Bugzilla – Bug 1721
EQ effect in Graphic mode does not display the chosen preset curve name
Last modified: 2019-05-15 04:39:10 UTC
Equalization effect in Graphic mode enables you to selct preset named curves which are displayed correctly but it does not display the chosen preset curve name, instead "unnamed" remains as the curve name. Tested on latest Windows and Mac nightlies - happens on both, so assume All. I did not mark this a regression as there appears to be different erroneous behavior in 2.1.3 AFAICT.
(In reply to Peter Sampson from comment #0) See the steps to reproduce and Release Note for further subleties of this behavior
(In reply to Peter Sampson from comment #1) I remember having a conversation with one of the developers about this very behaviour. As I recall, this is not a bug. The issue is that a drawn curve cannot be exactly represented in graphic mode. In your example of the RIAA curve it appears that the curve drawn in graphic and draw modes are the same. A close examination shows that the curves are not identical. For a more extreme example, try this 1) get and select some audio 2) Effect > Equalization 3) Draw mode 4) Select "Telephone" curve (if it doesn't show, select "Telephone" again) 5) Drag slider for the "below 0 dB scale" down so that bottom of left scale is -96dB or so 6) Switch to graphic mode Observe that the curve is unlike the draw version, so it is appropriate that it is no longer named "Telephone" 7) Switch to draw mode Observe that the curve maintains the "graphic mode" shape, but the name has remained "untitled", as it should. So, not-a-bug, but if what I've said is true it should probably be documented in the manual.
(In reply to Bill Wharrie from comment #2) Ah, I see this is already covered in the manual: https://alphamanual.audacityteam.org/man/Equalization#settings I've added a green note div to highlight it.
(In reply to Bill Wharrie from comment #2) In which case, maybe we should not be allowing users to use the pre-set curves when using graphic mode (and maybe that would include user curves if thay cannot be expressed accurately in Graphic mode - especially user curves that were created in Draw mode.
Changing this to P4 Enh because it is not a bug and the current behaviour is properly documented in the manual. If someone else thinks this should be CLOSED - INVALID/WONTFIX I would support that.
Testing on W10 with 2.3.2 when using the "Save/Manage Curves" button to change the curve (both pre-defined and user-defined) in both Draw Mode and Graphic mode the selected curve name is properly displayed. The related issue is that if the user also uses curves saved und the newer "Manage" button then these names do not display - but more importantly the curve does not get deployed. But this is the essence of Bug #2031 >P2 2031: Equalization: presets under the Manage button do not save custom EQ curves and is thus a separate issue - that needs to be dealt with separately The bug as defined in the title is RESOLVED AFAICT - thus I shall close this bug.
