test_filters.cc File Reference

#include <Nsound/NsoundAll.h>
#include "Test.h"
#include <iostream>

Include dependency graph for test_filters.cc:

Go to the source code of this file.

Functions
int	main (int argc, char **argv)

Variables
static const char *	THIS_FILE = "test_filters.cc"

Function Documentation

int main	(	int	argc,
		char **	argv
	)

Definition at line 43 of file test_filters.cc.

References Nsound::Generator::drawLine(), Nsound::FilterHighPassIIR::filter(), Nsound::FilterHighPassFIR::filter(), Nsound::FilterLowPassFIR::filter(), Nsound::FilterLowPassIIR::filter(), Nsound::FilterBandRejectFIR::filter(), Nsound::FilterBandPassFIR::filter(), Nsound::FilterBandPassIIR::filter(), Nsound::FilterBandRejectIIR::filter(), Nsound::Generator::generate(), TEST_HEADER, Nsound::Tic(), and Nsound::Toc().

{
    Sine sin(44100);

    Buffer frequency_sweep = sin.drawLine(5.0, 0.0, 1720.0);

    AudioStream output(44100, 1);
    AudioStream input(44100, 1);

    input = sin.generate(5.0, frequency_sweep);

    input >> "filters_input.wav";

    Buffer low_freqs = 200.0 * sin.generate(5.0, 1.0) + frequency_sweep;

    Buffer high_freqs = 200.0 + low_freqs;

    cout << TEST_HEADER
         << "testing FilterLowPassFIR ... " << flush;

    FilterLowPassFIR f1(44100, 256, 880.0);

    Tic();

    output = f1.filter(input);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_fir_low_pass.wav";

    cout << TEST_HEADER
         << "testing FilterLowPassIIR ... " << flush;

    Tic();

    FilterLowPassIIR f2(44100, 4, 880.0, 0.01);

    output = f2.filter(input);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_iir_low_pass.wav";

    cout << TEST_HEADER
         << "testing FilterLowPassFIR dynamic filtering... " << flush;

    Tic();

    output = f1.filter(input, low_freqs);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_fir_low_pass_dynamic.wav";

    cout << TEST_HEADER
         << "testing FilterLowPassIIR dynamic filtering... " << flush;

    Tic();

    output = f2.filter(input, low_freqs);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_iir_low_pass_dynamic.wav";

    cout << TEST_HEADER
        << "testing FilterHighPassFIR ... " << flush;

    FilterHighPassFIR f3(44100, 256, 880.0);

    Tic();
    output = f3.filter(input);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_fir_high_pass.wav";

    cout << TEST_HEADER
        << "testing FilterHighPassIIR ... " << flush;

    FilterHighPassIIR f4(44100, 4, 880.0, 0.01);

    Tic();
    output = f4.filter(input);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_iir_high_pass.wav";

    cout << TEST_HEADER
         << "testing FilterHighPassFIR dynamic filtering... " << flush;

    Tic();
    output = f3.filter(input, high_freqs);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_fir_high_pass_dynamic.wav";

    cout << TEST_HEADER
         << "testing FilterHighPassIIR dynamic filtering... " << flush;

    Tic();
    output = f4.filter(input, high_freqs);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_iir_high_pass_dynamic.wav";

    cout << TEST_HEADER
        << "testing FilterBandRejectFIR ... " << flush;

    FilterBandRejectFIR f5(44100, 512, 450.0, 870.0);

    Tic();
    output = f5.filter(input);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_fir_band_reject.wav";

    cout << TEST_HEADER
        << "testing FilterBandRejectIIR ... " << flush;

    FilterBandRejectIIR f6(44100, 4, 440.0, 880.0, 0.01);

    Tic();
    output = f6.filter(input);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_iir_band_reject.wav";

    cout << TEST_HEADER
         << "testing FilterBandRejectFIR dynamic filtering... " << flush;

    Tic();

    output = f5.filter(input, low_freqs, high_freqs);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_fir_band_reject_dynamic.wav";

    cout << TEST_HEADER
         << "testing FilterBandRejectIIR dynamic filtering... " << flush;

    Tic();

    output = f6.filter(input, low_freqs, high_freqs);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_iir_band_reject_dynamic.wav";

    cout << TEST_HEADER
         << "testing FilterBandPassFIR ... " << flush;

    FilterBandPassFIR f7(44100, 512, 440, 880);

    Tic();
    output = f7.filter(input);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_fir_band_pass.wav";

    cout << TEST_HEADER
        << "testing FilterBandPassIIR ... " << flush;

    FilterBandPassIIR f8(44100, 4, 440.0, 880.0, 0.01);

    Tic();
    output = f8.filter(input);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_iir_band_pass.wav";

    cout << TEST_HEADER
         << "testing FilterBandPassFIR dynamic filtering... " << flush;

    Tic();
    output = f7.filter(input, low_freqs, high_freqs);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_fir_band_pass_dynamic.wav";

    cout << TEST_HEADER
         << "testing FilterBandPassIIR dynamic filtering... " << flush;

    Tic();
    output = f8.filter(input, low_freqs, high_freqs);

    cout << Toc() << " seconds"
         << endl;

    output >> "filters_iir_band_pass_dynamic.wav";

    return 0;
}

Variable Documentation

const char* THIS_FILE = "test_filters.cc"

static

Definition at line 41 of file test_filters.cc.