analogue_note   xtlang


Defined in:  https://github.com/digego/extempore/tree/v0.8.9/libs/core/instruments/analogue.xtm

Implementation

;; performance profile  (0 high, 1 low)
(bind-func analogue_note
  (lambda ()
    (let ((MILLISEC (* .001 SRs))
          (amp_env:|4,SAMPLE| (array 0.0:f 0.0 1.0 0.0))
          (filter_env:|4,SAMPLE| (array 0.0:f 0.0 1.0 0.0))
          (pitch_env:|2,SAMPLE| (array 0.0:f 0.0))
          (mod_env:|4,SAMPLE| (array 0.0:f 0.0 1.0 0.0))
          (mod_env_delay:SAMPLE 0.0)
          (oldfreq 440.0:f)
          (tune1:SAMPLE 1.0)
          (tune2:SAMPLE 1.0)
          (tune3:SAMPLE 1.0)
          (tune4:SAMPLE 1.0)
          (osc1_wave:enum PARAM_SAW)
          (osc2_wave:enum PARAM_SAW)
          (osc3_wave:enum PARAM_SAW)
          (osc4_wave:enum PARAM_SAW)
          (pw1:SAMPLE 0.5)
          (pw2:SAMPLE 0.5)
          (pw3:SAMPLE 0.5)
          (pw4:SAMPLE 0.5)
          (noise:enum PARAM_WHITE) ;; white
          (noise_amp:SAMPLE 0.0)
          (osc1_amp:SAMPLE 0.25)
          (osc2_amp:SAMPLE 0.0)
          (osc3_amp:SAMPLE 0.0)
          (osc4_amp:SAMPLE 0.0)
          (osc_phase_slop 0.1)
          (osc1_phase:SAMPLE (* osc_phase_slop .1 (random)))
          (osc2_phase:SAMPLE (* osc_phase_slop .1 (random)))
          (osc3_phase:SAMPLE (* osc_phase_slop .1 (random)))
          (osc4_phase:SAMPLE (* osc_phase_slop .1 (random)))
          (osc1_wt:AudioBuffer* DefaultWaveTable)
          (osc2_wt:AudioBuffer* DefaultWaveTable)
          (osc3_wt:AudioBuffer* DefaultWaveTable)
          (osc4_wt:AudioBuffer* DefaultWaveTable)
          (osc_slop:SAMPLE 0.0)
          (sub_amp:SAMPLE 0.0)
          (mods:|32,SAMPLE|* (alloc))
          (noise_amp_mod:SAMPLE 0.0)
          (filter_type:i64 2) ;; LPF2 LPF4, HPF2 HPF4, BPF2 BPF4
          (follow_frq 0.0)
          (follow_amp 0.0)
          (legato #t) ;; if legato is true then don't retrigger adsr's!
          (filter_frq:SAMPLE 15000.0) ;;
          (filter_env_amt:SAMPLE 0.0) ;; this for lpf
          (filter_saturation:SAMPLE 1.0) ;; 1.0-3.0
          (pitch_env_amt:SAMPLE 0.0)
          (portamento:SAMPLE 0.0) ;; in millis
          (res:SAMPLE 0.0)
          (performance_profile:i64 0) ;; high by default
          (reso:SAMPLE 0.0))
      (lambda (data:NoteData* nargs:i64 dargs:SAMPLE*)
        (let ((starttime:i64 (note_starttime data))
              (notetime:i64 starttime)
              (frequency:SAMPLE (+ (note_frequency data) (* (- (random) 0.5) (note_frequency data) osc_slop 0.05)))
              (target_frq:SAMPLE frequency)
              (amplitude:SAMPLE (note_amplitude data))
              (gate:SAMPLE (note_gate data))
              (target_amp:SAMPLE amplitude)
              (newampinc:SAMPLE 0.0)
              (duration:i64 (note_duration data))
              (glideinc:SAMPLE 0.0) ;; for portamento
              (midifrq:SAMPLE 0.0)
              (new_note_timer:i64 0)
              (frq 0.0)
              (adsr1 (adsr_c))
              (adsr2 (adsr_c))
              (adsr3 (adsr_c))
              (adsr4 (dadsr_c))
              (adsr1_val 0.0)
              (adsr2_val 0.0)
              (adsr3_val 0.0)
              (adsr4_val:SAMPLE 0.0)
              ;; (gate:SAMPLE 1.0)
              (amp:SAMPLE 0.0)
              (cof:SAMPLE 0.0)
              (amp_attack (aref amp_env 0))
              (amp_decay (aref amp_env 1))
              (amp_sustain (aref amp_env 2))
              (amp_release (+ 3.0 (aref amp_env 3))) ;; a 3ms release minimum
              (amp_release_samples (convert (* SRs (/ amp_release 1000.0)) i64))
              (reltime:i64 0)
              (filter_attack (aref filter_env 0))
              (filter_decay (aref filter_env 1))
              (filter_sustain (aref filter_env 2))
              (filter_release (aref filter_env 3))
              (pitch_attack (aref pitch_env 0))
              (pitch_decay (aref pitch_env 1))
              (mod_delay mod_env_delay)
              (mod_attack (aref mod_env 0))
