3/27/2023 0 Comments Tubular bell note c sample![]() This modifies the decay rate of envelope AHD-Env2, creating subtle changes in the sound and ensuring that the patch sounds more interesting (and more realistic) than the static samples found in most drum machines and samploid synths.įigure 2: A hi-hat patch for the Nord Modular. ![]() You can even emulate the opening and closing of the hats by adding modules such as the Control Sequencer at the bottom left of Figure 2. Making the envelopes briefer still produces excellent imitations of the stick hitting the hat, and careful adjustment of the filter frequencies, envelope times and mixer settings (the last of which controls the relative loudness of the stick impact and the body of the sound) creates very realistic effects. For example, shortening the envelope times allows you to synthesize very acceptable hi-hats. And, as suppositions go, this is not a bad one. It therefore seems reasonable to suppose that we can adjust the parameters in Figure 1 to emulate a range of percussion instruments related to cymbals. These produce a dense fog of enharmonic partials that, without need for any further treatment, sound inherently 'metallic'. The key to this patch is the use of the six oscillators arranged as three frequency-modulated pairs. To demonstrate this, let's consider the cymbal patch in Figure 1 (above), with which I concluded last month's Synth Secrets. Having found that we can recreate the cymbal sound with reasonable realism, you might be forgiven for thinking that we can use our cymbal patch to synthesize other metallic percussion instruments. You might think that these share few characteristics with cymbals, but they are all rigid objects that require no tensioning mechanism in order to vibrate and produce a sound, in contrast to the membranophones discussed in past Synth Secrets (such as the snare and bass drums). Cymbals, hi-hats, and bells are all idiophones, but the family also includes instruments such as marimbas and xylophones. Though you may not have been aware of it, for the past three months we've been investigating the sound-generation mechanism of a particular class of idiophones, the cymbals. But there's more to this than you might think. Having come up last month with a reasonably realistic cymbal patch, it's time to take the principles of synthesizing metallic percussion one stage further, and produce bell sounds. Figure 1: Synthesizing a cymbal using the Nord Modular.
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