Delay between streams with multiple soundcards
Bug #726894 reported by
samotham
This bug affects 3 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Mixxx |
Fix Released
|
High
|
Daniel Schürmann | ||
1.10 |
Won't Fix
|
High
|
Unassigned | ||
1.9 |
Won't Fix
|
High
|
Unassigned |
Bug Description
my internal soundcard is 44100 Hz, my external is 48000 Hz.
When I try to use both at the same time (int : headphones, ext : master or reversed), there is a small delay between the 2 streams. Which makes this brand new promising option with 1.9 version unworkable for me at the moment.
my 2 cards are :
0 [A5451 ]: ALI5451 - ALI 5451
1 [Aureon51MkII ]: USB-Audio - Aureon5.1MkII
Intel(R) Pentium(R) 4 CPU 2.80GHz
Changed in mixxx: | |
milestone: | none → 1.9.1 |
Changed in mixxx: | |
milestone: | 1.9.2 → none |
tags: | added: multi-soundcard |
Changed in mixxx: | |
status: | New → Triaged |
importance: | Undecided → High |
tags: | added: needs-triage |
summary: |
- soundcards with different sample rates - no sync + Delay between streams with multiple soundcards |
Changed in mixxx: | |
status: | Fix Committed → Fix Released |
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Hi Samotham,
When we open each of your soundcards, we open them at identical sample-rates. In general, when a soundcard's sample-rate is represented as a metric, that indicates the maximum sample-rate of the soundcard.
However, there is an issue with our multiple-soundcard support which if you are using two soundcards with slightly different crystals, they will both have a different sense of what 44100Hz is (for example). This is probably the reason that you are hearing a delay.
Have you tried this setup with other DJ software? Did the same problem exist then?
We are evaluating potential ways to compensate for sync-issues like this but we don't have anything for you to try at the moment. I'll let you know as things progress.
Thanks for taking the time to file a bug,
RJ Ryan