              (mod_decay (aref mod_env 1))
              (mod_sustain (aref mod_env 2))
              (mod_release (aref mod_env 3))
              (filter:[SAMPLE,SAMPLE,SAMPLE,SAMPLE]* (if (= 0 performance_profile)
                                                         (moog_ladder_inlined (i64toi32 filter_type))
                                                         (lpf_c)))
              (_osc1_phase (+ osc1_phase (* osc_phase_slop .1 (random))))
              (_osc2_phase (+ osc2_phase (* osc_phase_slop .1 (random))))
              (_osc3_phase (+ osc3_phase (* osc_phase_slop .1 (random))))
              (_osc4_phase (+ osc4_phase (* osc_phase_slop .1 (random))))
              (sin1 (osc_c _osc1_phase))
              (sin2 (osc_c _osc2_phase))
              (sin3 (osc_c _osc3_phase))
              (sin4 (osc_c _osc4_phase))
              (saw1 (blsaw_c _osc1_phase #f #f))
              (saw2 (blsaw_c _osc2_phase #f #f))
              (saw3 (blsaw_c _osc3_phase #f #f))
              (saw4 (blsaw_c _osc4_phase #f #f))
              (pulse1 (blpulse_c _osc1_phase #f))
              (pulse2 (blpulse_c _osc2_phase #f))
              (pulse3 (blpulse_c _osc3_phase #f))
              (pulse4 (blpulse_c _osc4_phase #f))
              (tri1 (bltri_c _osc1_phase))
              (tri2 (bltri_c _osc2_phase))
              (tri3 (bltri_c _osc3_phase))
              (tri4 (bltri_c _osc4_phase))
              (wt1 (AudioBuffer_shared_data osc1_wt))
              (wt2 (AudioBuffer_shared_data osc2_wt))
              (wt3 (AudioBuffer_shared_data osc3_wt))
              (wt4 (AudioBuffer_shared_data osc4_wt))
              (osc1_out:SAMPLE 0.0)
              (osc2_out:SAMPLE 0.0)
              (osc3_out:SAMPLE 0.0)
              (osc4_out:SAMPLE 0.0)
              (zero:SAMPLE 0.0)
              (white (white_c))
              (pink (pink_c))
              (sub_out 0.0)
              (noise_out 0.0)
              (subosc (osc_c 0.0))
              (main_out 0.0:f))
          (if (= 0 performance_profile) (filter.saturation (clamp filter_saturation 1.0:f 3.0:f)))
          (lambda (time:i64 chan:i64)
            (if (= chan 0)
                (begin
                  (set! notetime (tref data 7)) ;; look for voice steeling
                  ;; this for voice steeling
                  (if (and (<> starttime notetime) (>= time notetime))
                    (begin
                        ;; (println "steeling voice:" (convert (frq2midi frequency) i64) "for" (note_frequency data))
                        (if (not legato)
                            (begin
                                (set! amplitude (note_amplitude data)) ;; reset envelopes
                                (retrigger_adsr adsr1) (retrigger_adsr adsr2) (retrigger_adsr adsr3) (retrigger_dadsr adsr4)))
                        ;; (note_starttime data (tref data 7))
                        (set! starttime (tref data 7)) ;(note_starttime data))
                        (set! target_frq (note_frequency data))
                        (set! glideinc (/ (- target_frq frequency) (* portamento 0.001 SRf)))
                        (if (< portamento 0.001) (set! frequency target_frq))
                        (AudioBuffer_set_phase wt1 0.0)
                        (AudioBuffer_set_phase wt2 0.0)
                        (AudioBuffer_set_phase wt3 0.0)
                        (AudioBuffer_set_phase wt4 0.0)
                        (set! reltime 0)
                        (set! gate 1.0) ;(note_gate data))
                        (set! duration (note_duration data))))
                  ;; voice steeling done
                  (if (> (fabs (- target_frq frequency)) 0.125) ;; 1/8 hz
                      (set! frequency (+ frequency glideinc)))
                  (if (and (> gate 0.5) (> (- time starttime) duration)) (set! gate 0.0))
                  ;; (if (and (> (note_gate data) 0.5) (> (- time starttime) duration)) (note_gate data 0.0)) ;; (set! gate 0.0))
