Trance Gate Effect

[markheath]

Hi, I have made a very basic JS trance gate effect. You can separately control the pattern for left and right, adjust the pulse width, and create different feels by adjusting the pattern steps per beat. There is a rudimentary graphical display to help demonstrate what the sliders are doing.

It currently re-triggers itself on every beat. I am trying to decide whether it should just do this on beat 0 instead. Any thoughts? (BTW Justin, did you realise that if you have the word "trigger" in a comment, it makes the trigger buttons appear even if you are not using the trigger variable?)

Updated:



Download v0.4 from REAPER stash.

Mark

[markheath]

I've made a slight update. There is an additional pattern length slider and the pattern slider bit order is reversed which should make it a bit more intuitive. I've also slightly adjusted the range of the sliders.

I have left it retriggering on every beat. I had originally assumed that beat_position went back to 0.0 at the start of every measure, but it constantly goes up, leaving no way that I know of to detect the start of a new measure. (that will teach me not to test my effect with a single measure looping!).

The download location is the same as before.

[zappadave]

Thanks Mark, this works like a charm.
Works better at slower speeds, nice and easy to adjust.
I'm at Bannister Park by the way.

[RunBeerRun]

Looks pretty cool, I'll check it out fully soon.

[ArdeII]

Thanks Mark. It is very very cool.
It would be nice if one could create patterns with mouse by clicking the pattern view.

[markheath]

Originally Posted by zappadave

Thanks Mark, this works like a charm.
Works better at slower speeds, nice and easy to adjust.
I'm at Bannister Park by the way.

thanks zappadave, I'm in Bitterne. Yes, I have found the pulse width is only really worth using with pattern lengths of 4.

Originally Posted by ArdeII

Thanks Mark. It is very very cool.
It would be nice if one could create patterns with mouse by clicking the pattern view.

Yes, I might see if I can add that when I get some free time. It shouldn't be too hard.

[markheath]

I've added mouse handling now, so it is much easier to set patterns. Download link is the same (see first post)

Mark

[matey]

thanx so much Markheat, great effort..

[RunBeerRun]

The mouse draw stuff is nice, I also like the sliders for a more randomized result.

[drew]

Superb contribution!

Respect from M27 near Junction 6 (jus' kiddin')

Nice work sir

[pipelineaudio]

Thank you thank you thank you thank you~!!!!!!!!!!!!!!!!!!!!

This song would have taken me HOURS less work with your plugin...

https://stash.reaper.fm/oldsb/92133/K...ggest-Fear.mp3

can you time travel back a bit so I can get the hours back?

[pipelineaudio]

Could we get a time multiplier/divider knob defaulted at x1 that can be used to set the delay time in larger or smaller divisions of the tempo?

Also a wet/dry knob?

Thanks a billion either way! this is awesome

[sceyefeye]

thanks for this Mark

just downloaded to try it out. I am sure this is going to be really useful

[bfloyd6969]

Please help, where do I download this into Reaper? Thanks.

[markheath]

JS Effects live in the Effects folder under your REAPER installation. For example:
C:\Program Files\REAPER\Effects

Create a subfolder under Effects, (I called mine MarkHeath) and copy the downloaded text file into it. Then get rid of the .txt extension. Then reload REAPER and it should be available to select in the effect dialog.

Mark

[markheath]

Originally Posted by pipelineaudio

Could we get a time multiplier/divider knob defaulted at x1 that can be used to set the delay time in larger or smaller divisions of the tempo?

Also a wet/dry knob?

Thanks a billion either way! this is awesome

Glad you found it useful. The wet/dry knob is a good idea. The time multiplier might be a bit more tricky because of the way resync is done. I suppose I could do a version that was free-running after it had synced for the first time, which would probably be fine for 99% of projects which don't have tempo changes in them.

Next time I'm in the mood for editing it, I'll see if I can put your ideas in.

Mark

[Jae.Thomas]

THIS IS AWESOME !!!!

thank you !!!!

can we have a longer graphical display showing more beats?

this is perfect@@@@@!!!

[liteon]

Good stuff sir!

[markheath]

OK, so I've finally got round to updating this. You can now have many more steps (up to 64). Beat markers make it a little more obvious what is going on. There is also a wet/dry slider as requested by pipelineaudio (two years ago - sorry!). It uses the @serialize feature to save state. I haven't currently worked out how get it to flag that non-slider state needs to be changed so you won't see [modified] in the REAPER title bar after changing the pattern. Fortunately, if you click save the state is serialized regardless.



Download v0.4 from REAPER stash.

[beatbybit]

do you know LOSER's EQ Ducker?

that can be used as a 'tranceGate', (GATE mode) it needs a MIDI item to trigger.
so it can have swing, diff note/gate lenghts, velocity/volume.

patterns/MIDI items can be multitaked, so switching or modify the gate pattern is easy.

