I'm looking to build an electrotheremin, which as I understand it is just an audio oscillator with a slide potentiometer determining pitch.
12.
Hewlett-Packard's first product, built in the garage, was an audio oscillator, the HP200A . One of Hewlett-Packard's first customers was Fantasia ".
13.
The Negative and Positive Slews, were able to function as envelope followers, low pass filters, modulating waveforms, subharmonic generators, and audio oscillators.
14.
Their breakthrough was an order from Walt Disney Studios for eight audio oscillators to be used in the making of the movie " Fantasia ."
15.
One of their first products was the Model 200B audio oscillator, used to control sound volume and quality for Walt Disney Studios'full-length " Fantasia " cartoon.
16.
Hewlett-Packard's first product was an audio oscillator for testing sound equipment that was based on a design developed by Hewlett when he was in graduate school.
17.
The picture was identified as the prototype _ built in 1938 by William Hewlett when he was a student at Stanford University _ for an audio oscillator.
18.
It enabled the design of accurate fire-control systems in World War II, and it formed the basis of early operational amplifiers, as well as precise, variable-frequency audio oscillators.
19.
Each photosensor would send its signal to an audio oscillator set to a different frequency, with the top photosensor driving the highest frequency and the bottom photosensor driving the lowest frequency.
20.
An HP ad published in several newspapers showed a black-and-white photo of an audio oscillator built in the 1930s, HP's first product, with the heading : " What if we had stopped here ?"
