[w3ctag/design-reviews] Early TAG review request for Playout Statistics API for WebAudio (Issue #939)

こんにちは TAG-さん!

I'm requesting a TAG review of Playout Statistics API for WebAudio.

There is currently no way to detect whether WebAudio playout has glitches (gaps in the played audio, which typically happens due to underperformance in the audio pipeline). There is an existing way to measure the instantaneous playout latency using AudioContext.outputLatency, but no simple way to measure average/minimum/maximum latency over time. With this API, we want to propose a way to be able to measure the delay of that audio and the glitchiness of the audio.

  - Explainer¹ (minimally containing user needs and example code): https://github.com/WICG/web_audio_playout 
  - User research: none
  - Security and Privacy self-review²: https://docs.google.com/document/d/1wGv_mr7Lgg2w-6PuKDrcScoa8IvYAOW3PMTFW85O3Gw/edit 
  - GitHub repo (if you prefer feedback filed there): 
  - Primary contacts (and their relationship to the specification):
      - Fredrik Hernqvist (Hernqvist), Google
      - Palak Agarwal (palak8669), Google
  - Organization/project driving the design: Google
  - External status/issue trackers for this feature (publicly visible, e.g. Chrome Status): https://chromestatus.com/feature/5172818344148992 

Further details:

  - [X] I have reviewed the TAG's [Web Platform Design Principles](https://www.w3.org/TR/design-principles/)
  - The group where the incubation/design work on this is being done (or is intended to be done in the future): WICG
  - The group where standardization of this work is intended to be done ("unknown" if not known): W3C Audio Working Group
  - Existing major pieces of multi-stakeholder review or discussion of this design:
  - Major unresolved issues with or opposition to this design:
  - This work is being funded by: Google

We'd prefer the TAG provide feedback as (please delete all but the desired option):

  💬 leave review feedback as a **comment in this issue** and @-notify Hernqvist, palak8669



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