Ubuntu
speech-dispatcher package

Speech-dispatcher requests ridiculously low latency

Bug #1208826 reported by David Henningsson on 2013-08-06

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	speech-dispatcher (Ubuntu)	Fix Released	Undecided	Unassigned

Bug Description

Looking at PulseAudio logs, it seems speech-dispatcher requests a total latency of 1 ms, which in turn gives sub-ms latency inside the PulseAudio engine.
This causes unnecessary CPU consumption, or underruns. I understand that you would want immediate feedback, but wouldn't 10 ms or 20 ms be more reasonable?

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: speech-dispatcher 0.7.1-6.1ubuntu2
ProcVersionSignature: Ubuntu 3.10.0-6.17-generic 3.10.3
Uname: Linux 3.10.0-6-generic x86_64
ApportVersion: 2.12-0ubuntu2
Architecture: amd64
Date: Tue Aug 6 14:17:55 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-05-08 (89 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130508)
MarkForUpload: True
SourcePackage: speech-dispatcher
UpgradeStatus: No upgrade log present (probably fresh install)

Tags:

Related branches

lp:ubuntu/saucy-proposed/speech-dispatcher

lp:ubuntu/trusty-proposed/speech-dispatcher

lp:debian/experimental/speech-dispatcher

Revision history for this message

David Henningsson (diwic) wrote on 2013-08-06:

Dependencies.txt Edit (4.0 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (316 bytes, text/plain; charset="utf-8")

Revision history for this message

David Henningsson (diwic) wrote on 2013-08-06:

debdiff.patch Edit (2.5 KiB, text/plain)

Hi Luke,

Could you test this patch and sponsor/upstream it if you find it not causing any regression on your side?

Ubuntu Foundations Team Bug Bot (crichton) on 2013-08-06

tags:

added: patch

Revision history for this message

Launchpad Janitor (janitor) wrote on 2013-08-27:

This bug was fixed in the package speech-dispatcher - 0.7.1-6.1ubuntu3

---------------
speech-dispatcher (0.7.1-6.1ubuntu3) saucy; urgency=low

* debian/patches/pulse-default-latency.patch:
Default to 20 ms latency instead of 1 ms latency (LP: #1208826)

[ Jason White ]
* Raise level of subsection in fdl.texi to correct document structure.

  [ Luke Yelavich ]
  * Fix some compiler warnings
  * FIx python 3 bindings install path
-- Luke Yelavich <email address hidden> Wed, 28 Aug 2013 05:32:34 +1000