The TR-909 hi-hat is a recorded sample, not a synthesized sound

Unlike the TR-808, which synthesizes its hi-hat electronically, the TR-909 simply plays back a recorded sample for its hi-hat sounds. This means that 909-hat emulation in synthesis contexts is technically just sample playback, not percussion synthesis. The distinction matters when the goal is to build a synthesized drum kit from first principles: a sampler with a good 909 sample will always beat a synthesis approximation for that specific timbre, so synthesis effort is better directed toward original sounds.

Examples

In a percussion synthesis context, choosing not to replicate the 909 hat is correct: use a sampler for authentic 909 tones. For novel metallic sounds, prefer the noise-bandpass patch or a complex oscillator approach.

Assessment

True or false: the TR-909 generates its hi-hat sound using analog oscillators. Explain what it actually does and why this affects whether it is worth synthesizing.