This assignment is intended to give you practice with timing, counting, and controlling line~ objects. In essence it is make a pair of chords that fade in and out alternately (with two tones in common that play constantly.) The two chords are (60, 63, 67, 71) and (60, 63, 65, 69) -- the two lowest pitches should play constantly and the two other pairs should fade in and out appropriately.

Your successful patch should sound like this.

To make the patch:

• Make six oscillators, playing MIDI pitches 60, 63, 67, 71, 65, and 69. (Use mtof to convert these to frequencies; this will require using one or more lodabang objects).
• Make a counter that counts repeatedly to 4 (as in 0, 1, 2, 3, 0, 1, 2, 3, ...), one second per count.
• Using select, cause the (67, 71) pair of osccilators to fade in and out on counts 0 and 1, and the (65, 69) pair to fade in and out on counts 2 and 3.
• Add the results and play out your speaker. Put a control in to control the output amplitude to turn the sound on and off.
• Using sends and receives and reasonable names for things, make a button ("bang") that starts the counter at zero, and another to stop it and to mute the two line~ controls (so that only the (50, 63) pair is heard. Label the two buttons with "start" and "stop" comments.

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