Monophonic synthesizer "Altair-231".

Electronic musical instrumentsProfessionalThe monophonic synthesizer "Altair-231" was produced in the 1980s by the Zhytomyr plant "Elektroizmeritel". The synthesizer is designed to reproduce sounds of various nature - from imitating the sounds of natural instruments, to obtaining complex synthesized timbres, effects, percussion sounds ... The synthesizer has a 4-octave keyboard, a pitch control wheel, parameter controls on the front panel, output to telephones, pedal input. Consists of four main blocks of sound synthesis - Generators, Mixer, Filter, Contour. The synthesizing part is based on 3 master oscillators, each with independent parameters of registers, waveform, modulation frequency. There is a white and pink noise generator. A low pass filter with basic parameters allows for keyboard tracking. The synthesizer includes a portamento function with variable speed. There is a 440 Hz tone signal for tuning the instrument's scale. A line-in is provided for connecting an external sound source. The inputs and outputs are 1/4 jacks.