                  (set! adsr1_val (adsr1 chan gate amp_attack amp_decay amp_sustain amp_release))
                  (set! adsr2_val (adsr2 chan gate filter_attack filter_decay filter_sustain filter_release))
                  (set! adsr3_val (adsr3 chan gate pitch_attack pitch_decay 0.0 0.0))
                  (set! adsr4_val (adsr4 chan gate mod_delay mod_attack mod_decay mod_sustain mod_release))
                  (set! amp (* amplitude adsr1_val))
                  (set! cof (clamp (+ filter_frq (* follow_frq 8.0 frequency) (* follow_amp amplitude 12000.0)
                                      (* adsr4_val (aref mods PARAM_FILTER_FRQ))
                                      (* filter_env_amt adsr2_val))
                                   0.0 22000.0))
                  (set! res (+ reso (* adsr4_val (aref mods PARAM_FILTER_RES))))
                  (set! frq (+ frequency (* pitch_env_amt frequency adsr3_val) 0.0))
                  (if (< frq 10.0) (set! frq 10.0))
                  ;; if gate is OFF and amp is sufficiently close to 0.0 then stop note!
                  (if (< gate 0.1) (set! reltime (+ reltime 1)))
                  (if (> reltime amp_release_samples)
                      (if (< amp 0.01)
                          (note_active data #f) ;; stop note if amp less than 0.01
                          (begin (set! amplitude (- amplitude 0.01)) #t))) ;; otherwise decrease amplitude over max 100 samples
                  ;; setup mod sources
                  (if (> osc1_amp 0.001)
                      (set! osc1_out (* (+ osc1_amp (* adsr4_val (aref mods PARAM_OSC1_AMP)))
                                        (cond ((= osc1_wave 0) (sin1 1.0 (+ (* tune1 frq) (* adsr4_val (aref mods PARAM_OSC1_FRQ)))))
                                              ((= osc1_wave 1) (saw1 1.0 (+ (* tune1 frq) (* adsr4_val (aref mods PARAM_OSC1_FRQ)))))
                                              ((= osc1_wave 2) (pulse1 1.0 (+ (* tune1 frq)
                                                                              (* adsr4_val (aref mods PARAM_OSC1_FRQ)))
                                                                       (+ pw1 (* adsr4_val (aref mods PARAM_OSC1_PW)))))
                                              ((= osc1_wave 3) (tri1 1.0 (+ (* tune1 frq) (* adsr4_val (aref mods PARAM_OSC1_FRQ)))))
                                              ((= osc1_wave 4) (AudioBuffer_read_interp_pw wt1
                                                                  (+ (* tune1 frq) (* adsr4_val (aref mods PARAM_OSC1_FRQ)))
                                                                  0
                                                                  (+ pw1 (* adsr4_val (aref mods PARAM_OSC1_PW)))))
                                              (else zero))))
                      (set! osc1_out 0.0))
                  (if (> osc2_amp 0.001)
                      (set! osc2_out (* (+ osc2_amp (* adsr4_val (aref mods PARAM_OSC2_AMP)))
                                        (cond ((= osc2_wave 0) (sin2 1.0 (+ (* tune2 frq) (* adsr4_val (aref mods PARAM_OSC2_FRQ)))))
                                              ((= osc2_wave 1) (saw2 1.0 (+ (* tune2 frq) (* adsr4_val (aref mods PARAM_OSC2_FRQ)))))
                                              ((= osc2_wave 2) (pulse2 1.0 (+ (* tune2 frq) (* adsr4_val (aref mods PARAM_OSC2_FRQ)))
                                                                       (+ pw2 (* adsr4_val (aref mods PARAM_OSC2_PW)))))
                                              ((= osc2_wave 3) (tri2 1.0 (+ (* tune2 frq) (* adsr4_val (aref mods PARAM_OSC2_FRQ)))))
                                              ((= osc2_wave 4) (AudioBuffer_read_interp_pw wt2
                                                                  (+ (* tune2 frq) (* adsr4_val (aref mods PARAM_OSC2_FRQ)))
                                                                  0
                                                                  (+ pw2 (* adsr4_val (aref mods PARAM_OSC2_PW)))))
