cos — Calcule une fonction cosinus.
Voici un exemple de l'opcode cos. Il utilise le fichier cos.csd.
Exemple 163. Exemple de l'opcode cos.
Voir les sections Audio en Temps Réel et Options de la Ligne de Commande pour plus d'information sur l'utilisation des options de la ligne de commande.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac ;;;RT audio out ;-iadc ;;;uncomment -iadc if RT audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o cos.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 instr 1 icos1 = cos(0) ;cosine of 0 is 1 icos2 = cos($M_PI_2) ;cosine of pi/2 (1.5707...) is 0 icos3 = cos($M_PI) ;cosine of pi (3.1415...) is -1 icos4 = cos($M_PI_2 * 3) ;cosine of 3/2pi (4.7123...) is 0 icos5 = cos($M_PI * 2) ;cosine of 2pi (6.2831...) is 1 icos6 = cos($M_PI * 4) ;cosine of 4pi is also 1 as it is periodically to 2pi print icos1, icos2, icos3, icos4, icos5, icos6 endin instr 2 ;cos used in panning, after an example from Hans Mikelson aout vco2 0.8, 220 ; sawtooth kpan linseg p4, p3, p5 ;0 = left, 1 = right kpan = kpan*$M_PI_2 ;range 0-1 becomes 0-pi/2 kpanl = cos(kpan) kpanr = sin(kpan) outs aout*kpanl, aout*kpanr endin </CsInstruments> <CsScore> i 1 0 0 i 2 0 5 0 1 ;move left to right i 2 6 5 1 0 ;move right to left e </CsScore> </CsoundSynthesizer>