[markheath]

Originally Posted by beatbybit

do you know LOSER's EQ Ducker?

Looks a very impressive effect. Mine is less ambitious, and just lets you define a simple left and right pattern (slice volumes and swing may come in a later version if I ever have need of them). You can automate the pulse width though, which can give some nice results and would be a little harder to do with midi clips controlling the gate.

[IXix]

I missed this one, going to give it a try.

I have left it retriggering on every beat. I had originally assumed that beat_position went back to 0.0 at the start of every measure, but it constantly goes up, leaving no way that I know of to detect the start of a new measure.

Did you see that they added vars ts_num and ts_denom so you can find the time signature? I don't think they've been added to the documentation. To check for the start of a measure just do this...

beat_position % ts_num == 0 ?
(
    // retrig!
);

edit: btw, the download link is wrong. It should be https://stash.reaper.fm/v/8619/trance_0_4.txt

[markheath]

Originally Posted by IXix

Did you see that they added vars ts_num and ts_denom so you can find the time signature? I don't think they've been added to the documentation. To check for the start of a measure just do this...

No, didn't know about that one, although I now retrigger after the specified number of beats have elapsed, so just set pattern beats to ts_num yourself, or to a different value if you want interesting changes of rhythmic structure through your song.

edit: btw, the download link is wrong. It should be https://stash.reaper.fm/v/8619/trance_0_4.txt

Yeah that's the direct link. But would be nice for more people to vote and comment on stuff on the reaper stash. Its quite hard to work out what is worth downloading at the moment.

[IXix]

Originally Posted by markheath

No, didn't know about that one, although I now retrigger after the specified number of beats have elapsed, so just set pattern beats to ts_num yourself, or to a different value if you want interesting changes of rhythmic structure through your song.

Yeah that's probably better anyway.

Yeah that's the direct link. But would be nice for more people to vote and comment on stuff on the reaper stash. Its quite hard to work out what is worth downloading at the moment.

No, the link you posted above (https://stash.reaper.fm/manage_file/8619/trance_0_4.txt) is to manage the file, so when I click it I get taken to the stash index page because I don't have permissions to manage the file. The link I posted takes you to the file's page where you can leave comments and stuff.

Edit: No, I'm wrong. You can't leave comments on that page.

Edit again: Oh no, I'm wrong again. You have to log in to leave a comment

[markheath]

Originally Posted by IXix

Yeah that's probably better anyway.


No, the link you posted above (https://stash.reaper.fm/manage_file/8619/trance_0_4.txt) is to manage the file, so when I click it I get taken to the stash index page because I don't have permissions to manage the file. The link I posted takes you to the file's page where you can leave comments and stuff.

Edit: No, I'm wrong. You can't leave comments on that page.

OK I see now, I should have linked to https://stash.reaper.fm/v/8619/trance_0_4.txt. I'll update my posts. thanks

[IXix]

Cool effect btw

[SiKo]

Very nice basic trance gate.

About finding it a bit late: I guess some threads need to be resurrected once in a while.

[adeser]

I know this thread is old. I just came across this plugin looking for a fast way to do the "sidechain" effect. This plug works but I don't want to gate all the signal, so I found useful the dry/wet slider.
The problem is that I think there is a bug that causes the dry audio is only on the left channel.
How can we fix that ?
Right now I'm trying to troubleshoot it myself editing the code.

[witti]

This might work:
(also added ext_noinit = 1; as i thought it was needed)

slider1:4<1,8,1>pattern steps per beat
slider2:0.9<0,1,0.01>pulse width
slider3:2<1,8,1>pattern beats
slider4:100<0,100,1>wet/dry mix

@init
ext_noinit = 1;
secondspersample = 1/srate;
// buffer locations
pattern_left = 0;
pattern_right = 128;
freembuf(257);
(loaded == 0) ?
(
// set up the default pattern
pattern_left[0] = 1;
pattern_left[2] = 1;
pattern_left[3] = 1;
pattern_left[6] = 1;
pattern_left[8] = 1;
pattern_left[10] = 1;
pattern_left[12] = 1;
pattern_left[14] = 1;   
pattern_right[0] = 1;
pattern_right[2] = 1;
pattern_right[3] = 1;
pattern_right[5] = 1;
pattern_right[8] = 1;
pattern_right[10] = 1;
pattern_right[13] = 1;
pattern_right[15] = 1;
);

@slider
pattern_steps_per_beat=slider1;
pulsewidth=slider2;
slew_rate = 1; // in ms, used to be a slider
delta = secondspersample / (slew_rate / 1000);
pattern_beats = slider3;
pattern_length = pattern_beats * pattern_steps_per_beat;
mix = slider4/100;

