search for: bartlett_hann

what does the exhaustive model search do? Does it try all of the functions listed under "-A" to find the 'best', i.e. bartlett, bartlett_hann, blackman, blackman_har- ris_4term_92db, connes, flattop, gauss(STDDEV), hamming, hann, kaiser_bessel, nuttall, rectangle, triangle, tukey(P), welch. Or is that something else? I've been using the -e option for a while in my flac encoding, but for something that sounds like it sho...

...a5a480d475a2098eea1eb07bb03cef > > Can anyone see anything I've missed? > > Cheers, > Erik > -- > Looking good, clearly a couple of things I?d forgotten all about! Two things: 1) Shouldn?t we give Martijn van Beurden a mention for his great work on the "bartlett, bartlett_hann and triangle functions? and "New apodization functions partial_tukey and punchout_tukey? code? 2) There is a typo under ?Build system?: "buiuld systems? Maurits

Hi, I was doing some speed and compression comparisons with various apodization/windowing functions, and found out that the definitions for the bartlett and bartlett_hann window in the FLAC codebase have been wrong since their introduction. The attached patch fixes that. Furthermore, I found some peculiar behaviour of the gauss apodization that seems to expose bug. Using different windows does usually not change the encoding speed (only the number of them), bu...

...kets are just to refresh memories, I?d leave them out of the actual changelog. * Improved efficiency of 24 bit decoding. (https://git.xiph.org/?p=flac.git;a=commit;h=ea0d5ddadc6902e873983c89f473130b3bb6625f) * Faster encoding using SSE and AVX. (many separate patches by lvqcl) * Fixed bartlett, bartlett_hann and triangle functions. (http://lists.xiph.org/pipermail/flac-dev/2014-August/004983.html) * New apodization functions partial_tukey and punchout_tukey for improved compression. (http://lists.xiph.org/pipermail/flac-dev/2014-August/005000.html) * Retuned compression presets to incorporate new apo...

Martijn van Beurden wrote: > Hi, > > I was doing some speed and compression comparisons with various > apodization/windowing functions, and found out that the > definitions for the bartlett and bartlett_hann window in the > FLAC codebase have been wrong since their introduction. The > attached patch fixes that. How it affects compression ratio? > Furthermore, I found some peculiar behaviour of the gauss > apodization that seems to expose bug. Using different windows > does usually not...

On Jun 10, 2012, at 21:32, Linda A. Walsh wrote: > what does the exhaustive model search do? > > Does it try all of the functions listed under "-A" to find the 'best', > i.e. bartlett, bartlett_hann, blackman, blackman_har- > ris_4term_92db, connes, flattop, gauss(STDDEV), hamming, hann, > kaiser_bessel, nuttall, rectangle, triangle, tukey(P), welch. > > Or is that something else? > > I've been using the -e option for a while in my flac encoding, > but for...

...the cost of cutting the encoding speed to 1/3th and slightly slower decoding. The use and internals of these windows are explained in the documentation that is in the patch itself. Note, this patch includes the patch I mailed a little more than a week ago, which fixes the triangle, bartlett and bartlett_hann windows. -------------- next part -------------- A non-text attachment was scrubbed... Name: 0001-Add-partial_tukey-and-punchout_tukey-apodization-fun.patch.gz Type: application/gzip Size: 4324 bytes Desc: not available Url : http://lists.xiph.org/pipermail/flac-dev/attachments/20140810/1eaa7d40/a...

...not an expert on the guts of FLAC, but there is some information about this at: http://flac.sourceforge.net/documentation_format_overview.html and scroll down to "MODELING". > Does it try all of the functions listed under "-A" to find the 'best', > i.e. bartlett, bartlett_hann, blackman, blackman_har- > ris_4term_92db, connes, flattop, gauss(STDDEV), hamming, hann, > kaiser_bessel, nuttall, rectangle, triangle, tukey(P), welch. > > Or is that something else? That is something else. > I've been using the -e option for a while in my flac en...