Hello forum,

I'm working on a project that involves exciting a cymbal with sine waves in order to produce interesting harmonics and sound effects, to do this, I'm currently putting a sound exciter (http://www.parts-express.com/hiwave-25mm-soundpax-exciter-turns-virtually-anything-into-a-speaker--309-149) on the top surface of the cymbal and it works fine, but the project requires the excitation to be as invisible as possible.

I am very interested in trying a transducer like the one in this link: http://www.lutins.co.uk/cymbals.html which is attached to the mount of the cymbal instead; but I have not been able to find such device online. I wonder if anyone knows where can I get something like this or if someone could make one for me. Any advice is also very welcome.

Thanks a lot in advance!

Hello Forum,

I’m not sure this post belongs here but I’m looking for help anywhere I can.

I’m working on a project that requires controlling the frequency and amplitude of multiple string vibrators and the easiest way for me to do this is using audio signals controlled with a patcher.
I bought this device String Vibrator – WA-9857 : PASCO, it consists of a copper coil, a rare earth magnet and an aluminium reed, I already made my home imitation (http://imageshack.com/a/img542/3199/zzao.jpg). Since this device is made to work with a 5V AC power adapter at 60hz I have the following problem:

• If I use an amplified audio signal the coil overheats (it is important to note I'm using low frequencies, between 20 and 120 hz).
• If I use a sine wave generator I’m unable to control the signal’s frequency and amplitude from my computer, not to mention that I would need multiple generators to control each vibrator.

I’ve also got Economy Wave Driver – WA-9854 : PASCO, which is basically a loudspeaker with no cone and a reed to insert the string. This one does not overheat but it sounds loud and my project requires no sound or a soft sound. This would be my best solution but I need a way to get rid of the sound.

I am a musician and really don’t know much about electricity or amplification, I would love to hire someone to help me build a device that meets my requirements or I wonder if any of you has any ideas or advice for me.

Thank you very much in advance

Hello Forum,

I've been working in a patch that means to translate real time sound spectral data into color. Please excuse the verbosity but I will try to introduce some information first as I want to be very clear with my question:

In sound, Frequency is perceived as pitch, amplitude as loudness, while the amount of waves sounding simultaneously and their relationship between each other is perceived as timbre; the higher the amount of simultaneous frequencies, the more ‘chaotic’ the timbre (e.g: white noise), the lower the amount, the purest the timbre (eg: sine tone)

In Color, oversimplifying, we could say frequencies are perceived as spectral hues, amplitudes as brightness, while the amount of waves vibrating simultaneously and the relationship between each other determines mostly saturation, the higher the ammount of simultaneous frequencies, the less saturated the color (eg: white color), the lower the ammount, the purer the color (eg: spectral color), BUT the thing is that simultaneity also could be perceived as the mixing of different colors, it all depends on some sort of relation between amplitude and ¿harmony?

And this is were my questions begin, I would like to read a sound spectrum as if it were an electromagnetic spectrum (for now, please forget about the octaves issue), mapping frequency as spectral hue, amplitude as brightness and the amount of individual waves, and their relationship among each other to determine the saturation, but in order to do this, I need to know how color is synthesized from a spectrum.

So:

• How do I know when a frequency with certain amplitude should be considered as part of the synthesis or disregarded?

• How many peaks do I take into consideration?

-Are there any methods around to do this?

Any pointers would be most appreciated.

Thanks a lot in advance!