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wizards teeth on 2001-08-30 13:49 [#00027820] | |||||||||
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does anyone have knowledge of electronic circuits ? i have purchased a small kit from maplins that makes animal sounds if i alter the resistance will the sounds change or will the circuit blow up ? |
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rF from a warm place on 2001-08-30 15:44 [#00027846] | |||||||||
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Altering the resistance only changes the volume of the sound, not pitch or dynamics. There are some interesting effects you can get by putting capacitors and inductors in series/parallel with the sound generators, as you can get low/high/bandpass and bandstop filters on the individual sounds... By putting a diode in series after the sound generator, you can get a nice gravel-ish distortion, because it only lets current pass one way, therefore it clips off the bottom half of the waveform.. |
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wizards teeth on 2001-08-30 16:19 [#00027852] | |||||||||
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what i want to make is a box using this circuit as the starting point would a potentiometer only changed the pitch, if so, is it possible to get dioded and capacitors that alloe me to alter the sound output by turning a dial? ie - a variable diode / variable capacitor ? thanks again teeth |
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rF from a warm place on 2001-08-30 16:39 [#00027855] | |||||||||
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A potentiometer would only alter the volume of the sound.. Variable diodes do not exist, they are simply components that only let current through one way. I have a simple distortion circuit diagram, if you want me to send it to you.. I also have some other effects, like amplitude modulation (the volume of the sound follows a preset waveform, either sine, square or sawtooth).. Pitch shifting of a waveform is very hard to do with analog circuits, it has to be done with DSP (digital signal processing), although a tone control would be easy enough to make (by putting a parallel potentiometer/capacitor combination in series with the sound generator). I have circuit diagrams of this if you want any help. I also have the complete circuit diagram of a 303, I'm planning on building one for myself. I will of course modify it, putting in distortion, delay, etc.. Just e-mail me if you want any circuit diagrams, I'll sort you out. |
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wizards teeth on 2001-08-30 17:30 [#00027870] | |||||||||
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yes please rob i would love the 303 diagram i tried to e-mail you but it would not work here is mine david.bullock@ncjmedia.co.uk |
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did you get the email |
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