wgbrass — Creates a tone related to a brass instrument.
Audio output is a tone related to a brass instrument, using a physical model developed from Perry Cook, but re-coded for Csound.
iatt -- time taken to reach full pressure
ifn -- optional table of shape of vibrato, defaults to a sine table.
iminfreq -- lowest frequency at which the instrument will play. If it is omitted it is taken to be the same as the initial kfreq. If iminfreq is negative, initialization will be skipped.
A note is played on a brass-like instrument, with the arguments as below.
kamp -- Amplitude of note.
kfreq -- Frequency of note played.
ktens -- lip tension of the player. Suggested value is about 0.4
kvibf -- frequency of vibrato in Hertz. Suggested range is 0 to 12
kvamp -- amplitude of the vibrato
NOTE | |
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This is rather poor, and at present uncontrolled. Needs revision, and possibly more parameters. |
Here is an example of the wgbrass opcode. Play wgbrass.csd
Example 1216. Example of the wgbrass opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform ; Audio out Audio in No messages -odac -iadc -d ;;;RT audio I/O ; For Non-realtime ouput leave only the line below: ; -o wgbrass.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Initialize the global variables. sr = 44100 ksmps = 10 nchnls = 1 0dbfs = 1 ; Instrument #1. instr 1 kamp = 0.7 kfreq = p4 ktens = p5 iatt = p6 kvibf = p7 ifn = 1 ; Create an amplitude envelope for the vibrato. kvamp line 0, p3, 0.5 a1 wgbrass kamp, kfreq, ktens, iatt, kvibf, kvamp, ifn out a1 endin </CsInstruments> <CsScore> ; Table #1, a sine wave. f 1 0 1024 10 1 ; freq tens att vibf i 1 0 4 440 0.4 0.1 6.137 i 1 4 4 440 0.4 0.01 0.137 i 1 8 4 880 0.4 0.1 6.137 e </CsScore> </CsoundSynthesizer>