@block
samplesperbeat = srate/(tempo/60);
samplesperslice = samplesperbeat / pattern_steps_per_beat;

@sample
inL=spl0;
inR=spl1;

current_slice = (beat_position * pattern_steps_per_beat)|0;
current_slice = current_slice % pattern_length;
(current_slice != last_slice) ? current_pos = 0; // retrigger
last_slice = current_slice;
slice_vol_left = pattern_left[current_slice];
slice_vol_right = pattern_right[current_slice];

// truncate the pulses if pulsewidth < 0
(slice_vol_left) ? (current_pos % samplesperslice) > (samplesperslice * pulsewidth) ? slice_vol_left = 0;
(slice_vol_right) ? (current_pos % samplesperslice) > (samplesperslice * pulsewidth) ? slice_vol_right = 0;

(multiplier_left < slice_vol_left) ? multiplier_left = min(1,multiplier_left+delta):
(multiplier_left > slice_vol_left) ? multiplier_left = max(0,multiplier_left-delta);

(multiplier_right < slice_vol_right) ? multiplier_right = min(1,multiplier_right+delta):
(multiplier_right > slice_vol_right) ? multiplier_right = max(0,multiplier_right-delta);

spl0 = inL * multiplier_left * mix;
spl1 = inR * multiplier_right * mix;
spl0 += inL * (1-mix);
spl1 += inR * (1-mix);

current_pos += 1;

@serialize
// dump out entire left and right volume arrays
amt=file_mem(handle,pattern_left,128);
amt=file_mem(handle,pattern_right,128);
((file_avail(0) >= 0) & (amt > 0)) ?
(
loaded = 1;
);

@gfx 320 60
gslice = 0;
gspace = 10;
gstartx = gspace;
gheight = 15;
gwidthmax = (120 * pattern_beats) / pattern_length; //30;
gleft_y = gspace + gheight;
gcurrent_y = gspace * 2 + gleft_y;
gright_y = gspace + gcurrent_y + gheight;

// has the left mouse button been pressed or released?
(mouse_cap != leftbutton_down) ? 
(
leftbutton_down = (mouse_cap == 1) ? 1 : 0;
(leftbutton_down) ? 
(
(mouse_x >= gstartx && mouse_x < gstartx + pattern_length * gwidthmax) ?
(
mouse_slice = ((mouse_x - gstartx) / gwidthmax)|0;
(mouse_y >= gleft_y - gheight && mouse_y < gleft_y) ? 
(
pattern_left[mouse_slice] = pattern_left[mouse_slice] ? 0 : 1;
// slider5 += 1; sliderchange(slider5); // attempt to prompt js that state needs to be saved
);
(mouse_y >= gright_y - gheight && mouse_y < gright_y) ? 
(
pattern_right[mouse_slice] = pattern_right[mouse_slice] ? 0 : 1;
// slider5 += 1; sliderchange(slider5); // attempt to prompt js that state needs to be saved
);
);
);
);

// draw the pattern
gfx_a = 1;
gslice = 0;
loop (pattern_length,
gtestbit = pow(2,7-gslice)|0;
gslice_vol_left = pattern_left[gslice];
gslice_vol_right = pattern_right[gslice];
gwidth = gwidthmax * pulsewidth;

gfx_r = 0.0; // 1
gfx_b = 0.0; // 0.33
gfx_g = 0.33; // 1

gfx_x = gstartX + gslice * gwidthmax;
gfx_y = gleft_y;
gslice_vol_left ? gfx_rectto(gfx_x + gwidth, gfx_y - gheight) : gfx_lineto(gfx_x + gwidth, gfx_y, 0);

gfx_x = gstartX + gslice * gwidthmax;
gfx_y = gright_y;
gslice_vol_right ? gfx_rectto(gfx_x + gwidth, gfx_y - gheight) : gfx_lineto(gfx_x + gwidth, gfx_y, 0);

// draw the current slice marker
(current_slice == gslice) ? 
(
gfx_r = 0.33;
gfx_b = 1;
gfx_g = 0.33;

gfx_x = gstartX + gslice * gwidthmax;
gfx_y = gcurrent_y;
gfx_rectto(gfx_x + gwidth, gfx_y - gspace);
);

gslice +=1;
);

gslice = 0;
loop (pattern_beats + 1,
// draw beat markers
gfx_r = 0.5;
gfx_b = 0.5;
gfx_g = 0.5;

gfx_x = gstartX - 2 + gslice * gwidthmax * pattern_steps_per_beat;
gfx_y = gleft_y + 5;
gfx_lineto(gfx_x, gright_y - gheight - 5, 0);

gslice += 1;
);