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- ;; stk.lsp -- STK-based instruments
- ;;
- ;; currently clarinet and saxophony are implemented
-
- (defun instr-parameter (parm)
- ;; coerce parameter into a *sound-srate* signal
- (cond ((numberp parm)
- (stretch 30 (control-srate-abs *sound-srate* (const (float parm)))))
- (t
- (force-srate *sound-srate* parm))))
-
-
- (defun clarinet (step breath-env)
- (snd-clarinet (step-to-hz step) (force-srate *sound-srate* breath-env) *sound-srate*))
-
-
- (defun clarinet-freq (step breath-env freq-env)
- ;; note that the parameters are in a different order -- I defined
- ;; clarinet-freq this way so that the first two parameters are always
- ;; step and breath. I didn't redo snd-clarinet-freq.
- (snd-clarinet_freq (step-to-hz step)
- (instr-parameter breath-env)
- (instr-parameter freq-env)
- *sound-srate*))
-
-
-
- (defun clarinet-all (step breath-env freq-env vibrato-freq vibrato-gain reed-stiffness noise)
- ;; note that the parameters are not in the same order as snd-clarinet-all
- (setf breath-env (instr-parameter breath-env))
- (setf freq-env (instr-parameter freq-env))
- (setf reed-stiffness (instr-parameter reed-stiffness))
- (setf noise (instr-parameter noise))
- (snd-clarinet_all (step-to-hz step)
- breath-env freq-env
- ;; STK scales 1.0 to 12Hz. Scale here so vibrato-freq is in Hz
- (/ vibrato-freq 12.0) vibrato-gain
- reed-stiffness noise
- *sound-srate*))
-
-
- (defun sax (step breath-env)
- (snd-sax (step-to-hz step) (force-srate *sound-srate* breath-env) *sound-srate*))
-
- (defun sax-freq (step breath-env freq-env)
- (snd-sax_freq (step-to-hz step)
- (instr-parameter breath-env)
- (instr-parameter freq-env)
- *sound-srate*))
-
- (defun sax-all (step breath-env freq-env vibrato-freq vibrato-gain reed-stiffness noise blow-pos reed-table-offset)
- (snd-sax_all (step-to-hz step)
- (instr-parameter freq-env)
- (instr-parameter breath-env)
- (instr-parameter (/ vibrato-freq 12.0))
- (instr-parameter vibrato-gain)
- (instr-parameter reed-stiffness)
- (instr-parameter noise)
- (instr-parameter blow-pos)
- (instr-parameter reed-table-offset)
- *sound-srate*)
- )
-
- ; instr-parameter already defined in stk.lsp
-
- (defun flute (step breath-env)
- (snd-flute (step-to-hz step) (force-srate *sound-srate* breath-env) *sound-srate*))
-
- (defun flute-freq (step breath-env freq-env)
- (snd-flute_freq (step-to-hz step)
- (instr-parameter breath-env)
- (instr-parameter freq-env)
- *sound-srate*))
-
- (defun flute-all (step breath-env freq-env vibrato-freq vibrato-gain jet-delay noise)
- ;; note that the parameters are not in the same order as snd-clarinet-all
- (setf breath-env (instr-parameter breath-env))
- (setf freq-env (instr-parameter freq-env))
- (setf jet-delay (instr-parameter jet-delay))
- (setf noise (instr-parameter noise))
- (snd-flute_all (step-to-hz step)
- breath-env freq-env
- ;; STK scales 1.0 to 12Hz. Scale here so vibrato-freq is in Hz
- (/ vibrato-freq 12.0) vibrato-gain
- jet-delay noise
- *sound-srate*))
-
-
- (defun bowed (step bowpress-env)
- (snd-bowed (step-to-hz step) (force-srate *sound-srate* bowpress-env) *sound-srate*))
-
- (defun bowed-freq (step bowpress-env freq-env)
- (snd-bowed_freq (step-to-hz step)
- (instr-parameter bowpress-env)
