1. ECE 3551 Microcomputer Systems
Donald L Troup
Dr. Veton Kepuska
12/11/2009

2. Guitar Amplifier with Pan Effect
Project: Electric Amplifier with Two Effects:
Delay of 3 ms
Reverberation
Also includes a Pan Mode
No pan
Counter-clockwise pan
Clockwise Pan

3. DSP effects Effect one: No effect Effect two: Delay of 3 ms
Input to output, no modification
Effect two: Delay of 3 ms
Uses a buffer to add previous signal values to current values and produce a delayed sound
Effect three: Reverberation
Uses a delay but decreases signal values as they are added to produce reverberation

4. Operation Modes Mode one: No panning Mode two: Counter-clockwise Pan
Simple straight audio output
Plays on all speakers
Mode two: Counter-clockwise Pan
Rotates in a counter-clockwise direction on the four speakers
Mode three: Clockwise Pan
Rotates in a clockwise direction on the four speakers

5. Speed Options Button 3: Increases speed of pan
Increases speed of pan by decreasing the period of Timer0
Applies to both counter-clockwise and clockwise rotation
LED’s also rotate at the increasing speed

6. Speed Options Button 4: Decreases speed of pan
Decreases speed of pan by increasing the period of Timer0
Applies to both counter-clockwise and clockwise rotation
LED’s also rotate at the decreasing speed

7. Results Problems implementing the delay Delay problems overcome
Gain issues
Buffer issues
Delay problems overcome
Implementation of dynamic panning very successful

8. Results Things to change or add: More digital effects Volume controls
Gain controls
Bandwidth filters: Treble, Mid, Bass
More panning speeds
Fade in/out effects
Distortion effects