playNote()

Purpose

Play a musical note

Description

Play a note of the specified frequency, volume and speed on the specified channel

Syntax

playNote( channel, wave, frequency, volume, speed, pan )

Arguments

channel audio channel from 0 to 15

wave wave type (0 = Square, 1 = Saw, 2 = Triangle, 3 = Sine, 4 = Noise )

frequency frequency 10Hz to 20Khz (10 - 20000)

volume volume from 0 to 1

speed speed to reach peak volume (higher is faster)

pan stereo pan from left (0) to right (1)

Example

pan = 0.5
vol = 0.5
for f = 10 to 20000 step 10 loop
    clear()
    printAt( 0, 0, "Left joypad: left right to pan, up down to raise lower volume" )
    printAt( 0, 1, "Frequency: ", f, " Pan: ", pan, " Volume: ", vol )
    c = controls( 0 )
    if c.left then // left to pan left
        pan = pan - 0.01
    endIf
    if c.right then // right to pan right
        pan = pan + 0.01
    endIf
    if c.up then // up to increase volume
        vol = vol + 0.01
    endIf
    if c.down then // down to decrease volume
        vol = vol - 0.01
    endIf
    pan = max( pan, 0 )
    pan = min( pan, 1 )
    vol = max( vol, 0 )
    vol = min( vol, 1 )
    playNote( 0, 0, f, vol, 0.5, pan )
    sleep( 0.05 )
    update()
repeat

Associated Commands