Αποτελέσματα Αναζήτησης
29 Δεκ 2004 · The most important signals are the sum and difference of both frequencies. (This principle of mixing two signals to get a 3rd one is called heterodyning.) Lets say we have one oscillator on 500 kHz and another on 501 kHz, the sum will be 1001 kHz and the difference 1 kHz. This 1 kHz is audible.
- Of The Theremin Making
This is the theremin you can hear in the “theremin samples”...
- Clara Rockmore Theremin Service Notes
The theremin tubes are surface mounted to this bulkhead,...
- The Last Terpsitone on Earth
a marvelous instrument to play when ur pissed-bet Les Dawson...
- Moog Music Announces Etherwave Pro
The Etherwave Pro covers the entire musical pitch range, up...
- Of The Theremin Making
The Theremin has two very high frequency oscillators (around 350 kHz). One of them is fixed, and the other is varied by the capacitance of your hand: it's the difference between the two frequencies which decides the pitch.
Depending on your hand position and the adjustment of the instrument, the beat frequency can be anywhere from around 65 Hz to about 3 kHz (260 kHz minus 257 kHz). These are audio frequencies, and they correspond to a range that spans from about two octaves below middle C to about three-and-a-half octaves above middle C.
4 Σεπ 2009 · With pure sine waves it's simple - if the input frequencies are 175kHz and 176kHz then the difference is 1kHz (audible) and the sum is 351kHz - well above the audible range and in the RF range. With other waveforms you have to consider the harmonics as well as the fundamental frequencies.
30 Ιουν 2021 · Based on a recent discussion in another thread about the 44.1KHz sample rate of CD's, I found a few charts showing various musical instruments and their frequency ranges. Interesting that none of them have harmonics at (let alone above) 20 kHz.
These waves are of a definite length and frequency. The approach of a hand, which is an electrical conductor, alters the conditions in the electro-magnetic field surrounding the antenna, changes its capacity and thus affects the frequency of the alternating current generated by the apparatus.
Calibrating the Frequency Signal The frequency range for the Theremin should be at least two octaves (220 to 880 Hz). A second LabVIEW subVI called Scale Frequency.vi, as shown in Fig. 5, converts the second photometer signal level into a frequency level. The photometer input (0 to 6 V) is converted into an audio
