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Free Sound Samples?
TwistedSquare asks: "I like to write small games from time to time, and have often wondered about adding sounds. Searching around on the internet, I can find loads of GPL sound libraries but no sound effects/samples that are both royalty-free and free (as in beer). Can anyone suggest how I could find such effects and does anyone else find it odd the contrast between the amount of GPL software and non-GPL-type items in areas such as sound effects?"
Use a microphone and an audio recording device.
To sample the sound of a person falling use a strategically placed bannana peel.
The sound of an automobile accident can be generated by using a wrench to unbolt a stop sign.
The sound of spectacular space battle explosion can be created by unplugging the microphone.
134340: I am not a number. I am a free planet!
(Responding to myself)
In case you need some ideas to get you started:
- Simple musical notes -- m(f) = sin(t/f) where f is the frequency. IIRC, 440hz = A natural below middle C, and you multiply by 2^(1/12) for every half-note higher.
- More realistic notes -- M(f) = (m(f) + c1*m(f*3/2) + c2*m(f*4/3) + c3*m(f*4/2)
... )*k1/(k1+t*k2), where the c's provide harmonics and the k's give a fade out.
- I'm sure a little googling will give even better formulas...
- White noise -- w = random
- Equipment -- w*c1*sin(t/f1) + w*c2*sin(t/f2)
..., where the c's & f's are used to modulate the white noise (because machines typically cycle)
- Rain -- w*w*w
- A waterfall -- c1*w + c2*w*w + c3*w*sin(t/f1+k*rand)
..., where you have 1) a steady roar, 2) some random splashes, 3) random, quasi-periodic fluctuation in flow, etc.
Heck,this could be more fun than writing the game!-- MarkusQ
Doing creative video production can be a lot like creating a game, and in this particular instance, what you're searching for is pre-made foley.
A lot of effects can be made simply by rubbing/banging objects together and then tweaking them, e.g., a grandfather clock is a piece of thick, taught cable hit lightly by a tire iron, slowed down 300%, and repeated. A sizeable personal effects library can be made by going around with even so much as a tape/MD recorder and a good mic just getting sounds from anywhere and everywhere. I'd recommend a boom mic if at all possible to prevent picking up background noise. But you might look a little weird doing it.
For "artificial" effects and maybe a little music, Korg's Electribe series of synths (EA-1 Analog Synth, ES-1 Sampler, ER-1 Rhythym Synth, EM[X]-1 "Music Production Stations" -- does all of the above to a limited extent) can provide endless resources, when properly played with, at least. I remember being in a crunch for a project and synthing out a perfect submarine "ping" in ten minutes on the ER-1. Obviously, more expensive synths will do more.
If you're really going for pre-made (despite my lectures to the contrary), try Opsounds -- Copyleft for audio. Make sure and contribute back, mmmk?
And of course, Sounddogs. The sounds (and even short-length compositions) are incredibly cheap -- we're talking $0.30-2.00 or so depending on length and license, high-quality, downloadable OR they can burn a CD and send it to you, and it's royalty-free forever at purchase. Considering they merely resell licensed effects, you'll probably find more than a few effects that you're trying to imitate in the first place.
I just read an article about Creative Commons and how their license is all about creating this sort of thing. Their stuff seems to be the like GPL.
Anyway - found this site with lots of Creative Commons Licensed effects - most of which are professional quality as they were used on the author's radio program.
http://www.leoville.com/sfx.shtml