From: Eric Wong <firstname.lastname@example.org> To: Rene Maurer <email@example.com> Cc: firstname.lastname@example.org Subject: Re: Adding fade effect Date: Wed, 14 Jan 2015 09:06:46 +0000 [thread overview] Message-ID: <20150114090646.GA6753@dcvr.yhbt.net> (raw) In-Reply-To: <20150114055654.517bf6a6@loco5> Rene Maurer <email@example.com> wrote: > Eric Wong <firstname.lastname@example.org> wrote: > > > command: exec sox "$INFILE" $SOXFMT - $TRIMFX fade 0 =0 5 > > > > I think the above fade example requires sox 14.4.x and later, > > I have SoX v14.4.1 but the "=0 syntax" isn't supported. > Surprisingly doing just > > command: exec sox "$INFILE" $SOXFMT - $TRIMFX fade 0 5 5 > > on a playing song starts fade out immediate and does the job (fade out > current song) as desired! Ah, OK, I didn't realize you wanted you wanted to fade out immediately (as opposed to fadiing out the last few seconds of every song as is typical for some radio stations). > > if you're using an older version you'll probably need to calculate > > the "=0" offset based on the length of the track itself, but > > also need to take into account the offset set by the $TRIMFX > > variable (if you're seeking) > > This was my first idea but as already said, this seams not to be > necessary... OK, I thought you wanted something like a crossfade effect in MPD where you fade out every song. However, fade-in does not seem to work right if seeking. But just trying "fade 5 =0 5" seems to work right as long as you do not seek, it just sounds horrible with a lot of silence :< > > Again, I recommend editing the source instead of the sink as it won't > > restart the device and for most effects, there won't be an audible > > gap. > > Done. It works well! > > The documentation http://dtas.80x24.org/dtas-player_effects.txt brought > me on the wrong way: > > ,---- > | 1. source effects > | > | - anything which does not change the length of the audio > `---- Ah, a few lines below, there is: Effects which modify the length of the audio is not recommended here, as seek functionality will be impaired. I can make the following change (wording suggestions appreciated!): --- a/Documentation/dtas-player_effects.txt +++ b/Documentation/dtas-player_effects.txt @@ -10,6 +10,7 @@ They are applied in the order described. - ReplayGain (simple vol/gain changes) - anything which does not change the length of the audio: vol, stereo, highpass, lowpass, loudness, bass, treble, equalizer, ... + - ...or the fade effect for fading tracks out. Modifying source effects should introduce no extra gaps in playback. Effects which modify the length of the audio is not recommended here, -- EW
prev parent reply other threads:[~2015-01-14 9:06 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-01-12 11:23 Rene Maurer 2015-01-12 22:01 ` Eric Wong 2015-01-14 4:56 ` Rene Maurer 2015-01-14 9:06 ` Eric Wong [this message]
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