# AudioLevel · API · zvuk

zvuk v1.14.1 · MIT · https://zvuk.schmooky.dev/api/AudioLevel/

Live amplitude readout, returned by 
`voice.level()`
 and 
`bus.meter()`
.
Values are linear (0..1). Convert to dB with 
`20 * log10(value)`
.

- 
`rms`
 — root-mean-square over the most recent ~10 ms window. Smooth,
  matches what a VU meter shows.
- 
`peak`
 — maximum absolute sample in the same window. Fast-moving,
  matches what a peak meter / clip indicator shows.

Both numbers come from a single AnalyserNode read; calling 
`level()`
 more
than ~60 Hz is wasted work because the underlying time-domain buffer
doesn't refresh faster than the audio thread fills it.

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Interface

# AudioLevel

Live amplitude readout, returned by \`voice.level()\` and \`bus.meter()\` . Values are linear (0..1). Convert to dB with \`20 \* log10(value)\` . - \`rms\` — root-mean-square over the most recent ~10 ms window. Smooth, matches what a VU meter shows. - \`peak\` — maximum absolute sample in the same window. Fast-moving, matches what a peak meter / clip indicator shows. Both numbers come from a single AnalyserNode read; calling \`level()\` more than ~60 Hz is wasted work because the underlying time-domain buffer doesn't refresh faster than the audio thread fills it.

## Members

-   peak
-   rms