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IMPLEMENTASI PENGGUNAAN MODUL GPS DAN GSM SEBAGAI PEMONITORING KENDARAAN Implementation Of GPS and GSM module as a vehicle monitor
In this time DSP systems are widely applied in various fields, one of them is music.
Examples of application of DSP system is a digital guitar effect devices. Digital guitar effects are
used to manipulate the audio signal input from the guitar in order to produce the desired output
audio signal. Raspberry Pi has an interface that is required for the application of the system in
real time audio processing. The purpose of this research is to use Raspberry Pi to implement
real-time audio effects for guitar that comes with a graphical user interface (GUI). Audio effects
which implemented is overdrive, distortion, flanger, vibrato, tremolo and reverb. Design of audio
program and GUI using Pure Data programming. Sound samples of real time audio effect
Raspberry Pi design results are then compared with sound samples of Overloud software
(simulation program of guitar effects on computer). In comparison sound sample of real time
audio effects Raspberry Pi and software Overloud against sound sample without effect, the
difference between the value of cross-correlation coefficient is the largest on the reverb effect
that is equal to 0.1853 (0.4593 and 0.2740) and the difference in value of the smallest crosscorrelation
coefficient is the vibrato effect that is equal to 0.0216 (0.3993 and 0.3777). In
comparison sound sample of real time audio effects Raspberry Pi and Overloud software
directly, lowest cross-correlation coefficient is the reverb effect that is equal to 0,2242 and the
highest cross-correlation coefficient values is the vibrato effect that is equal to 0.5289.
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