SQ-80 — Musician's Manual
3) ADDITIVE SYNTHESIS WAVEFORMS
These three Waveforms were created through Digital Additive Synthesis. Each contains the
Fundamental and certain specific harmonics in equal amounts.
____
> SYNTH 1. Contains the fundamental, and every third harmonic, starting from the 2nd, up to the
26th . in equal amounts:
Harmonics: 1, 2, 5, 8, 11, 14, 17, 20, 23, 26.
— > SYNTH 2.
Contains the fundamental, and every third harmonic, starting from the 4th. up to
the 25th in equal amounts:
Harmonics: 1, 4, 7, 10, 13, 16, 19, 22, 25.
> SYNTH 3. Contains the fundamental, and the prime-numbered harmonics, up to the 23rd. in
equal amounts:
Harmonics: 1, 2, 3. 5, 7, 11, 13, 17, 19, 23.
4) FORMANTS
These five Waveforms were created through a process called Time-Domain Formant-Wave-
Function Synthesis. Each one has a sharp peak in its frequency spectrum— like pushing one band
of a graphic equalizer all the way up. These Waves are multisampled in such a way that the
frequency peak remains relatively constant up and down the keyboard, rather than tracking the
pitch of the note. Each has its peak centered around a different frequency. They tend to have a
nasal quality, and make excellent component waveforms for Vocals, Strings etc.
____
> FORMT 1. Has a frequency peak centered around 750 Hz.
−
FORMT 2. Has a frequency peak centered around 1 kHz.
FORMT 3. Has a frequency peak centered around 1.4 kHz.
− FORMT 4. Has a frequency peak centered around 1.75 kHz.
− FORMT 5. Has a frequency peak centered around 2.25 kHz
5) BAND LIMITED WAVEFORMS
These Waveforms are Band Limited — that is, their harmonic content has been restricted along
certain specific lines. They are good for adding controlled harmonics to a sound. or for combining
to achieve various timbres. Some are other Waves with some harmonics pulled out; some were
built "from scratch" to contain only certain harmonics.
PULSE2. Originally a Pulse Wave, like the Pulse Wave above, but with only the first 11
harmonics left in.
SQR 2. Originally a Square Wave, but with only the first 7 harmonics left in.
> 4 OCTS. Contains, in equal amounts, only four harmonics — 1st, 2nd. 4th, 8th. Fundamental
and three Octaves; again, good for Organ sounds.
____ > PRIME. Contains, in equal amounts, only the first five prime-numbered harmonics: 1st, 3rd.
5th. 7th, and 1 1 th.
Section 3 — Voice Programming
35
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