In article , RJH
wrote:

Thanks for that - interesting. FWIW I used to (haven't done it in a
while) open the file in (say) Audacity and take out clicks and pops by
eye using the draw tool, and flattening the spikes. especially effective
in lead-in/run-out.

Will certainly give your method a try when and if, though. I'm wondering
if the Repair command is a recent addition . . .

I've been using it for some years now, so I doubt it is very recent. You
may have to look for it in a submenu, though. Afraid I've forgotten where
it is in the GUI menus. I map it to the ' ctrl R' keys for convenience.

Where needed: For reducing noise during leadin / etc I tend to use the
'Amplify' effect with a gain of, say, -70dB. Then apply a fade in or fade
out at the boundaries between this and sections of music to avoid any
abrupt level changes.

I have occasionally used the 'hand draw', but don't really have much
confidence in that. But if the crunch has a very long duration I tend to
sigh and snip it out. Then do a 'repair' over the join to smooth it. This
is quite rarely needed, though.

FWIW when I snip a section I try to find start and end points which are a
few cycles apart and have - ideally - the same amplitudes and slopes either
side of the removed section. This also helps avoid any clicks or bumps at
the join.

I have thought/hoped that Audacity might have some way to base a repair of
one channel on the other channel's waveform. Sometimes a click or bang is
only on one channel and that might produce a decent result. e.g. on a mono
disc. But I've not found such a tool. So this would need to be done by
other means.

Alas, I don't have the luxury of multiple versions of an LP. Just the 3
quid ones I bought recently, or my own ancient ones. I'm sure a pro would
do a better job. But it still often makes a real difference, so worth
doing.

Jim

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