View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000098 | ardour | bugs | public | 2003-10-26 22:47 | 2003-11-21 18:51 |
| Reporter | mistatapas | Assigned To | paul | ||
| Priority | normal | Severity | feature | Reproducibility | always |
| Status | closed | Resolution | duplicate | ||
| Summary | 0000098: compensation for playback latency in recording not working as expected | ||||
| Description | Ok, first i explain my setup a bit: Soundcard: terratec dmx xfire 1024 [alsa 0.9.8] Jack: 0.80 [started with jackd -R -d alsa -d hw:0 -p 512 -n 20. I give it 20 periods, because latency is not an issue for me. i want no xruns whatsoever. period size seems to be fixed to 512 with the alsa driver, so increasing buffer size is only possible with increasing the number of periods] Ardour: 0.9beta6 Task: Record a guitar backing track and then a solo track External Connections: guitar into simple mixer, mixer into line in of the soundcard. Then in alsamixer i selected line in as the capture source.. Problem: Recording the backing track works fine. no xruns, etc.. But recording the solo track has the problem that it gets recorded with around 10700 frames delay [20 periods * 512 frames = 10240 _plus_ [maybe] 512 frames input buffer]. This produces an audible offset when playing back both tracks. I verified the number of frames by recording the clicktrack of ardour and comparing it to the _real_ measure boundaries. | ||||
| Tags | No tags attached. | ||||
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oops, wrongly clasified as severity "feature". should be "bug" i suppose.. |
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With fewer periods, the offset gets smaller, but is still there.. |
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I also forgot to mention, that initially i used a debian package of ardour. With the 0.9beta6 the offset is reduced to around 10240 frames [with 20 periods of size 512]. So maybe that helps. |
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since this is a duplicate i can as well close it.. though i didn;t find the other report describing the prob. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2003-10-26 22:47 | mistatapas | New Issue | |
| 2003-10-26 22:48 | mistatapas | Note Added: 0000107 | |
| 2003-10-26 22:49 | mistatapas | Note Added: 0000108 | |
| 2003-10-27 02:16 | mistatapas | Note Added: 0000109 | |
| 2003-11-12 18:06 | paul | Status | new => resolved |
| 2003-11-12 18:06 | paul | Resolution | open => duplicate |
| 2003-11-12 18:06 | paul | Assigned To | => paul |
| 2003-11-21 18:51 | mistatapas | Status | resolved => closed |
| 2003-11-21 18:51 | mistatapas | Note Added: 0000192 |
