[101] [CITE@en[Allow for specifying a sound through a URL · eae0873 · whatwg/notifications]]
( ([TIME[2014-11-16 11:34:15 +09:00]] 版))
<https://github.com/whatwg/notifications/commit/eae0873a49d07f4e1ba4bcb03a7db8aec0fa35b6>

[7] [CITE@en[Remove support for sounds from notifications]]
([[beverloo]]著, [TIME[2018-02-28 23:19:53 +09:00]])
<https://github.com/whatwg/notifications/commit/459bf358cae197a5b88c6a227e018756ef4c21cd>

[10] [CITE@en[Remove support for sounds from notifications by beverloo · Pull Request #127 · whatwg/notifications]]
([TIME[2018-03-02 18:10:49 +09:00]])
<https://github.com/whatwg/notifications/pull/127>