Programming Sound Cards/Programming Sound Cards.iso/sound_52/gamy.ma

Text File | 1995-01-01 | 5.2 KB | 356 lines

#
# GAMELOT (sorry...)
#
# gamelan like  melody
#
# Taken from "Music of the Whole Earth", David Reck
#

#
# uses fb01 to take advantage of cents tuning.
#
# four modes, 3 slendo and 1 pelog
# piece switches states between 3 slendo modes and 1 pelog
# scale, that is not really setup for any particular mode.
#

MAXNOTE = 18
SLENDRONOTES = 16
PELOGNOTES = 18

uchar snotes[MAXNOTE]
uchar scents[MAXNOTE]

uchar mode            # current mode
uchar melnote        # global melody note
uchar meltime        # global melody time
uchar counter
uchar nonotes

# set up 5 tone slendro scale
# slendro 5 tones are 263,223,253,236,225  cents apart in one octave
# sets up a slendo scale, assuming 5 notes with correct cents
# not used, but shows basic notes and cents. Key of C.
#
riff initSlendro()
    snotes[0] = C
    scents[0] = 0
    snotes[1] = D
    scents[1] = 63
    snotes[2] = E
    scents[2] = 86
    snotes[3] = G
    scents[3] = 39
    snotes[4] = A
    scents[4] = 75
end

# 7 tone pelog scale
# mode is lima
#
# C,C#,E,F,F#,A,B with appropriate cents
#
# 5 F
# 4 B
# 3 E
#
# 2 C
# 2 A
#
# 1 C#
# 1 F#
# 18 notes needed
riff initPelog()
    snotes[0] = C
    scents[0] = 0
    snotes[7] = HC
    scents[7] = 0

    snotes[1] = C#
    scents[1] = 67

    snotes[2] = E
    scents[2] = 12
    snotes[8] = HE
    scents[8] = 12
    snotes[9] = HE
    scents[9] = 12

    snotes[10] = HF
    scents[10] = 37
    snotes[3] = F
    scents[3] = 37
    snotes[17] = F
    scents[17] = 37
    snotes[16] = F
    scents[16] = 37
    snotes[15] = LF
    scents[15] = 37

    snotes[4] = F#
    scents[4] = 83

    snotes[5] = A
    scents[5] = 35
    snotes[12] = HA
    scents[12] = 35

    snotes[14] = LB
    scents[14] = 0
    snotes[6] = B
    scents[6] = 0
    snotes[11] = HB
    scents[11] = 0
    snotes[13] = B
    scents[13] = 0

end


# nem mode
# C,E,A emphasized, others are auxilliary
# we span two octaves
# 5 c
# 4 e
# 3 a
# 2 d, 2 g
riff initNem()
    snotes[0] = C
    scents[0] = 0
    snotes[5] = HC
    scents[5] = 0
    snotes[6] = C
    scents[6] = 0
    snotes[7] = HC
    scents[7] = 0
    snotes[12] = LC
    scents[12] = 0

    snotes[1] = D
    scents[1] = 63
    snotes[14] = HD
    scents[14] = 63

    snotes[2] = E
    scents[2] = 86
    snotes[8] = HE
    scents[8] = 86
    snotes[9] = E
    scents[9] = 86
    snotes[10] = HE
    scents[10] = 86

    snotes[3] = G
    scents[3] = 39
    snotes[15] = HG
    scents[15] = 39

    snotes[4] = A
    scents[4] = 75
    snotes[11] = HA
    scents[11] = 75
    snotes[13] = HA
    scents[13] = 75

end

# sanga mode
#
# 5 e
# 4 a
# 3 d
# 2 c
# 2 g
#
riff initSanga()
    snotes[0] = C
    scents[0] = 0
    snotes[14] = HC
    scents[14] = 0

    snotes[1] = D
    scents[1] = 63
    snotes[5] = HD
    scents[5] = 63
    snotes[6] = D
    scents[6] = 63

    snotes[7] = LE
    scents[7] = 86
    snotes[2] = E
    scents[2] = 86
    snotes[8] = HE
    scents[8] = 86
    snotes[9] = E
    scents[9] = 86
    snotes[10] = HE
    scents[10] = 86

    snotes[3] = G
    scents[3] = 39
    snotes[15] = HG
    scents[15] = 39

    snotes[4] = A
    scents[4] = 75
    snotes[11] = HA
    scents[11] = 75
    snotes[12] = A
    scents[12] = 75
    snotes[13] = HA
    scents[13] = 75

end

#
# slendro scale, manjura mode
#
#    5 g
#    4 c
#    3 e
#    2 d
#    2 a
#
riff initManjura()
    snotes[0] = C
    scents[0] = 0
    snotes[5] = HC
    scents[5] = 0
    snotes[6] = C
    scents[6] = 0
    snotes[7] = HC
    scents[7] = 0

    snotes[1] = D
    scents[1] = 63
    snotes[14] = HD
    scents[14] = 63

    snotes[2] = E
    scents[2] = 86
    snotes[8] = HE
    scents[8] = 86
    snotes[9] = E
    scents[9] = 86

    snotes[10] = LG
    scents[10] = 39
    snotes[3] = G
    scents[3] = 39
    snotes[11] = HG
    scents[11] = 39
    snotes[12] = G
    scents[12] = 39
    snotes[13] = HG
    scents[13] = 39

    snotes[4] = A
    scents[4] = 75
    snotes[15] = HA
    scents[15] = 75
end

riff nextMode()
    if ( mode == 0 )
        nonotes = SLENDRONOTES
        void initNem()
        counter = 90
        metro 85
    else
        if ( mode == 1 )
            nonotes = SLENDRONOTES
            void initSanga()
            counter = 125
            metro 145
        else
            if ( mode == 2)
                nonotes = SLENDRONOTES
                void initManjura()
                counter = 140
                metro 160
            else
                nonotes = PELOGNOTES
                void initPelog()
                counter = 175
                metro 175
            end
        end
    end
    void printf("%d\n",mode)
    mode++
    if ( mode == 4)
        mode = 0
    end
end

vco    s1
    uchar sectcount

    counter = 0
    mode = 0

    sectcount = 0

    for(;;)
        # choose mode
        if ( counter == 0 )
            void nextMode()
            sectcount++
        end
        counter--
        #
        # play note
        #
        melnote = mrandrange(0,nonotes)
        if ( mrand() % 2 )
            meltime = q
        else
            meltime = e
        end
        snotes[melnote] meltime    mrandrange(100,127)    scents[melnote]

    end
end


# one every 2 (may have double beat)
vco low
    uchar rval
    for (;;)
        rval = mrand() % 3
        if (rval == 0)
            snotes[melnote]-12    h mrandrange(100,127) scents[melnote]
        else
            snotes[melnote]-12    q mrandrange(100,127) scents[melnote]
            snotes[melnote]-12    q mrandrange(100,127) scents[melnote]
        end
    end
end

# one every 4
vco lower
    uchar nnote
    for (;;)
        snotes[melnote]-24    q    mrandrange(100,127) scents[melnote]
        rest    q
        rest    q
        rest    q
    end
end


# once every 16
vco whole
    uchar nnote
    for (;;)
        if ( {mrand() % 3} == 1)
            snotes[melnote]-36    w 127 scents[melnote]
        else
            rest    w
        end
        rest    w
        rest    w
        rest    w
    end
end