This is now on AOSP at https://android-review.googlesource.com/#/c/44959/ and its dependencies. It was misplaced during the conversion from a previous version control system to Gerrit / git, and recently excavated. It generates 1/2 the table, and probably had a manual tweak for the other 1/2.
On Monday, February 6, 2012 7:08:16 PM UTC-8, Glenn Kasten wrote: > > I'm sorry I don't know the answer to your specific question, but I > believe that AndroidResamplerSinc code has not been qualified recently > (meaning it has not been verified for correctness, performance, audio > quality, etc.). It's probably still fine, it just hasn't been tested > recently AFAIK. If you do get it to work, please post your results > here -- it would be great to have a better sample rate converter > available than the default, and knowing the characteristics of these > and other SRCs will help in the evaluation. > > On Feb 2, 5:51 pm, bincart <[email protected]> wrote: > > /* > > * These coeficients are computed with the "fir" utility found in > > * tools/resampler_tools > > * TODO: A good optimization would be to transpose this matrix, to > > take > > * better advantage of the data-cache. > > */ > > > > I found upper comment in AndroidResamplerSinc.cpp. > > > > But, I fail to find tools/resampler_tools in my android sources. > > > > Android Resampler makes some harmonic noise in case of 44.1khz -> > > 48khz up-sampling. > > > > I wanna optimize FIR setting, but I can not find optimization tool. -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting
