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paper_bits:pb701_electric_intonarumori [2019/07/16 16:00] admin [PB701 Electric Intonarumori] |
paper_bits:pb701_electric_intonarumori [2019/07/16 16:07] admin [PB701 Electric Intonarumori] |
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| I added the voltage control and some extra functions, like the noise on/off the boost and the mute function to the circuit. | I added the voltage control and some extra functions, like the noise on/off the boost and the mute function to the circuit. | ||
| - | The Electric Intonarumori has an audio an an control voltage input, while building the board one has to choose between bus 1 and bus 2 for the audio input and the other bus for the control input. | + | The core of the board is the digital delay chip [[http://www.princeton.com.tw/Portals/0/Product/PT2399_1.pdf|PT2399]]. It has some OpAmps build in to filter the sound and do the echo. In this application everything that helps to get rid of the noise of the chip itself was avoided, that leads into a self sustainible noise source.\\ |
| + | The "echo" could be changed with a potentiometer, the "delay" with CV (0 to 5V) or with a potentiometer. An other Low Pass filter could be changed with the third potentiometer.\\ | ||
| - | The board is named after the instrument "Intonarumori" of the Italian Futurist, painter, composer and the author of the manifesto The Art of Noises, [[https://en.wikipedia.org/wiki/Luigi_Russolo|Luigi Russolo]]. | + | The Electric Intonarumori has an audio and an control voltage input, while building the board one has to choose between bus 1 and bus 2 for the audio input and one has to use the other bus for the control input.\\ |
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| + | The board is an homage and is named after the instrument "Intonarumori" of the Italian Futurist, painter, composer and the author of the manifesto The Art of Noises, [[https://en.wikipedia.org/wiki/Luigi_Russolo|Luigi Russolo]].\\ | ||
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