Slow-Scan TV meets Monotribe

November 6, 2011 · Posted in Uncategorized 

By matching the Monotribe’s LFO speed to the sync speed of an SSTV capture program, I am able to generate abstract imagery, and by controlling the pitch, LFO speed and filter cutoff / resonance, I have rudimentary control over the colors and shapes generated.

Wikipedia – Slow-Scan Television:
en.wikipedia.org/​wiki/​Slow-scan_television

Slow-scan television (SSTV) is a picture transmission method used mainly by amateur radio operators, to transmit and receive static pictures via radio in monochrome or color.

A technical term for SSTV is narrowband television. Broadcast television requires 6 MHz wide channels, because it transmits 25 or 30 picture frames per second (in the NTSC, PAL or SECAM color systems), but SSTV usually only takes up to a maximum of 3 kHz of bandwidth. It is a much slower method of still picture transmission, usually taking from about eight seconds to a couple of minutes, depending on the mode used, to transmit one image frame.

Since SSTV systems operate on voice frequencies, amateurs use it on shortwave (also known as HF by amateur radio operators), VHF and UHF radio.

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