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# Translator: Michael Scholz <mi-scholz@users.sourceforge.net>
# Created: 02/11/20 02:24:34
# Changed: 14/11/23 03:36:55
# fm_violin(start, dur, freq, amp, *args)
# play_fm_violin(start, dur, freq, amp, *args)
# make_fm_violin(start, dur, freq, amp, *args)
# jc_reverb(*args)
require "ws"
v_opts_str = "fm_violin(start=0.0, dur=1.0, freq=440.0, amp=0.5, *args)
:fm_index = 1.0
:amp_env = [0, 0, 25, 1, 75, 1, 100, 0]
:periodic_vibrato_rate = 5.0
:random_vibrato_rate = 16.0
:periodic_vibrato_amp = 0.0025
:random_vibrato_amp = 0.005
:noise_amount = 0.0
:noise_freq = 1000.0
:ind_noise_freq = 10.0
:ind_noise_amount = 0.0
:amp_noise_freq = 20.0
:amp_noise_amount = 0.0
:gliss_env = [0, 0, 100, 0]
:gliss_amount = 0.0
:fm1_env = [0, 1, 25, 0.4, 75, 0.6, 100, 0]
:fm2_env = [0, 1, 25, 0.4, 75, 0.6, 100, 0]
:fm3_env = [0, 1, 25, 0.4, 75, 0.6, 100, 0]
:fm1_rat = 1.0
:fm2_rat = 3.0
:fm3_rat = 4.0
:fm1_index = false
:fm2_index = false
:fm3_index = false
:base = 1.0
:index_type = :violin"
add_help(:fm_violin,
"#{v_opts_str}
:reverb_amount = 0.01
:degree = kernel_rand(90.0)
:distance = 1.0
Ruby: fm_violin(0, 1, 440, 0.1, :fm_index, 2.0)
Scheme: (fm-violin 0 1 440 0.1 :fm-index 2.0)
Example: with_sound do fm_violin(0, 1, 440, 0.1, :fm_index, 2.0) end")
def fm_violin(start = 0.0, dur = 1.0, freq = 440.0, amp = 0.5, *args)
r = get_args(args, :reverb_amount, 0.01)
d = get_args(args, :degree, kernel_rand(90.0))
s = get_args(args, :distance, 1.0)
fm_vln = make_fm_violin_gen(start, dur, freq, amp, *args)
run_instrument(start, dur, :reverb_amount, r, :degree, d, :distance, s) do
fm_vln.call(0)
end
end
add_help(:play_fm_violin,
"play_#{v_opts_str}
Returns a fm_violin proc with no arg for play(proc).
v = play_fm_violin(0, 1, 440, 0.5)
play(v)
or
play(play_fm_violin(0, 1, 440, 0.5))")
def play_fm_violin(start = 0.0, dur = 1.0, freq = 440.0, amp = 0.5, *args)
fm_vln = make_fm_violin_gen(start, dur, freq, amp, *args)
len = seconds2samples(dur)
lambda do
(len -= 1).positive? and fm_vln.call(0)
end
end
#
# make_fm_violin: returns lambda do |y| ... end
#
add_help(:make_fm_violin,
"make_#{v_opts_str}
Returns a proc with one arg for map_channel()
*args are like fm_violin's
ins = new_sound(:file, \"fmv.snd\", :srate, 22050, :channels, 2)
# proc with one arg
fmv1 = make_fm_violin(0, 1, 440, 0.5)
map_channel(fmv1, 0, 22050, ins, 1)")
def make_fm_violin(start = 0.0, dur = 1.0, freq = 440.0, amp = 1.0, *args)
make_fm_violin_gen(start, dur, freq, amp, *args)
end
def make_fm_violin_gen(start, dur, freq, amp, *args)
fm_index, amp_env, periodic_vibrato_rate, random_vibrato_rate = nil
periodic_vibrato_amp, random_vibrato_amp, noise_amount, noise_freq = nil
ind_noise_freq, ind_noise_amount, amp_noise_freq, amp_noise_amount = nil
gliss_env, gliss_amount = nil
fm1_env, fm2_env, fm3_env, fm1_rat, fm2_rat, fm3_rat = nil
fm1_index, fm2_index, fm3_index, base, index_type = nil
optkey(args, binding,
[:fm_index, 1.0],
[:amp_env, [0, 0, 25, 1, 75, 1, 100, 0]],
[:periodic_vibrato_rate, 5.0],
[:random_vibrato_rate, 16.0],
[:periodic_vibrato_amp, 0.0025],
[:random_vibrato_amp, 0.005],
[:noise_amount, 0.0],
[:noise_freq, 1000.0],
[:ind_noise_freq, 10.0],
[:ind_noise_amount, 0.0],
[:amp_noise_freq, 20.0],
[:amp_noise_amount, 0.0],
[:gliss_env, [0, 0, 100, 0]],
[:gliss_amount, 0.0],
[:fm1_env, [0, 1, 25, 0.4, 75, 0.6, 100, 0]],
[:fm2_env, [0, 1, 25, 0.4, 75, 0.6, 100, 0]],
[:fm3_env, [0, 1, 25, 0.4, 75, 0.6, 100, 0]],
[:fm1_rat, 1.0],
[:fm2_rat, 3.0],
[:fm3_rat, 4.0],
[:fm1_index, false],
[:fm2_index, false],
[:fm3_index, false],
[:base, 1.0],
[:index_type, :violin])
frq_scl = hz2radians(freq)
modulate = fm_index.nonzero?
