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The sawtooth wave (or saw wave) is a kind of non-sinusoidal waveform. It is so named based on its resemblance to the teeth of a plain-toothed saw with a zero rake angle. A single sawtooth, or an intermittently triggered sawtooth, is called a ramp waveform. The convention is that a sawtooth wave ramps upward and then sharply drops.
While the basic synthesizer architecture of the Micromoog was a simple VCO/VCF/VCA, inexpensive enhancements provide different creative options than the Minimoog. Its single voltage-controlled oscillator's waveshape is variable from sawtooth to pulse, [3] which can also be modulated. Additionally, a sub-octave can be added one or two octaves below.
A completely different approach to function generation is to use software instructions to generate a waveform, with provision for output. For example, a general-purpose digital computer can be used to generate the waveform; if frequency range and amplitude are acceptable, the sound card fitted to most computers can be used to output the generated wave.
It is used as the starting point for subtractive synthesis, as a sawtooth wave of constant period contains odd and even harmonics that decrease at −6 dB/octave. The Fourier series describes the decomposition of periodic waveforms, such that any periodic waveform can be formed by the sum of a (possibly infinite) set of fundamental and harmonic ...
The features of this chip were also incorporated into other Yamaha sound chips including the YM2203 and YM2608 chips, these were also capable of FM synthesis. In the same year Atari designed the POKEY chip for its home computers and game systems. It incorporated a PSG. [3] In 1979, Texas Instruments SN76489 was produced for the TI-99/4 computer.
The MS-10 synthesizer features a single voltage-controlled oscillator (VCO) offering four waveforms: triangle, sawtooth, pulse, and white noise, and incorporates the same 12dB/octave low-pass filter found in the original MS-20.
PPG Wave 2.2 front panel. PPG's Wave series represents an evolution of its predecessor by combining its digital sound engine with analog VCAs and 24db per octave VCFs, featuring 8-voice polyphony; and by replacing its nontraditional series of push buttons and sliders with a control panel consisting of an LCD and a more familiar arrangement of knobs.
Available waveforms include sawtooth, triangle, variable width pulse, square, and noise. Unusually, the JP-6 allows simultaneous selection of any or all of the waveforms in each of its two oscillator banks, an option not found on the JP-8.