View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0005781 | ardour | bugs | public | 2013-12-02 13:07 | 2020-04-19 20:16 |
| Reporter | herr_doktor | Assigned To | paul | ||
| Priority | high | Severity | major | Reproducibility | always |
| Status | closed | Resolution | fixed | ||
| Product Version | 3.0 | ||||
| Summary | 0005781: error in latency compensation | ||||
| Description | Play, then stop, then click backward in the time line, then play: no latency compensation error. Play, then click backward in the time line without clicking stop before so that play is still engaged: latency compensation error. | ||||
| Additional Information | Ardour 3.4 without VST support, as found in AV Linux. 6 instances of calf fluidsynth, 3 guitar wave tracks, each with amp emulation and IR, one bass wave track with calf comp, IR and 10 band eq. The compensation error is about 50ms (detail: one of the impulses is 0,054 second long, so, it seems to me that not all the instances of Tom Szilgyi's IR are taken into account. Maybe so, maybe not...). | ||||
| Tags | No tags attached. | ||||
| related to | 0006461 | feedback | XT-VC latency |
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To recreate: Add 2 tracks, each with the same playlist. Invert one track so you hear silence. Add a plugin that adds latency, AND correctly reports it ( I use Harrison XT-LC Lookahead compressor ) Start playback; then click on the timeline to locate back OR Initiate loop playback. In either case, the first play-through will be correctly latency-compensated. But after the locate, you will hear doubling. |
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yes, known issue. still in current 4.2 A track's playback offset is only [re]-calculated at "stop". Loop playback fails for the same reason. The idea behind re-calculate latency at "play/stop" was that "plugins do not change their latency while playing". Ardour sets up a fixed offset for disk-read/playback buffer. This is not correct when seeking or looping. A simple plugin to test with phase-invert is: https://github.com/x42/nodelay.lv2 |
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fixed in Ardour 4.2-478-g4a31b03, please test |
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Ok for me, it fits. Sorry for being so long to confirm the fix... |
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see notes. |
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Issue has been closed automatically, by Trigger Close Plugin. Feel free to re-open with additional information if you think the issue is not resolved. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2013-12-02 13:07 | herr_doktor | New Issue | |
| 2015-09-11 20:00 | BenLoftis | Note Added: 0017184 | |
| 2015-09-11 20:01 | BenLoftis | Priority | normal => high |
| 2015-09-11 20:01 | BenLoftis | Severity | minor => major |
| 2015-09-13 12:52 | x42 | Note Added: 0017187 | |
| 2015-09-27 21:26 | x42 | Relationship added | related to 0006461 |
| 2015-10-01 21:24 | x42 | Note Added: 0017408 | |
| 2015-10-01 21:24 | x42 | Status | new => feedback |
| 2016-02-07 19:43 | herr_doktor | Note Added: 0017890 | |
| 2016-02-07 19:43 | herr_doktor | Status | feedback => new |
| 2016-03-08 13:53 | paul | Note Added: 0018047 | |
| 2016-03-08 13:53 | paul | Status | new => resolved |
| 2016-03-08 13:53 | paul | Resolution | open => fixed |
| 2016-03-08 13:53 | paul | Assigned To | => paul |
| 2020-04-19 20:16 | system | Note Added: 0023293 | |
| 2020-04-19 20:16 | system | Status | resolved => closed |
