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DSP PROJECT

THREE BAND GRAPHIC EQUALIZER
by

suraj Kulkarni

on 5 December 2012

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Transcript of DSP PROJECT

INTRODUCTION WHAT IS SIMULINK? Simulink software models, simulates, and analyzes dy-
namic systems.
Simulink provides a graphical user interface (GUI) for
building models as block diagrams, using drag and drop
operations. EQUALIZATION: Equalization is the process to alter the frequency response
of an audio system using linear filters.
An equalizer is the circuit or equipment used to achieve equalization

It is achieved by making use of band pass filters
with suitably designed BandWidths,Center frequencies
and PASS and STOP BAND.
We make use of equiripple fir filters. OBJECTIVES: 1. DESIGN A 3 BAND GRAPHIC EQUALIZER US-
ING SIMULINK.

2. INTERFACE WITH EXTERNAL AUDIO SOURCE
AND OBSERVE THE OUTPUT IN TIME SCOPE. DESIGN : 1st BAND PASS FILTER: PASS BAND=500 Hz to 1500Hz
CENTER FREQUENCY=1KHz

2nd BAND PASS FILTER: PASS BAND=4000 Hz to 6000Hz
CENTER FREQUENCY=5KHz

3rd BAND PASS FILTER:PASS BAND= 7000 Hz to 9000Hz
CENTER FREQUENCY=8KHz Graphics equalizer In the graphic equalizer, the input signal is
sent to a bank of filters. Each filter passes the
portion of the signal present in its own
frequency range or band. The amplitude
passed by each filter is adjusted using a
control to boost or cut frequency
components passed by that filter. We make use of 3 BAND PASS filters APPLICATIONS: Equalizers are used in recording studios, broadcaststudios, and live sound reinforcement to correct theresponse of microphones, loudspeakers Equalizers are also used in music production to adjust the timbre of individual instruments by adjusting their frequency content and to fit individual instruments within the overall frequencyspectrum of the mix Equalization may also be used to eliminate unwanted sounds, make certain instruments orvoices more prominent, enhance particular aspectsof an instrument’s tone. Finally The Outputs From all the BPF’s are Added and the output is observed in Spectrum Scope or Time scope. BLOCK DIAGRAM: DSP PROJECT THREE BAND GRAPHIC EQUALIZER SURAJ V KULKARNI 1MS10EC127

SHIV KUMAR
1MS10EC115

SHARAT CHANDRA N G 1MS10EC111

VINAY G D
1MS10EC136

T SANTOSH SHENOY 1MS10EC129 We thank
Mr C G RAGHAVENDRA
for providing an oppurtunity and the guidance to work on this project oppurtunity
Full transcript