Bug 1798 – Equalization does not recall "curves" with a vertical component

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Audacity 3.0.3 development began 19th April 2021

Audacity Bugzilla

Bug 1798 - Equalization does not recall "curves" with a vertical component


Summary:	Equalization does not recall "curves" with a vertical component

Status:	CLOSED DUPLICATE of bug 1750

Product:	Audacity
Classification:	Unclassified
Component:	Built-in FX
Version:	unspecified
Hardware:	Per OS All

Importance:	P3 RepeatableAll
Assigned To:	Default Assignee for New Bugs

URL:
Keywords:

Depends on:
Blocks:
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Reported:	2017-12-05 06:14 UTC by Peter Sampson
Modified:	2018-09-10 07:28 UTC (History)
CC List:	6 users (show)

See Also:
Steps To Reproduce:	1) get some audio 2) Effect > Equalization 3) set a "curve" with a horizontal, a true vertical and a horizontal 4) apply then effect with the OK 5) Effect > Equalization 6) observe that the shape from step 3 is not "recalled" by Audacity - all you see is one horizontal line
Release Note:	Group: Effects *In the Equalization effect if you create a "curve" with a vertical segment, then that vertical segment will not be recalled properly by Audacity when you next use the effect. Also note that you cannot use the "Manage" or the "Save/Manage Curves" - as these will exhibit the same corruption of the curve.
First Git SHA:
Group:	---
Workaround:
Closed:	2018-09-10 00:00:00

Flags:	petersampsonaudacity: Regression+

Attachments
right-angular curve at Step 3 (35.39 KB, image/png) 2017-12-05 06:20 UTC, Peter Sampson	Details
Errant flat-line curve at steps 5-6 (23.09 KB, image/png) 2017-12-05 06:21 UTC, Peter Sampson	Details
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Description Peter Sampson 2017-12-05 06:14:42 UTC

This is a regression on 2.1.3

It affects not just the simple use case in the steps to reproduce, but also in any EQ curve you make that has a true vertical component somewhere.

Also impacts the stored curves using user presets in "Manage" or in "Save/Manage Curves" which are not stored/retrieved properly.

Affects both W10 and macOS 10.13.1 - so assume "All"

Comment 1 Peter Sampson 2017-12-05 06:20:45 UTC

Created attachment 743 [details]
right-angular curve at Step 3

Comment 2 Peter Sampson 2017-12-05 06:21:14 UTC

Created attachment 744 [details]
Errant flat-line curve at steps 5-6

Comment 3 Peter Sampson 2017-12-05 08:24:18 UTC

I promoted this to P3 (marginal P2 I'm thinking) because the user has no way to save the "curve", not with the Audacity "remember" nor with either of the save curves functions - and thus they would need to recreate each time.

Plus the fact that this is a relatively recent regression.

Comment 4 Bill Wharrie 2017-12-05 11:35:45 UTC

This is a duplicate of bug 1750 . We should retain one or the other.

Comment 5 Peter Sampson 2017-12-05 13:09:28 UTC

*** This bug has been marked as a duplicate of bug 1750 ***

Comment 6 James Crook 2018-09-10 07:27:53 UTC

*** This bug has been marked as a duplicate of bug 1750 ***