<Tr> <Td> </Td> <Td> Logic Synth "Pollinate" - Logic Synth and Effects Demonstration. ogg Logic's ESX24 Sampler, EVD6 Clav and ESE Ensemble Synthesizer in effects of space designer, ring modulation and "bitcrusher" </Td> </Tr> <P> Following the availability of programmable music sequencers such as the Synclavier and Roland MC - 8 Microcomposer in the late 1970s, bass synths began incorporating sequencers in the early 1980s . The first bass synthesizer with a sequencer was the Firstman SQ - 01 . It was originally released in 1980 by Hillwood / Firstman, a Japanese synthesizer company founded in 1972 by Kazuo Morioka (who later worked for Akai in the early 1980s), and was then released by Multivox for North America in 1981 . </P> <P> A particularly influential bass synthesizer was the Roland TB - 303 . Released in late 1981, it featured a built - in sequencer and later became strongly associated with acid house music . Bass synthesizers began being used to create highly syncopated rhythms and complex, rapid basslines . Bass synth patches incorporate a range of sounds and tones, including wavetable - style, analog, and FM - style bass sounds, delay effects, distortion effects, envelope filters . In popular music, these techniques gained wide popularity with the emergence of acid house music, after Phuture's use of the TB - 303 for the single "Acid Tracks" in 1987, though such techniques were predated by Charanjit Singh's use of the TB - 303 in 1982 . </P> <P> In the 2000s, several equipment manufacturers such as Boss and Akai produced bass synthesizer effect pedals for electric bass guitar players, which simulate the sound of an analog or digital bass synth . With these devices, a bass guitar is used to generate synth bass sounds . The BOSS SYB - 3 was one of the early bass synthesizer pedals . The SYB - 3 reproduces sounds of analog synthesizers with Digital Signal Processing saw, square, and pulse synth waves and user - adjustable filter cutoff . The Akai bass synth pedal contains a four - oscillator synthesizer with user selectable parameters (attack, decay, envelope depth, dynamics, cutoff, resonance). Bass synthesizer software allows performers to use MIDI to integrate the bass sounds with other synthesizers or drum machines . Bass synthesizers often provide samples from vintage 1970s and 1980s bass synths . Some bass synths are built into an organ style pedalboard or button board . </P>

The sound source of the synthesizer is an oscillator