- (instr-parameter freq-env)
- *sound-srate*))
-
- (defun mandolin (step dur &optional (detune 4.0))
- (let ((d (get-duration dur)))
- (snd-mandolin *rslt* (step-to-hz step) d 1.0 detune *sound-srate*)))
-
- (defun wg-uniform-bar (step bowpress-env)
- (snd-bandedwg (step-to-hz step) (force-srate *sound-srate* bowpress-env) 0 *sound-srate*))
-
- (defun wg-tuned-bar (step bowpress-env)
- (snd-bandedwg (step-to-hz step) (force-srate *sound-srate* bowpress-env) 1 *sound-srate*))
-
- (defun wg-glass-harm (step bowpress-env)
- (snd-bandedwg (step-to-hz step) (force-srate *sound-srate* bowpress-env) 2 *sound-srate*))
-
- (defun wg-tibetan-bowl (step bowpress-env)
- (snd-bandedwg (step-to-hz step) (force-srate *sound-srate* bowpress-env) 3 *sound-srate*))
-
- (defun modalbar (preset step duration)
- (let ((preset (case preset
- (MARIMBA 0)
- (VIBRAPHONE 1)
- (AGOGO 2)
- (WOOD1 3)
- (RESO 4)
- (WOOD2 5)
- (BEATS 6)
- (TWO-FIXED 7)
- (CLUMP 8)
- (t (error (format nil "Unknown preset for modalbar %A" preset)))))
- (d (get-duration duration)))
- (snd-modalbar *rslt* (step-to-hz step) preset d *sound-srate*)))
-
- (defun sitar (step dur)
- (let ((d (get-duration dur)))
- (snd-sitar *rslt* (step-to-hz step) d *sound-srate*)))
-
- (defun nyq:nrev (snd rev-time mix)
- (snd-stkrev 0 snd rev-time mix *sound-srate*))
-
- (defun nyq:jcrev (snd rev-time mix)
- (snd-stkrev 1 snd rev-time mix *sound-srate*))
-
- (defun nyq:prcrev (snd rev-time mix)
- (snd-stkrev 2 snd rev-time mix *sound-srate*))
-
- (defun nrev (snd rev-time mix)
- (multichan-expand #'nyq:nrev snd rev-time mix))
-
- (defun jcrev (snd rev-time mix)
- (multichan-expand #'nyq:jcrev snd rev-time mix))
-
- (defun prcrev (snd rev-time mix)
- (multichan-expand #'nyq:prcrev snd rev-time mix))
-
- (defun nyq:chorus (snd depth freq mix &optional (base-delay 6000))
- (snd-stkchorus snd base-delay depth freq mix *sound-srate*))
-
- (defun stkchorus (snd depth freq mix &optional (base-delay 6000))
- (multichan-expand #'nyq:chorus snd depth freq mix base-delay))
-
- (defun nyq:pitshift (snd shift mix)
- (snd-stkpitshift snd shift mix *sound-srate*))
-
- (defun pitshift (snd shift mix)
- (multichan-expand #'nyq:pitshift snd shift mix))
-
-
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ; HELPER FUNCTIONS
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ; pass in rates of increase/decrease in begin/end... this is like noteOn and noteOff
- ;
- ; STK uses setRate but the actual ramp time is also a function of the sample rate.
- ; I will assume the clarinet was run at 44100Hz and fix things so that the envelope
- ; is sample-rate independent.
- ;
- ; STK seemed to always give a very fast release, so I changed the numbers so that
- ; note-off values from 0.01 to 1 give an interesting range of articulations.
- ;
- ; IMPORTANT: the returned envelope is 0.1s longer than dur. There is 0.1s of silence
- ; at the end so that the clarinet can "ring" after the driving force is removed.
- ;
- (defun stk-breath-env (dur note-on note-off)
- (let* ((target (+ 0.55 (* 0.3 note-on)))
- (on-time (/ (* target 0.0045) note-on))
- (off-time (/ (* target 0.02) note-off)))
- ;(display "clarinet-breath-env" target on-time off-time)
- (pwl on-time target
- (- dur off-time) target
- dur 0 (+ dur 0.1))))
-
-
-