sound effect

Discussion in 'The Projects Forum' started by shortbus, Mar 22, 2010.

  1. shortbus

    Thread Starter AAC Fanatic!

    Sep 30, 2009
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    Does anyone know of a simple circuit that will make a sound like a "machine gun" firing? Basically a "BANG" at around 10hz.

    I collect antique toys, and found a machine gun that was used in a carnival. Well most of it. The gun body, swivel mount(that was on a big wooden counter), the vibration motor to simulate recoil and the speaker that made the firing noise(built into the gun body).

    I'm going to build a wooden base box to mount it on and would like to have it "shoot" when the trigger is pressed.

    Any ideas on a circuit?

    Thanks, cary
     
  2. SgtWookie

    Expert

    Jul 17, 2007
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    Build Roman Blacks' 1-bit sound board; plans & kits (soon) on romanblack.com
    Then record your own machine-gun samples into the device.

    Or, build something like this:
    http://www.electronickits.com/kit/complete/audi/ck1206.htm

    It would be pretty hard to devise a synthesizer that would sound halfway believable for a machine gun.
     
  3. redlight000

    Member

    Feb 26, 2010
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    Hi Shortbus,
    dont know if this chip would suit your requirements, "The UM3561" thats got a machine gun sound built in... like sgt wookie said but this only needs a Spst switch.. to switch the whole device on.. its the Velleman sound generator the cheap one £6.99 or 5.99 cant remember.. but its real cool... operates on 9volt PP3 battery.. and it does Police, ambliance fireengine, machine gun.. the output is a bit naff being a Square shaped speaker.. @ 8ohms.. I'm sure you could add your own speaker if you wanted.. Just a suggestion here.. Ive built about three of these.. & Yes the PCB comes with it as do all the parts... very neat kit.. me thinks..
    cheers
    redlight000
    :D SORRY The place to get it from is old Maplins" OK?
     
  4. SgtWookie

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    Jul 17, 2007
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    It's tidbits like this that cause me to hang around here as much as I do, for the "naff bits". ;)
     
    redlight000 likes this.
  5. redlight000

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    Feb 26, 2010
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    Thanks sgt wookie...
    I dont know how to take that????????????????? was the Post Naff?

    anyhow see you later aligator..not for a while crocodile lol< Joke.
    :D
     
  6. shortbus

    Thread Starter AAC Fanatic!

    Sep 30, 2009
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    Thank you both for the answer, they are both the same basic kit, so they must be OK.

    redlight, you say you've used them? Do they sound similar to a gunshot? Could I run the output of the kit through a LM386 amp to make it louder?

    Also you guy's are using a word I;m not familiar with- NAFF? Whats that?

    Thanks again both of you.
     
  7. redlight000

    Member

    Feb 26, 2010
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    Hi Shortbus,

    To be Honest, "No" it dont sound like that, more of continuous, sound ie(like you wanted machine gun sound) ... You proberly heard google search for "gun shots" sound effects CHip or Intergrated circuit....

    Do you know about the Timer Chip? I have not tried this myself but if you get the oscilliation right, with say two timers.. the first in astable mode then feed that to the second timer, that may work.. but its Trial & error.. like I've had to do.. flipping seven years I've been on electronics.. and got various sound effects that I wanted not the Chip wanted <lol> give it a try...
    Failing that you got rapidelectronics.. RS components, Quasar <"Yes" they do a special sound chip which covers a multitude of sounds.. oakley electronics, to name a few...

    or another one Globalspec.com they cover loads of chips but you have to enquire.. ok?
    Hope this helps...:D
    good luck..
    redlight000
     
  8. redlight000

    Member

    Feb 26, 2010
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    Sorry I forgot to add,
    that I dont know about amps Ive read up on them like the LM386.. LM380 etc... but my sounds are usually loud anyway, unless I increase the resistance on the output, pin 3 in case of the timer.. it can get quite complex Im afraid.. but you get amazing results.. if you push and push... yes it gets boring but if you want what you want then go 4 it.. & I find it comes in the end (Hopfully)
    ok..
    cheers
    :)
     
  9. shortbus

    Thread Starter AAC Fanatic!

    Sep 30, 2009
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    redlight, OK, thanks again
     
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