/usr/share/doc/libsndobj-dev/examples/sinus.cpp is in libsndobj-dev 2.6.6.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | // Copyright (c)Victor Lazzarini, 1997-2004
// See License.txt for a disclaimer of all warranties
// and licensing information
#include <SndObj/AudioDefs.h>
#include <string.h>
#include <math.h>
#include <time.h>
#ifndef WIN32
#include <unistd.h>
#endif
int
main(int argc, char** argv){
if(argc != 8) {
cout << argv[0] << " infile.wav outfile.wav timestr pitch thresh intracks outracks\n";
return 1;
}
time_t ts, te;
char* infile = argv[1];
char* outfile = argv[2];
float stratio = atof(argv[3]); // time-stretch ratio
float pitch = atof(argv[4]);
float thresh = atof(argv[5]); // analysis threshold
int intracks = atoi(argv[6]); // analysis max number of tracks
int outracks = atoi(argv[7]); // synthesis */
int fftsize = 2048; // FFT analysis size 2048
int decimation = 512; // analysis hopsize
int interpolation = (int)(decimation*stratio); // synthesis hopsize
float scale = 1.f; // scaling factor */
time(&ts);
// SndObj objects set-up
HarmTable table(10000, 1, 1, 0.25); // cosine wave
HammingTable window(fftsize, 0.5); // hanning window
// input sound
SndWave input(infile,READ,1,16,0,0.f,decimation);
SndIn insound(&input, 1, decimation);
// IFD analysis
IFGram ifgram(&window,&insound,1.f,fftsize,decimation);
// Sinusoidal analysis
SinAnal sinus(&ifgram,thresh,intracks, 2, 3);
// Sinusoidal resynthesis
AdSyn synth(&sinus,outracks,&table,pitch,scale,interpolation);
// SinSyn synth(&sinus,outracks,&table,scale,interpolation);
// output sound
// SndRTIO output(1,SND_OUTPUT,16384,10,SHORTSAM,0,interpolation);
SndWave output(outfile, OVERWRITE,1,16,0,0.f,interpolation);
output.SetOutput(1, &synth);
// processing loop
while(!input.Eof()){
input.Read();
insound.DoProcess();
sinus.DoProcess();
synth.DoProcess();
output.Write();
}
time(&te); cout << " process time (secs): " << (te -ts) << "\n";
return 0;
}
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