#12613 NORM Not Tri: Mic bias pop recorded loudly in Record on XO-4
Zarro Boogs per Child
bugtracker at laptop.org
Fri Mar 8 13:47:04 EST 2013
#12613: Mic bias pop recorded loudly in Record on XO-4
-----------------------+----------------------------------------------------
Reporter: greenfeld | Owner:
Type: defect | Status: new
Priority: normal | Milestone: Not Triaged
Component: kernel | Version: Development build as of this date
Keywords: | Next_action: diagnose
Verified: 0 | Deployment_affected:
Blockedby: | Blocking:
-----------------------+----------------------------------------------------
1. Record a video for a few seconds in Record on XO-4 in 13.1.0 os35.
2. Playback said video. There will be a loud pop heard at the start of
the video, possibly from the mic bias being turned on.
Similar power-on pops can be seen on a XO-1.75 (as well as maybe earlier
models) and heard in Audacity, although not as loudly. Audacity's
waveform view will show a sharp arc at the start of its recordings which
overshoots the centerline and then comes back to it when the recording
circuitry powers up.
--
Ticket URL: <http://dev.laptop.org/ticket/12613>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system
More information about the Bugs
mailing list