maxdev = frq_scl * fm_index
vln = (index_type == :violin or index_type == 1)
logfreq = log(freq)
sqrtfreq = sqrt(freq)
index1 = (fm1_index or [PI, maxdev * (vln ? 5.0 : 7.5) / logfreq].min)
index2 = (fm2_index or [PI, maxdev * 3.0 *
(vln ? ((8.5 - logfreq) / (3.0 + freq * 0.001)) :
(15.0 / sqrtfreq))].min)
index3 = (fm3_index or [PI, maxdev * (vln ? 4.0 : 8.0) / sqrtfreq].min)
easy_case = (noise_amount.zero? and
(fm1_env == fm2_env) and
(fm1_env == fm3_env) and
(fm1_rat - fm1_rat.floor).zero? and
(fm2_rat - fm2_rat.floor).zero? and
(fm3_rat - fm3_rat.floor).zero?)
norm = ((easy_case and modulate and 1.0) or index1)
carrier = make_oscil(freq)
fmosc1 = fmosc2 = fmosc3 = false
indf1 = indf2 = indf3 = false
if modulate
indf1 = make_env(fm1_env, norm, dur)
if easy_case
a = [fm1_rat.to_i, index1,
(fm2_rat / fm1_rat).floor, index2,
(fm3_rat / fm1_rat).floor, index3]
coe = partials2polynomial(a)
fmosc1 = make_polyshape(:frequency, fm1_rat * freq, :coeffs, coe)
else
indf2 = make_env(fm2_env, index2, dur)
indf3 = make_env(fm3_env, index3, dur)
if (fm1_rat * freq * 2.0) > mus_srate
fmosc1 = make_oscil(:frequency, freq)
else
fmosc1 = make_oscil(:frequency, fm1_rat * freq)
end
if (fm2_rat * freq * 2.0) > mus_srate
fmosc2 = make_oscil(:frequency, freq)
else
fmosc2 = make_oscil(:frequency, fm2_rat * freq)
end
if (fm3_rat * freq * 2.0) > mus_srate
fmosc3 = make_oscil(:frequency, freq)
else
fmosc3 = make_oscil(:frequency, fm3_rat * freq)
end
end
end
ampf = make_env(amp_env, amp, dur, 0.0, base)
frqf = make_env(gliss_env, gliss_amount * frq_scl, dur)
pervib = make_triangle_wave(periodic_vibrato_rate,
periodic_vibrato_amp * frq_scl)
ranvib = make_rand_interp(random_vibrato_rate,
random_vibrato_amp * frq_scl)
fm_noi = if noise_amount.nonzero?
make_rand(noise_freq, PI * noise_amount)
else
false
end
ind_noi = if ind_noise_amount.nonzero? and ind_noise_freq.nonzero?
make_rand_interp(ind_noise_freq, ind_noise_amount)
else
false
end
amp_noi = if amp_noise_amount.nonzero? and amp_noise_freq.nonzero?
