Woodloop · 8.00 s
♥ 0↓ 1@sonicbricks
Hollow Log Drum
A mallet strikes a hollow log: a deep tonal wooden knock with a resonant air cavity and warm decay.
one-shot · 1.23 s · 0 downloads · 0 likes
0.00 / 1.23 sSmall open log
Tweak
renders in the CLI · WAVChange parameters to build an exact command. Your agent runs it with sb and gets the WAV.
$ sb get 3CWMP8ZCAV@1 --preset small-open -o hollow-log-drum.wav
How it's made
- Source
- one padded mallet strike, a 3-9 ms low-passed noise contact plus a smooth pressure pulse. Harder mallets shorten contact and expose the 1-3 kHz grain; there is no repeated strike.
- Body
- a hollow log couples an air mode at 82-165 Hz with a wooden shell at 1.57 times that pitch. Air T60 is 0.55-1.25 s; shell modes at ratios 1, 2.63, 4.39 and 6.12 lose treble progressively faster.
- Layers
- the lowest air mode carries the warm tail, a weak 2.81-ratio air mode adds hollow colour, and short inharmonic shell modes plus quiet contact noise define the tonal wooden knock.
- Envelope
- contact rises in 0.6-1.8 ms; upper shell modes die in 60-240 ms, the low shell in 0.3-0.7 s. The default air resonance decays 60 dB in 1.18 s, with a final soft fade ending around 1.4 s.
- Variation
- seeded tuning varies by 0.8 percent and each shell mode by 0.6 percent; contact uses its own noise stream. Pitch, mallet hardness, air sustain and strike position control physical differences.
- Presets
- bass centre, small open log, firm edge knock and muted padded strike; dry mono throughout.
| Parameter | Range | Default | Unit | Controls |
|---|---|---|---|---|
| pitch | 82 – 165 | 112 | Hz | Cavity pitch |
| hardness | 0 – 1 | 0.35 | — | Mallet hardness |
| sustain | 0.55 – 1.25 | 1.18 | s | Air decay |
| edge | 0 – 1 | 0.3 | — | Edge strike |
| seed | int | 1 | — | Variation, reproducible |
The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.
Revision history1
- r12026-10-25engine 1.0.1use('3CWMP8ZCAV@1')