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Further tests

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This commit is contained in:
Chris Cannam
2024-05-10 11:51:31 +01:00
parent 5b379121c7
commit c6e8d079d9
2 changed files with 127 additions and 27 deletions
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3
src/finer/R3LiveShifter.cpp
View File

@@ -184,6 +184,7 @@ R3LiveShifter::setPitchScale(double scale)
m_log.log(2, "R3LiveShifter::setPitchScale", scale);
if (scale == m_pitchScale) return;
m_pitchScale = scale;
measureResamplerDelay();
}
void
@@ -242,7 +243,7 @@ R3LiveShifter::measureResamplerDelay()
auto outbuf = inbuf;
int outcount = m_inResampler->resampleInterleaved
(outbuf.data(), bs, inbuf.data(), bs, 1.0, false);
(outbuf.data(), bs, inbuf.data(), bs, m_pitchScale, false);
m_inResampler->reset();

141
src/test/TestLiveShifter.cpp
View File

@@ -42,6 +42,41 @@ namespace tt = boost::test_tools;
BOOST_AUTO_TEST_SUITE(TestLiveShifter)
static void dump(const vector<float> &in,
const vector<float> &out,
const vector<float> &expected,
int delay)
{
std::cerr << "dump: delay reported as " << delay << std::endl;
// The prefix is to allow grep on the test output
std::cout << "IN,sample,V" << std::endl;
for (int i = 0; i < int(in.size()); ++i) {
std::cout << "IN," << i << "," << in[i] << std::endl;
}
std::cout << "OUT,sample,V" << std::endl;
for (int i = 0; i < int(out.size()); ++i) {
std::cout << "OUT," << i << "," << out[i] << std::endl;
}
std::cout << "SHIFTED,sample,V" << std::endl;
for (int i = 0; i + delay < int(out.size()); ++i) {
std::cout << "SHIFTED," << i << "," << out[i + delay] << std::endl;
}
std::cout << "EXPECTED,sample,V" << std::endl;
for (int i = 0; i < int(expected.size()); ++i) {
std::cout << "EXPECTED," << i << "," << expected[i] << std::endl;
}
std::cout << "DIFF,sample,V" << std::endl;
for (int i = 0; i + delay < int(expected.size()); ++i) {
std::cout << "DIFF," << i << "," << out[i + delay] - expected[i] << std::endl;
}
}
static void check_sinusoid_unchanged(int n, int rate, float freq,
RubberBandLiveShifter::Options options,
bool printDebug)
@@ -52,8 +87,6 @@ static void check_sinusoid_unchanged(int n, int rate, float freq,
RubberBandLiveShifter shifter(rate, 1, options);
// shifter.setPitchScale(2.66968);
int blocksize = shifter.getBlockSize();
BOOST_TEST(blocksize == 512);
@@ -72,8 +105,6 @@ static void check_sinusoid_unchanged(int n, int rate, float freq,
int delay = shifter.getStartDelay();
std::cerr << "delay reported as " << delay << std::endl;
// We now have n samples of a simple sinusoid with stretch factor
// 1.0; obviously we expect the output to be essentially the same
// thing. It will have lower precision for a while at the start,
@@ -116,36 +147,94 @@ static void check_sinusoid_unchanged(int n, int rate, float freq,
if (printDebug) {
RubberBandLiveShifter::setDefaultDebugLevel(0);
dump(in, out, in, delay);
}
}
// The prefix is to allow grep on the test output
std::cout << "IN,sample,V" << std::endl;
for (int i = 0; i < int(in.size()); ++i) {
std::cout << "IN," << i << "," << in[i] << std::endl;
static void check_sinusoid_shifted(int n, int rate, float freq, float shift,
RubberBandLiveShifter::Options options,
bool printDebug)
{
if (printDebug) {
