bformenc — Deprecated. Codes a signal into the ambisonic B format.
Codes a signal into the ambisonic B format. Note that this opcode is deprecated as it is inaccurate, and is replaced by the much better opcode bformenc1 which replicates all the important features; also note that the gain arguments are not available in bformenc1.
aw, ax, ay, az bformenc asig, kalpha, kbeta, kord0, kord1
aw, ax, ay, az, ar, as, at, au, av bformenc asig, kalpha, kbeta, \
kord0, kord1 , kord2
aw, ax, ay, az, ar, as, at, au, av, ak, al, am, an, ao, ap, aq bformenc \
asig, kalpha, kbeta, kord0, kord1, kord2, kord3
aw, ax, ay, ... -- output cells of the B format.
asig -- input signal.
kalpha –- azimuth angle in degrees (clockwise).
kbeta -- altitude angle in degrees.
kord0 -- linear gain of the zero order B format.
kord1 -- linear gain of the first order B format.
kord2 -- linear gain of the second order B format.
kord3 -- linear gain of the third order B format.
Here is an example of the bformenc opcode. Play bformenc.csd
Example 1329. Example of the bformenc 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 bformenc.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 kr = 4410 ksmps = 10 nchnls = 8 ;bformenc is deprecated, please use bformenc1 instr 1 ; generate pink noise anoise pinkish 1000 ; two full turns kalpha line 0, p3, 720 kbeta = 0 ; fade ambisonic order from 2nd to 0th during second turn kord0 = 1 kord1 linseg 1, p3 / 2, 1, p3 / 2, 0 kord2 linseg 1, p3 / 2, 1, p3 / 2, 0 ; generate B format aw, ax, ay, az, ar, as, at, au, av bformenc anoise, kalpha, kbeta, kord0, kord1, kord2 ; decode B format for 8 channel circle loudspeaker setup a1, a2, a3, a4, a5, a6, a7, a8 bformdec 4, aw, ax, ay, az, ar, as, at, au, av ; write audio out outo a1, a2, a3, a4, a5, a6, a7, a8 endin </CsInstruments> <CsScore> ; Play Instrument #1 for 20 seconds. i 1 0 20 e </CsScore> </CsoundSynthesizer>