YAMAHA TG-77 Tone Generator Sound Module

Yamaha TG77 is the rack-mounted equivalent of Yamaha Corporation's SY77 synthesizer workstation. It, too, is a 16-voice multitimbral music (synthesizer) utilizing Yamaha's Advanced Frequency Modulation; Advanced Wave Memory; and the combination of these two systems, either by layering together or by modulating an AFM voice by an AWM wave, the latter process being termed Realtime Convolution and Modulation Synthesis (RC&M). The unit came into production in 1989, simultaneously with the SY77. The 77 series (and its successor, the SY99, feature various filters, which approximate those of analog equipment. Eight filters can be controlled by dedicated envelope generators. The TG77 is equipped with two sets of stereo outputs, like the SY77, and is enhanced vs. the latter by having eight individual outputs which are assignable to individual internal instruments. Like the SY77, the TG77 has a large LCD display, and programming takes place through a keypad on the front panel.