make_rand_interp(amp_noise_freq, amp_noise_amount)
else
false
end
fuzz = modulation = 0.0
ind_fuzz = amp_fuzz = 1.0
if modulate
if easy_case
lambda do |y|
vib = env(frqf) + triangle_wave(pervib) + rand_interp(ranvib)
ind_fuzz = 1.0 + rand_interp(ind_noi) if ind_noi
amp_fuzz = 1.0 + rand_interp(amp_noi) if amp_noi
modulation = env(indf1) * polyshape(fmosc1, 1.0, vib)
env(ampf) * amp_fuzz * oscil(carrier, vib + ind_fuzz * modulation)
end
else
lambda do |y|
fuzz = rand(fm_noi) if fm_noi
vib = env(frqf) + triangle_wave(pervib) + rand_interp(ranvib)
ind_fuzz = 1.0 + rand_interp(ind_noi) if ind_noi
amp_fuzz = 1.0 + rand_interp(amp_noi) if amp_noi
modulation = (env(indf1) * oscil(fmosc1, fm1_rat * vib + fuzz) +
env(indf2) * oscil(fmosc2, fm2_rat * vib + fuzz) +
env(indf3) * oscil(fmosc3, fm3_rat * vib + fuzz))
env(ampf) * amp_fuzz * oscil(carrier, vib + ind_fuzz * modulation)
end
end
else
lambda do |y|
vib = env(frqf) + triangle_wave(pervib) + rand_interp(ranvib)
ind_fuzz = 1.0 + rand_interp(ind_noi) if ind_noi
amp_fuzz = 1.0 + rand_interp(amp_noi) if amp_noi
env(ampf) * amp_fuzz * oscil(carrier, vib + ind_fuzz)
end
end
end
add_help(:jc_reverb,
"jc_reverb(*args)
:volume = 1.0
:delay1 = 0.013
:delay2 = 0.011
:delay3 = 0.015
:delay4 = 0.017
:low_pass = false
:double = false
:amp_env = false
Chowning reverb")
def jc_reverb(*args)
low_pass, volume, amp_env, delay1, delay2, delay3, delay4, double = nil
optkey(args, binding,
[:volume, 1.0],
[:delay1, 0.013],
[:delay2, 0.011],
[:delay3, 0.015],
[:delay4, 0.017],
[:low_pass, false],
[:double, false],
[:amp_env, false])
chan2 = (@channels > 1)
chan4 = (@channels == 4)
if double and chan4
error("%s: not set up for doubled reverb in quad", get_func_name)
end
allpass1 = make_all_pass(-0.7, 0.7, 1051)
allpass2 = make_all_pass(-0.7, 0.7, 337)
allpass3 = make_all_pass(-0.7, 0.7, 113)
comb1 = make_comb(0.742, 4799)
comb2 = make_comb(0.733, 4999)
comb3 = make_comb(0.715, 5399)
comb4 = make_comb(0.697, 5801)
outdel1 = make_delay((delay1 * @srate).round)
outdel2 = (chan2 ? make_delay((delay2 * @srate).round) : false)
outdel3 = ((chan4 or double) ? make_delay((delay3 * @srate).round) : false)
outdel4 = ((chan4 or (double and chan2)) ?
make_delay((delay4 * @srate).round) : false)
envA = if amp_env
make_env(:envelope, amp_env,
:scaler, volume,
:duration, ws_duration(@revfile) + @decay_time)
else
false
end
comb_sum_1 = comb_sum = 0.0
out_frample = Vct.new(@channels)
run_reverb() do |ho, i|
allpass_sum = all_pass(allpass3, all_pass(allpass2,
all_pass(allpass1, ho)))
comb_sum_2, comb_sum_1 = comb_sum_1, comb_sum
comb_sum = (comb(comb1, allpass_sum) + comb(comb2, allpass_sum) +
comb(comb3, allpass_sum) + comb(comb4, allpass_sum))
all_sums = if low_pass
0.25 * (comb_sum + comb_sum_2) + 0.5 * comb_sum_1
else
comb_sum
end
delA = delay(outdel1, all_sums)
if double
delA += delay(outdel3, all_sums)
end
if envA
volume = env(envA)
end
out_frample[0] = volume * delA
if chan2
delB = delay(outdel2, all_sums)
if double
delB += delay(outdel4, all_sums)
end
out_frample[1] = volume * delB
if chan4
out_frample[2] = volume * delay(outdel3, all_sums)
out_frample[3] = volume * delay(outdel4, all_sums)
end
end
out_frample
end
end
# v.rb ends here
|