On 29 November 2011 07:31, Kurt Taylor <kurt.tay...@linaro.org> wrote: > Hi everyone, > > Last week I did an initial drop of the end to end audio test we have been > discussing. > > The idea is fairly simple, play a sine wave and test the audio stack by > sampling/testing the sine back in via loopback cable. The app is called > testfreq and is driven by a script called e2eaudiotest. It opens and > configures the audio device, takes a sample and then does a discrete fourier > transformation to find the frequency using the fftw3 library. The test > script driver uses speaker-test to play a sine wave at A 440, which for now > is the test frequency. It's still basic at this point, but it does work on > my system. There is a lot of additional things I'd like to do, initial stack > configuration, passing in the device, passing the test frequency, doing more > auto detection, clean up the code, etc, but I wanted to start getting > feedback. Any and all would be appreciated. > > Have a look, and if you have a loopback cable, give it a spin: > > http://git.linaro.org/gitweb?p=people/kurt-r-taylor/e2eaudiotest.git > > You can also read more about it and check my progress here: > > https://blueprints.launchpad.net/linaro-multimedia-project/+spec/linaro-mmwg-e2eaudiotesting-basic > Great job!
Though, how bad is the idea of separating out stream capture from DFT analysis part ? That could make testing simpler by just 'piping' in the captured data real-time or from a recorded file using standard apps like 'arecord' or some android app. cheers! -jassi _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