                                              (else zero))))
                      (set! osc2_out 0.0))
                  (if (> osc3_amp 0.001)
                      (set! osc3_out (* (+ osc3_amp (* adsr4_val (aref mods PARAM_OSC3_AMP)))
                                        (cond ((= osc3_wave 0) (sin3 1.0 (+ (* tune3 frq) (* adsr4_val (aref mods PARAM_OSC3_FRQ)))))
                                              ((= osc3_wave 1) (saw3 1.0 (+ (* tune3 frq) (* adsr4_val (aref mods PARAM_OSC3_FRQ)))))
                                              ((= osc3_wave 2) (pulse3 1.0 (+ (* tune3 frq) (* adsr4_val (aref mods PARAM_OSC3_FRQ)))
                                                                       (+ pw3 (* adsr4_val (aref mods PARAM_OSC3_PW)))))
                                              ((= osc3_wave 3) (tri3 1.0 (+ (* tune3 frq) (* adsr4_val (aref mods PARAM_OSC3_FRQ)))))
                                              ((= osc3_wave 4) (AudioBuffer_read_interp_pw wt3
                                                                  (+ (* tune3 frq) (* adsr4_val (aref mods PARAM_OSC3_FRQ)))
                                                                  0
                                                                  (+ pw3 (* adsr4_val (aref mods PARAM_OSC3_PW)))))
                                              (else zero))))
                      (set! osc3_out 0.0))
                  (if (> osc4_amp 0.001)
                      (set! osc4_out (* (+ osc4_amp (* adsr4_val (aref mods PARAM_OSC4_AMP)))
                                        (cond ((= osc4_wave 0) (sin4 1.0 (+ (* tune4 frq) (* adsr4_val (aref mods PARAM_OSC4_FRQ)))))
                                              ((= osc4_wave 1) (saw4 1.0 (+ (* tune4 frq) (* adsr4_val (aref mods PARAM_OSC4_FRQ)))))
                                              ((= osc4_wave 2) (pulse4 1.0 (+ (* tune4 frq) (* adsr4_val (aref mods PARAM_OSC4_FRQ)))
                                                                       (+ pw4 (* adsr4_val (aref mods PARAM_OSC4_PW)))))
                                              ((= osc4_wave 3) (tri4 1.0 (+ (* tune4 frq) (* adsr4_val (aref mods PARAM_OSC4_FRQ)))))
                                              ((= osc4_wave 4) (AudioBuffer_read_interp_pw wt4
                                                                  (+ (* tune4 frq) (* adsr4_val (aref mods PARAM_OSC4_FRQ)))
                                                                  0
                                                                  (+ pw4 (* adsr4_val (aref mods PARAM_OSC4_PW)))))
                                              (else zero))))
                      (set! osc4_out 0.0))
                  (if (> sub_amp 0.001)
                      (set! sub_out (* sub_amp (subosc 1.0 (* frq 0.25))))
                      (set! sub_out 0.0))
                  (if (> noise_amp 0.001)
                      (if (= noise PARAM_WHITE)
                          (set! noise_out (* 0.5 (+ noise_amp (* adsr4_val (aref mods PARAM_NOISE_AMP))) (white)))
                          (set! noise_out (* 0.5 (+ noise_amp (* adsr4_val (aref mods PARAM_NOISE_AMP))) (pink))))
                      (set! noise_out 0.0))
                  (set! main_out (* amp (filter
                               (+ osc1_out
                                  osc2_out
                                  osc3_out
                                  osc4_out
                                  sub_out
                                  noise_out)
                        cof reso)))))
            main_out))))))


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  • xtm_play_note    xtlang    /digego/extempore/tree/v0.8.9/libs/core/instruments.xtm
  • xtm_release_note    xtlang    /digego/extempore/tree/v0.8.9/libs/core/instruments.xtm
  • xtm_start_note    xtlang    /digego/extempore/tree/v0.8.9/libs/core/instruments.xtm
  • xtm_stop_note    xtlang    /digego/extempore/tree/v0.8.9/libs/core/instruments.xtm