qwavfade
fade in/out wav files
qwavfade
option...
file...
qwavfade
modifies a wav file applying on it a fade in or a fade out or both.
a fade consists in modifying progressively the level of the wav as if you were slowly increasing or decreasing the volume. a fade in consists in increasing the volume starting from a low level at the beginning of the wav. a fade out consists in decreasing the volume to a low level at the end of the wav.
-d
cutpoint
--duration=
cutpoint
--length
option explained below.
-h
--help
-i
--in
-l
time
--length=
time
--duration
option above. it's easier to use though not as powerful than the previous one. the default value is five seconds. this option overrides --duration
option explained above.
-o
--out
-t
--test
fadein.
file
or fadeout.
file
. the duration of the test files is the fade duration plus five seconds.
-v
--verbose
-V
--version
suppose you want to fade in and out the fantastic song live.in.concert.wav
using a fade duration of 3.5 seconds:
first we are going to test:
qwavfade --test --length 3.5 live.in.concert.wav
hear the test fades:
my-wav-player fadein.live.in.concert.wav fadeout.live.in.concert.wav
if you want to try with another duration, jump to the first step and change the length
(or --duration
) argument.
if you're happy with the tests (omit --test
):
qwavfade --length 3.5 live.in.concert.wav
qwavfade
doesn't allow both types of fades (in and out) to overlap. if you want to fade in and out a wav file, and the two regions to fade overlap, then probably you made a mistake (maybe you selected a too large fade). in any case, you'll have to fade separately.