Thanks. So the pdf Manual for “Equalizer” gives the “turnovers” (treble, bass, lower bass) for these as:
- Westrex: -, 200,-
HMV/Blumlein: -, 250, 20
ffrr 78: 6360, 300, 40
Decca 78: 3400, 150, –
Columbia: 1600, 300, – - BSI: 3180, 353, 50
- US Mid 30: –, 400, 70
The 10 kHz rolloff would need calculating for the 78 rpm generator, but we know the rolloffs from Wiki 78 RPM playback curves except for the “US Mid 30s”.
I have a feeling that four/five curves is the most that’s likely to be acceptable in the default curves list if even that, and the starred ones in the list above are likely to be dispensable.
I’m attaching v4 of the 78 EQ Curve Generator in which I’ve done all the points mentioned since v3 except the code cleanup to remove superfluous variables in the final line of functions.
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;info line is now standard format “By Paraic O’Lochlainn. Released under GPL v2.” and says “writes it to an xml file for import into Effect > Equalization.”
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I thought that “Home directory” looked better in the interface than “home directory”, so “Valid File Output Folder” on the interface has a second line “(default is Home directory)”, the text in the input box and the help now says “Home directory” and the error checking checks for that text
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ERROR WRITING OUTPUT FILE says “Check that the File Name and Output Folder are valid and that you have permission to write to that path.”
Gale
78EQCurveGen_v4_20110119.ny (16.1 KB)