"I think the digital wizard you hand this off to will likely end up being you! ;-)" - Dewster
Nope -
;-)
I need some help -
I need .wav files of as many theremins as I can get samples of.. these would ideally be taken direct from the theremins output socket with no processing and certainly no other instruments in the mix. Im not bothered about sample length (I will be selecting the bits I need) but a wide range of pitches as well as pieces with limited span are all needed.
The most useful .wavs I could get would be slow sweeps and sweeps where the volume is "pumped" quite quickly - I need to know that my circuit will maintain "tracking" at low signal levels, wont give problems at high signal levels, and will follow whatever is thrown at it in terms of normal theremin harmonics.
If anyone knows where I can download these, or if anyone can email me some, I would be extremely pleased!
Unlike past times when I have asked for samples, I am not asking for anything exotic this time.. I am not reying to use these to derive their character or analyse them for cloning, I really want signal from common theremins - But I am also interested in less common ones - even non-heterodyning instruments like the 91.
These signals will first be used to drive a simulation of my vocal harmonics modifier, prior to driving a physical prototype - after which hopefully the prototype will be tried with physical theremins.. The unit should be low enough cost that I may just be able to build 5 which I could pass 'round for thereminist to evaluate (I can probably do this because I have a huge stock of parts - all I would need to buy is probably PCB's, enclosures and potentiometers).
If anyone sends me samples, please specify which theremin and what the settings were if at all possible - also, let me know if you would be happy (or not) for the sample (or portion thereof) to be "published" with the modified sound - or if you are not happy about that, whether you would like me to send you any modified sound so you could express an opinion on it.
Due to the time it takes to run audio simulations, I doubt that processed samples will be long.
Anyone technical data regarding the signal - for example its actual output voltage etc, would be useful - but dont worry if you dont have that or dont know what im talking about! ;-)
Wav's from EW's, E-Pros, Jaycars, Theremax, Subscope's, are all welcome, as are sounds from Lev's theremins ;-) (but I probably want these more for other reasons ;-) .. The more samples I can get, the more chance I will have of finding any anomalies..
Technical:
I have just designed a harmonics modifier to hopefully convert theremin audio to usable larynx-like waveform that will excite my formant filters, and think I have solved all the problems related to variable amplitude and the bass end (got rid of the PLLs which my prior design depended on and which I couldnt use with audio, but could only use with HF)
The formant filters are "built" and seem to work well, the harmonics modifier works well with generic simulation generators..
The Theremin Vox-Box could actually happen!
;-)
Fred.
