From 13839fda627b343fff96b2e546f246e28a777f3c Mon Sep 17 00:00:00 2001 From: Albert Graef Date: Mon, 22 Jul 2024 13:26:11 +0200 Subject: [PATCH] Overhaul of lua_sig example. --- pdlua/examples/sig-example/lua_sig-test.pd | 27 +++++++++++----------- pdlua/examples/sig-example/lua_sig.pd_lua | 25 ++++++++++++-------- 2 files changed, 28 insertions(+), 24 deletions(-) diff --git a/pdlua/examples/sig-example/lua_sig-test.pd b/pdlua/examples/sig-example/lua_sig-test.pd index de407f3..0bc897d 100644 --- a/pdlua/examples/sig-example/lua_sig-test.pd +++ b/pdlua/examples/sig-example/lua_sig-test.pd @@ -1,27 +1,24 @@ #N canvas 491 594 588 300 12; -#X obj 84 148 lua_sig; +#X obj 84 178 lua_sig; #X floatatom 162 52 5 0 0 0 - - - 0; #X floatatom 232 52 5 0 0 0 - - - 0; #N canvas 0 50 450 250 (subpatch) 0; -#X array scope 4800 float 1; -#A 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0; 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-#X coords 0 1 4800 -1 200 140 1; +#X array scope 4800 float 0; +#X coords 0 1 4799 -1 200 140 1 0 0; #X restore 316 74 graph; -#X obj 218 149 tgl 20 0 empty empty empty 0 -10 0 12 #fcfcfc #000000 #000000 0 1; -#X obj 218 174 metro 100; +#X obj 218 179 tgl 20 0 empty empty empty 0 -10 0 12 #fcfcfc #000000 #000000 0 1; +#X obj 218 204 metro 100; #X floatatom 85 22 5 0 0 0 - - - 0; -#X obj 83 203 tabwrite~ scope; -#X obj 35 203 dac~; +#X obj 83 233 tabwrite~ scope; +#X obj 35 233 dac~; #X obj 85 52 osc~ 110; #X obj 162 101 line; #X obj 232 101 line; #X msg 162 76 \$1 50 1; #X msg 232 76 \$1 50 1; #X obj 232 21 tgl 20 0 empty empty empty 0 -10 0 12 #fcfcfc #000000 #000000 0 0.1; +#X msg 162 132 freq \$1; +#X msg 232 131 amp \$1; #X connect 0 0 7 0; #X connect 0 0 8 0; #X connect 0 0 8 1; @@ -31,8 +28,10 @@ #X connect 5 0 7 0; #X connect 6 0 9 0; #X connect 9 0 0 0; -#X connect 10 0 0 1; -#X connect 11 0 0 2; +#X connect 10 0 15 0; +#X connect 11 0 16 0; #X connect 12 0 10 0; #X connect 13 0 11 0; #X connect 14 0 2 0; +#X connect 15 0 0 0; +#X connect 16 0 0 0; diff --git a/pdlua/examples/sig-example/lua_sig.pd_lua b/pdlua/examples/sig-example/lua_sig.pd_lua index 928e191..dec69c4 100644 --- a/pdlua/examples/sig-example/lua_sig.pd_lua +++ b/pdlua/examples/sig-example/lua_sig.pd_lua @@ -1,7 +1,7 @@ local lua_sig = pd.Class:new():register("lua_sig") function lua_sig:initialize(sel, atoms) - self.inlets = {SIGNAL, DATA, DATA} + self.inlets = {SIGNAL} self.outlets = {SIGNAL} self.phase = 0 self.freq = 220 @@ -9,29 +9,34 @@ function lua_sig:initialize(sel, atoms) return true end -function lua_sig:in_2_float(freq) - self.freq = freq +-- dsp method is called when processing is about to start +function lua_sig:dsp(samplerate, blocksize) + self.samplerate = samplerate end -function lua_sig:in_3_float(amp) - self.amp = amp +-- message to set frequency... +function lua_sig:in_1_freq(atoms) + self.freq = atoms[1] end --- dsp method is called when processing is about to start -function lua_sig:dsp(samplerate, blocksize) - self.samplerate = samplerate +-- ... and amplitude. +function lua_sig:in_1_amp(atoms) + self.amp = atoms[1] end -- perform method gets called with a table for each signal inlet -- you must return a table for each signal outlet function lua_sig:perform(in1) - local frequency = self.freq - local amplitude = self.amp + local frequency = self.freq -- frequency of the sine wave in Hz + local amplitude = self.amp -- amplitude of the sine wave (0 to 1) + -- Calculate the angular frequency (in radians per sample) local angular_freq = 2 * math.pi * frequency / self.samplerate -- Loop through each sample index for i = 1, #in1 do + -- NOTE: We ignore the input signal in this example. Try multiplying by + -- in1[i] for an amplitude/ring modulation effect. in1[i] = amplitude * math.sin(self.phase) self.phase = self.phase + angular_freq if self.phase >= 2 * math.pi then