Hello. Yes, I've read that it's achieved through heterodyning. But in this case we're left again with a sinusoidal (which goes against Joseph's mail). I guess the secret is the kind of filtering that the signal suffers. What kind of distortion are you talking about? Thanks to both of you, Cheers, Pedro On Jan 16, 2008 2:11 PM, Michael Gogins wrote: > The Theremin sound is produced by heterodyning. There is a fixed frequency > radio-frequency oscillator, and a variable frequency radio-frequency > oscillator controlled by one hand. The audio frequency beats between the two > RF oscillators (sum and difference tones) are heard. In audio signal > processing terms, perhaps this could be modeled by amplitude modulation with > some waveshaping distortion, or simply by a sine oscillator passed through > waveshaping distortion. > > It would also be very easy to write a new opcode in C or C++ with > high-frequency oscillators (based on difference equations) to model the > Theremin directly. > > Regards, > Mike > > > > ----- Original Message ----- > From: "Mahound" > To: > Sent: Wednesday, January 16, 2008 4:40 AM > Subject: [Csnd] Theremin sound > > > > > > Hello. > > Does anybody have information about the waveform produced by the Theremin? > > I > > tried to google, but some places say it's a sinewave, and some others that > > it's not exactly it (and it in fact sounds richer). However, I cannot find > > any real analysis of the timbre of this instrument (weird...). Aren't > > there > > any csound orchestras for that? > > > > Cheers, > > > > Pedro > > -- > > View this message in context: > > http://www.nabble.com/Theremin-sound-tp14875977p14875977.html > > Sent from the Csound - General mailing list archive at Nabble.com. > > > > > > > > Send bugs reports to this list. > > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe > > csound" > > > > Send bugs reports to this list. > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" >