10.6

708Logic Pro Instruments
• Sawtooth wave: Clear and bright-sounding, a sawtooth wave contains both odd and
even harmonics, as well as the fundamental tone. It is ideal for creating string, pad,
bass, and brass sounds.
• Square and pulse waves: Hollow and woody-sounding, a square wave can contain a
wide range of odd harmonics, as well as the fundamental tone. It is useful for creating
reed instruments, pads, and basses. It can also be used to emulate kick drums, congas,
tom-toms, and other percussive instruments—often when blended with another
oscillator waveform, such as noise.
The square wave can be reshaped to make the waveform cycles, or pulses, more
rectangular, by using a pulse width modulation (PWM) control. The more rectangular
the wave becomes, the more nasal it sounds. When modulated in this way, the square
wave is known as a pulse wave, and contains fewer harmonics. It can be used for reeds,
basses, and brass sounds.
• Triangle wave: A triangle wave contains only odd harmonics, as well as the fundamental
tone. The higher harmonics of the triangle wave roll off faster than those of a square
wave, making the triangle wave sound softer. It is ideal for creating flute sounds, pads,
and vocal “oohs.”