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4 Commits

Author SHA1 Message Date
hn8
dcfe7eaf4f Enhancement: audio speakers (#44) 
* refactor: active speakers

1. Observe the loudest adjusted with active ratio instead of linear average of decibel values
2. Follow RFC6465 to convert audio level from decibel to linear value.
3. Quantize audio level for stable slice comparison
4. Switch moving average algorithm from MMA to EMA to have the same center of mass with SMA
5. Minor: remove seenSids map allocation
6. Minor: minimize division arithmetic

* Update pkg/rtc/audiolevel.go

Co-authored-by: David Zhao <david@davidzhao.com>
 2021-07-09 09:46:24 -07:00
David Zhao
d69e9f451e Smooth audio levels by averaging over samples. 2021-06-21 18:14:28 -07:00
David Zhao
6be0c99fcc tune audio level sensitivity 2021-02-16 16:02:19 -08:00
David Zhao
a96069969d support audio level extension & active speaker detection (#20) 
* send active speaker updates with audio level

* add test on loudness sorting

* use a float to represent audio level
 2021-02-14 14:30:23 -08:00