Chirp test signals confused the test signal begin marker position
seek and caused false test fails. The test stimulus may produce
stronger cross correlation level than the actual marker. Also
the check omitted that the cross correlation max could be negative
so the test was changed into power domain and use first/last
cross correlation peak above threshold as test begin/end position.
Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
Gain of SRC varies by 1 dB due built-in attenuation in the filter
coefficients. It was added to avoid signal overshoots to distort
with some challenging music content. When a converter consists of
two filters in series the attenuation duplicates. While SRC is
missing the gain compensation the test criteria needs to be relaxed.
Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
This patch updates the locations of "make install" libraries default
install locations into shell script to run SRC test cases. The script
also now prints the used LD_LIBRARY path to ease setting up code
debugging.
The segfault of testbench executable is fixed by returning a valid
pointer reference instead of a NULL from test dummy function
arch_schedulers_get(). The rest of testbench version of schedule.c
was also updated to be like the current real version module.
Finally in the testbench.c main the file names string pointers are
initilizated to null as well as the word length parameter to avoid
a segfault if executable is started without command line arguments
to see the usage help text.
Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
This patch adds a shell script sof_test_perf.sh that measures
gain, frequency response, and total harmonic distortion plus
noise for a remote device.
Matlab or Octave is needed. The shell script launches by default
Octave to process the signal generation and test results analysis
scripts.
The remote device must be set to be accessible by ssh without
passwords. An external high quality USB sound card is recommended
as analog interface to connect to test device's analog interface.
The configuration file sof_test_perf_config.m must be edited for
the remote device's user account, audio device, audio format, and
capture sound card audio device, and audio format.
Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
The tests created lot of unnecessary fails when testing with S16_LE
format. The test pass criteria for THD+N, DR is relaxed for tests
with 16 bit data.
Since the gain of SRC conversions was lowered to -1 dB the test
case for gain need to be updated. The gain is retrieved from
src_param() function. An exception is added for FS1 == FS2 case
when data is passed through. In that case expected gain is 0 dB.
The frequency response measurement grid does not necessarily cover
the exact upper frequency of pass-band. Therefore the min. upper
passband frequency is scaled by 0.99. This avoids measurement
technique related fails in test.
The chirp spectra test case was updated to use for RMS level criteria
for testing the level of signal. The peak level was less robust and
caused unnecessary test fails.
The option to not open plot windows during test is set. It improves
speed of test and avoids display clutter.
Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
This patch updates the testbench binary path into current default
install location when built with scripts/host-build-all.sh.
The path to test topologies is updated also.
Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
This patch adds 50 kHz into SRC generator script for std and tiny
profiles. The src generator script is cleaned up and the default
conversion matrix is moved into caller script for easier maintenance.
The plots appearance is improved and the generated coefficients code
look is improved to pass the git pre- and post-commit script
requirements.
The SRC test bench scripts are updated for changed locations. A SRC
playback topology is used for test bench and real device usage.
Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
Seppo Ingalsuo