> For the complete documentation index, see [llms.txt](https://plugins.audacityteam.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://plugins.audacityteam.org/nyquist-plugins/generator-plugins/instrument-sound-generators.md).
# Instrument Sound Generators
## Fire and Explosion sounds
Emulates a Korg MS-10 synthesizer patch.
{% file src="/files/3mVhZX9t79xCs4hx8mpL" %}
Download link
{% endfile %}
{% file src="/files/hCT3j2HYRrg7RnjlpFFV" %}
Fire and explosions audio file
{% endfile %}
Details
Author: [David R.Sky](https://audionyq.com/david_r_sky)
Emulates a Korg MS-10 synthesizer patch.
Parameters:
1. **Audio type:** \[0=fire 1=explosion, default=1]
2. **Sound duration:** \[0.1 to 60 seconds, default=3]
3. **Attack time:** \[0 to 500 milliseconds, default=50]
4. **Explosion decay time:** \[0 to 500 milliseconds, default=500]
5. **Decay down to this level:** \[1 to 100 %, default=30]
6. **Cutoff frequency:** \[100 to 10000 Hz, default=3800]
7. **Filter quality:** \[Q: 1 to 20, default=10]
8. **Bass boost frequency:** \[10 to 1000 Hz, default=300]
9. **Bass boost:** \[0 to 60 dB, default=30]
10. **Clipping amount:** \[0 to 99 %, default=55]
## KLSTRBAS
KLSTRBAS (for "cluster bass") generates dense sounds by combining several waveforms with a fixed frequency ratio between them.
{% file src="/files/Fq10vjlVbtDyiXXq59kQ" %}
Download link
{% endfile %}
{% file src="/files/pQkXW8ycwZmN287hKisW" %}
Cluster bass audio file
{% endfile %}
Details
Author: Steven Jones.
KLSTRBAS (for "cluster bass") generates dense sounds by combining several waveforms with a fixed frequency ratio between them. Early Roland drum machines created cymbal sound in part by combining multiple square waves with non-integral frequency ratios. The combined signal was then high-pass filtered to produce a very dense cluster of high frequency harmonics. The genesis of KLSTRBAS was a failed attempt to create cymbal sounds using this technique.
Parameters:
1. **MIDI key:** \[0 - 127, default 45]
2. **Decay:** \[0 - 30 whole seconds, default 2]
3. **Fractional Decay:** \[0 - 99 hundredths of a second, default 0] - synth kick drum sounds can be produced by setting Decay time to zero and fractional decay to a low value.
4. **Density:** \[1 - 6, default 4] - Sets the number of component waveforms, defined as four times the density value. Higher densities produce a deeper flange effect but can also cause the sound to go out of tune.
5. **Detune:** \[0 - 99, default 0] {these two parameters affect the relative
6. **Flange:** \[0 - 4, default 2] frequencies of the component waveforms}
7. **Wave table:** \[0=sine 1=tri 2=sqr 3=saw (default}] - type of component waveform. These are not band limited so [aliasing](http://en.wikipedia.org/wiki/Aliasing) may result if either MIDI key or generated frequencies are too high.
*Technical note:* The frequency of each component is determined by the MIDI key number and the detune and flange parameters. Specifically the nth component has a frequency of:\
p \* (1 + d/100 + g)^n where:\
p is the fundamental frequency determined by the key number,\
d is the detune amount 0 <= d <= 99, and\
g is derived by the flange parameter (g = 1/(10^(4-f)) for flange value f)
## Pluck (Hz)
Pluck generates a synthesized pluck tone with abrupt or gradual fade-out.
{% file src="/files/PvKJhK592raWJ214zLDL" %}
Download link
{% endfile %}
{% file src="/files/ANj0zxwZ8MnFwPbamjSC" %}
Pluck (Hz) audio file
{% endfile %}
Details
Author: [David R.Sky](https://audionyq.com/david_r_sky) and Steve Daulton.
Pluck generates a synthesized pluck tone with abrupt or gradual fade-out. The sound is the same as the [Pluck effect](https://manual.audacityteam.org/o/man/pluck.html) that is shipped with Audacity, except that the pitch of the note is determined by entering a frequency in Hz (cycles per second) rather than a MIDI note.
Parameters:
1. **Pluck frequency (Hz):** \[10 to 10000, default 261.626] The default frequency is equivalent to MIDI note 60.
2. **Fade-out type** \[abrupt or gradual, default "abrupt"] Determines how rapidly the pluck sound decays.
3. **Duration \[seconds]:** Specifies the length of the pluck sound. The default is 1.0 second.
A table showing the relationship between note names, MIDI note numbers, and frequency (A440 standard tuning) is available [HERE](http://subsynth.sourceforge.net/midinote2freq.html).
## Risset Bell
Simulates a realistic bell tone based on the pioneering work of Jean Claude Risset.
{% file src="/files/0u9mLqAdP0Td8Xv9ZeqC" %}
Download link
{% endfile %}
{% file src="/files/0iq4dN0kZuIN8VTj7B4c" %}
Risset bell audio file
{% endfile %}
Details
Author: Steven Jones.
Simulates a realistic bell tone based on the pioneering work of Jean Claude Risset. This plugin is an adaptation of a demonstration lisp file by Pedro Jose Morales contained in the standard Nyquist distribution.
Parameters:
1. **MIDI key:** \[0 - 127, default 72]
2. **Decay:** \[0 - 30 seconds, default 10]
3. **Fractional Decay:** \[0 - 99 hundredths of a second, default 0]