Seed #1549 is one entry in the Instruments 1-by-1 pillar of Calm Sound Archive. It is generated in the browser with the Web Audio API, so nothing is streamed and nothing is downloaded: the same seed number always produces the same piece of audio.
What you are hearing
Karplus-Strong plucked strings: a short noise burst circulates through a delay line, producing a harp-like tone whose brightness is set by the damping factor.
The musical material uses D Dorian at 57 BPM, tuned to 741 Hz. A binaural offset of 3.9 Hz separates the left and right channels slightly, which is what gives the track its width on headphones.
When to use it
Use it when you want a single instrument and nothing else — no bed of noise, no percussion, no vocals. This seed leans toward study & focus and runs at 57 BPM, so it moves slowly enough to sit under conversation or sleep.
Technical parameters
| Seed | #1549 |
|---|---|
| Pillar | Instruments 1-by-1 |
| Instrument | Music Box |
| Layer | Pure Solo Room |
| Engine | Karplus-Strong Celtic Harp |
| Scale | D Dorian |
| Tempo | 57 BPM |
| Tuning | 741 Hz |
| Binaural offset | 3.9 Hz |
| Filter ceiling | 2140 Hz |
How to listen
- Press play and choose a session length between five minutes and eight hours.
- Headphones give the binaural layer room to work; speakers still play the track but flatten the stereo image.
- Keep the volume where you can still hear the room. The fade-out at the end of a session is ten seconds, not a hard stop.