Streams in pulseaudio often play a bit slow or a bit fast
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
pulseaudio (Ubuntu) |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
I frequently find that audio streams in pulseaudio are playing at the wrong speed. They are either a bit slow or a bit fast. To my ears I would say that the difference in pitch is probably around one tone, or somewhere around the ratio of 44100Hz to 48000Hz. Killing pulseaudio and letting it get respawned usually fixes the problem.
My main audio hardware is a Focusrite Scarlett 2i2.
Example: I have just tried to play a 44100Hz MP3 in Audacious. It came out a bit slower and flatter than it should. I ran "pulseaudio -k" and then tried again. This time it played at the right speed.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu11
ProcVersionSign
Uname: Linux 3.13.0-
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: XFCE
Date: Sat May 3 23:12:28 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-08-22 (254 days ago)
InstallationMedia: Ubuntu-Studio 13.04 "Raring Ringtail" - Release amd64 (20130424)
SourcePackage: pulseaudio
UpgradeStatus: Upgraded to trusty on 2014-04-22 (11 days ago)
dmi.bios.date: 06/28/2007
dmi.bios.vendor: LENOVO
dmi.bios.version: 7OET24WW (1.03 )
dmi.board.name: 8932A11
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 8932A11
dmi.product.
dmi.sys.vendor: LENOVO
is this related to another pulseaudio client PEAK DETECT running at 25 Hz to monitor the playback ?
driver: <protocol-native.c> usb-Focusrite_ Scarlett_ 2i2_USB- 00-USB. analog- stereo. monitor>
flags: DONT_MOVE
state: RUNNING
source: 3 <alsa_output.
volume: 0: 100%
0: 0.00 dB
balance 0.00
muted: no
current latency: 15.89 ms
requested latency: 20.00 ms
sample spec: float32le 1ch 25Hz