https://stainless.corp.google.com/search?exclude_retried=true&first_date=2018-03-28&master_builder_name=&builder_name_number=&shard=&exclude_acts=true&builder_name=&master_builder_name_number=&owner=&retry=&exclude_cts=true&exclude_non_production=false&hostname=&board=&test=%5Eaudio_AudioAfterReboot%5C.internal_mic%24&exclude_not_run=false&build=%5ER68%5C-10610%5C.0%5C.0%24&status=FAIL&status=ERROR&status=ABORT&reason=&waterfall=&suite=%5Echameleon%5C_audio%5C_perbuild%24&last_date=2018-04-24&exclude_non_release=true&exclude_au=true&model=%5Elars%24&view=list
https://stainless.corp.google.com/search?exclude_retried=true&first_date=2018-03-28&master_builder_name=&builder_name_number=&shard=&exclude_acts=true&builder_name=&master_builder_name_number=&owner=&retry=&exclude_cts=true&exclude_non_production=false&hostname=&board=&test=%5Eaudio_AudioAfterReboot%5C.internal_mic%24&exclude_not_run=false&build=%5ER68%5C-10610%5C.0%5C.0%24&status=FAIL&status=ERROR&status=ABORT&reason=&waterfall=&suite=%5Echameleon%5C_audio%5C_perbuild%24&last_date=2018-04-24&exclude_non_release=true&exclude_au=true&model=%5Elars%24&view=list

Please check the waveform from the attachment.

This issue is similar to crbug/824657.
The speaker on host chromeos15-audiobox8-host1 is still to large for both tests (It should be smaller then my local setup since I test it without audio-box).

Need someone to lower the volume of the speaker on chromeos15-audiobox8-host1 a little bit more.
Thanks!