david/librubberband
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Further messing in the tests

Browse Source
This commit is contained in:
Chris Cannam
2024-08-02 15:22:54 +01:00
parent 35f0872867
commit a0099e63bf
1 changed files with 28 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
src/test/TestLiveShifter.cpp
View File

@@ -186,12 +186,23 @@ static void check_sinusoid_shifted(int n, int rate, float freq, float shift,
vector<float> in(n), out(n), expected(n);
int endpoint = n;
if (endpoint > 20000) endpoint -= 10000;
double sumSquares = 0;
double peakIn = 0;
for (int i = 0; i < n; ++i) {
float value = 0.5f * sinf(float(i) * freq * M_PI * 2.f / float(rate));
if (i < endpoint) {
sumSquares += value * value;
}
if (i > endpoint && value > 0.f && in[i-1] <= 0.f) break;
if (fabs(value) > peakIn) {
peakIn = fabs(value);
}
in[i] = value;
expected[i] = 0.5f * sinf(float(i) * freq * shift * M_PI * 2.f / float(rate));
}
double rmsIn = sqrt(sumSquares / endpoint);
cerr << "rmsIn = " << rmsIn << endl;
cerr << "peakIn = " << peakIn << endl;
for (int i = 0; i < n; i += blocksize) {
float *inp = in.data() + i;
@@ -201,15 +212,20 @@ static void check_sinusoid_shifted(int n, int rate, float freq, float shift,
int reportedDelay = shifter.getStartDelay();
int lastCrossing = -1;
double lastCrossing = -1;
int nCrossings = 0;
int accWavelength = 0;
int minWavelength = 0;
int maxWavelength = 0;
double accWavelength = 0;
double minWavelength = 0;
double maxWavelength = 0;
sumSquares = 0;
double peakOut = 0;
for (int i = reportedDelay; i < endpoint; ++i) {
sumSquares += out[i] * out[i];
if (fabs(out[i]) > peakOut) peakOut = fabs(out[i]);
if (out[i-1] < 0.f && out[i] >= 0.f) {
double crossing = (i-1) + (out[i-1] / (out[i-1] - out[i]));
if (lastCrossing >= 0) {
int wavelength = i - lastCrossing;
double wavelength = crossing - lastCrossing;
accWavelength += wavelength;
if (minWavelength == 0 || wavelength < minWavelength) {
minWavelength = wavelength;
@@ -217,21 +233,25 @@ static void check_sinusoid_shifted(int n, int rate, float freq, float shift,
if (maxWavelength == 0 || wavelength > maxWavelength) {
maxWavelength = wavelength;
}
cerr << wavelength << " ";
cerr << "wavelength = " << wavelength << " (freq " << rate / wavelength << ")" << endl;
nCrossings ++;
}
lastCrossing = i;
lastCrossing = crossing;
}
}
cerr << endl;
int avgWavelength = 1;
double avgWavelength = 1;
if (nCrossings > 0) {
avgWavelength = accWavelength / nCrossings;
}
double detectedFreq = double(rate) / double(avgWavelength);
cerr << "nCrossings = " << nCrossings << ", minWavelength = " << minWavelength << ", maxWavelength = " << maxWavelength << ", avgWavelength = " << avgWavelength << ", detectedFreq = " << detectedFreq << " (expected " << freq * shift << ")" << endl;
double rms = sqrt(sumSquares / (endpoint - reportedDelay));
cerr << "rms = " << rms << endl;
cerr << "peak = " << peakOut << endl;
int slackpart = 2048;
int delay = reportedDelay + slackpart;