RubberBandLiveShifter::setDefaultDebugLevel(2);
}
std::cout << "OUT,sample,V" << std::endl;
for (int i = 0; i < int(out.size()); ++i) {
std::cout << "OUT," << i << "," << out[i] << std::endl;
RubberBandLiveShifter shifter(rate, 1, options);
shifter.setPitchScale(shift);
int blocksize = shifter.getBlockSize();
BOOST_TEST(blocksize == 512);
n = (n / blocksize + 1) * blocksize;
vector<float> in(n), out(n), expected(n);
for (int i = 0; i < n; ++i) {
in[i] = 0.5f * sinf(float(i) * freq * M_PI * 2.f / float(rate));
expected[i] = 0.5f * sinf(float(i) * freq * shift * M_PI * 2.f / float(rate));
}
std::cout << "SHIFTED,sample,V" << std::endl;
for (int i = 0; i + delay < int(out.size()); ++i) {
std::cout << "SHIFTED," << i << "," << out[i + delay] << std::endl;
for (int i = 0; i < n; i += blocksize) {
float *inp = in.data() + i;
float *outp = out.data() + i;
shifter.shift(&inp, &outp);
}
std::cout << "DIFF,sample,V" << std::endl;
for (int i = 0; i + delay < int(in.size()); ++i) {
std::cout << "DIFF," << i << "," << out[i + delay] - in[i] << std::endl;
int delay = shifter.getStartDelay();
std::cerr << "delay reported as " << delay << std::endl;
// We now have n samples of a simple sinusoid with stretch factor
// 1.0; obviously we expect the output to be essentially the same
// thing. It will have lower precision for a while at the start,
// so we check that with a threshold of 0.1; after that we expect
// better precision.
int slackpart = 2048;
float slackeps = 1.0e-1f;
float eps = 1.0e-3f;
#ifdef USE_BQRESAMPLER
eps = 1.0e-2f;
#endif
for (int i = 0; i < slackpart; ++i) {
float fin = expected[i];
float fout = out[delay + i];
float err = fabsf(fin - fout);
if (err > slackeps) {
std::cerr << "Error at index " << i << " exceeds slack eps "
<< slackeps << ": output " << fout << " - expected "
<< fin << " = " << fout - fin << std::endl;
BOOST_TEST(err < eps);
break;
}
}
for (int i = slackpart; i < n - delay; ++i) {
float fin = expected[i];
float fout = out[delay + i];
float err = fabsf(fin - fout);
if (err > eps) {
std::cerr << "Error at index " << i << " exceeds tight eps "
<< eps << ": output " << fout << " - expected "
<< fin << " = " << fout - fin << std::endl;
BOOST_TEST(err < eps);
break;
}
}
if (printDebug) {
RubberBandLiveShifter::setDefaultDebugLevel(0);
dump(in, out, expected, delay);
}
}
BOOST_AUTO_TEST_CASE(sinusoid_unchanged_mode_a)
{
RubberBandLiveShifter::Options options =
RubberBandLiveShifter::OptionPitchMethodStandard;
int n = 100000;
int n = 20000;
check_sinusoid_unchanged(n, 44100, 440.f, options, false);
check_sinusoid_unchanged(n, 48000, 260.f, options, false);
@@ -155,10 +244,20 @@ BOOST_AUTO_TEST_CASE(sinusoid_unchanged_mode_b)
{
RubberBandLiveShifter::Options options =
RubberBandLiveShifter::OptionPitchMethodAlternate;
int n = 100000;
int n = 20000;
check_sinusoid_unchanged(n, 44100, 440.f, options, true);
check_sinusoid_unchanged(n, 44100, 440.f, options, false);
check_sinusoid_unchanged(n, 48000, 260.f, options, false);
}
BOOST_AUTO_TEST_CASE(sinusoid_down_octave_mode_a)
{
RubberBandLiveShifter::Options options =
RubberBandLiveShifter::OptionPitchMethodStandard;
int n = 20000;
check_sinusoid_shifted(n, 44100, 440.f, 0.5f, options, true);
// check_sinusoid_shifted(n, 48000, 260.f, 0.5f, options, false);
}
BOOST_AUTO_TEST_SUITE_END()