy i nto the money wasted on superficial junk thing. I prefer to do something us eful.
1ppm is 300 people per America, 65 per UK. Certainly there's a huge mismatc h between demand & self-assessed supply. For those that want it it's a drea m.where 'work' includes the audience surviving, no, regardless of anything el se. P_diss alone would cook them before the band started playing.
NT
Sounds like a shock line, NLTL. Fast samplers use them.
Superheated shock waves would impress the crowd at the concert.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
The OP can maybe live with peak music power, or Chinese watts, which is easier to manage on PC boards.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Same idea, yeah.
The first one would blow out their ear drums, at which point they'd have other things on their minds besides music, like whether it would also homogenize their internal organs.
The kids dancing in front of the speaker stacks would have a poor prognosis.
Cheers
Phil Hobbs
(Who used to stand down in the mosh pits of prog rock concerts in the mid-70s wearing ear plugs and taking photos. He still has several hundred slides to prove it, not that he wants to.) :)
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
At about 180 dB, the positive peaks are at 2 bar and negative at 0 bar..
Some speakers claim 100 dB/W sensitivity at 1 m, thus 100 MW would be
80 dB higher so 180 dB would be possible, but since multiple speakers would be needed, how would you measure the pressure at 1 m from _all_ , so not practical due to the geometry.
Correction: It is 194 dB
Thus 100 MW is not quite enough.
You'd need military grade ear-defenders for this band:
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I used to work for a company that made the headphones football coaches wear on the sidelines. To make sure the devices worked, we needed ambient noise measurements where the devices were to be used. The ambient noise on the sidelines of an Auburn/Alabama game exceeded
120dB, which can cause instant hearing loss. We also sold equipment to train the players to function in that environment.
An old prof told of working on a WWII airborne PA system to warn civilians about a pending attack. They ended up with a compressed air driven horn modulated with a slotted plate for a valve, modulated.
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here mechanical sirens were in use until 1993 and to make sure they worked they were tested every Wednesday at noon, now they are electronic and only tested with sound once a year
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