similar to: optimization progress

I saw some mail go by a bit ago about doubles-vs-floats, but I seem to have lost it. I'm interested in rewriting the mdct code using Altivec on MacOS X. Altivec doesn't support doubles, though -- the only floating point vector type is single precision floats. Vorbis currently has doubles everywhere -- is this really necessary? Doubles are supposedly faster than floats in the PPC

Hi again! I have some other suggestions/modifications. 1. Bitrate scaling by frequency in vorbis_encode_init: bpch=(long)((float)nominal_bitrate/(float)channels*44100.0f/(float)rate); With this modification, if we use -b128 at 22khz files, the OGG file will be 128kbit/s, not 64kbit/s ... 2. Probable quality bug: I tested some floating point constants (recalculated them (see below) and encoded

I've had squat running on dovecot 2.0 and have been updating all users mailbox indexes nighty via cron with this command: doveadm -v search -A text xyzzyx I've just updated to 2.1 and I'm migrating to lucene indexes, but reading the documentation I'm having a hard time understanding the semantic differences between indexing and rescanning. If I were to continue to run an

(well, YMMV, but it got me 12% on Mac OS X Public Beta on my test case). In vorbis/lib/scales.h, add the following after fromdB() #define sqrt_fromdB(x) (exp((x)*.11512925*0.5)) In vorbis/lib/psy.c at the bottom of bark_noise(), do: < noise[i]=sqrt(fromdB(v)); > noise[i]=sqrt_fromdB(v); This avoids the sqrt() call entirely by just doing it as part of the exp(). (I'd

Hi, I've been struggling for almost a week now, but I can't get the following setup to work. At home I have class A network: 10.0.0.0/16 with a masquerading gateway 10.0.0.1 running tinc. At work (http://www.eastsite.nl) we have a 192.168.0.0/24 network. The gateway is called 'ed' I've set up tinc on 'gateway' and everything is working fine from

I was wondering about what the near and longer term future directions for optimization of Vorbis decompression are. I am interested in using it as a replacement for MP3. But it seems at this point (not certain about this) that Vorbis doesn't really have much optimization implemented yet. By this I mean, for example, implementing something like MMX x86 optimzations in order to speed up the

Well, here you are. 24k; sorry if I'm not supposed to put this size things in your mailbox, didn't know where else to put it. And you all are subscribed to vorbis-dev, after all. I'm not that good at breaking patches apart, so it's one big patch. Sorry. Overview: configure.in make profiling easier & more useful decoder-example.c (#if 0'ed) dither output;

So, it turns out (and another implementation actually explicitly mentions it) that LSP->LPC computation using the FIR algorithm is very sensitive to noise (iterative algorithm) and really really requires doubles [we're not kidding]. This was complicating things for folks pursuing fixed point implementations, and also was a potential source for bugs if FP optimizations got out of hand. This

Hi, I think that the introduction of the lsp_look lookup array isn't ideal and found a better change that can be applied. in floor0_map_lazy_init() you can replace look->linearmap[W][j]=val; by look->linearmap[W][j]=vorbis_coslook(M_PI*val/look->ln); and in vorbis_lsp_to_curve you then replace float w=vorbis_coslook(wdel*k); ... }while(map[i]==k); by float w=map[i]; ...

Hi all, I recently noticed that Vorbis shlibs export several symbols which are not present in it's public header (for a total of 85 symbols, see attach). Would it make sense to filter them via -fvisibility=hidden and -Wl,--version-script? I attached a draft patch. Best regards, Yury Gribov -------------- next part -------------- _book_maptype1_quantvals _book_unquantize __bss_start

Excuse me, if the following is FAQ or nonsense, I'm new to R (and the list)! After trying to import a textfile of 184897 Bytes, R (v0.63.0 on Linux 2.0.35/DLD 5.4) gives the following error message: > read.table ("db.out") Error: heap memory (1953 Kb) exhausted [needed 150 Kb more] > Is there a possibility to increase

I have no trouble to install fusion.dll regsvr fusion.dll will however only work if msvcrt70.dll is in the system32. vcrun2005 is installing properly. However it is not passing the check of the Installshield (i.e. something is not fully/correctly registered). doing the Winetrick before starting the Installshield is not changing a thing. To write a script I would have to learn programming and

>Tracks get listed like that in all players. >Since I'm not on the dev team, I'm assuming it's only for the beta, and >only >while they are still working on a tag system. Actually, artist and track info can be stored in a file, and if it's present I know that at least the WinAmp plug-in can read and display it. It's really just a matter of the encoder storing

https://bugzilla.samba.org/show_bug.cgi?id=5287 Summary: FreeBSD pre10 compilation warnings report Product: rsync Version: 3.0.0 Platform: x86 OS/Version: FreeBSD Status: NEW Severity: minor Priority: P3 Component: core AssignedTo: wayned@samba.org ReportedBy: 14709c93@mailinator.com

Hey guys, I just released my new MacOSX-based OpenAL implementation...part of it is a Ogg Vorbis decoder based on the 1.0 reference libraries. I spent some time optimizing them and found that many of the hotspots in libvorbis are perfect candidates for vectorization, so I wrote Altivec versions of them. The end result? Decoding of a .ogg file is between 30 and 50% faster on a Mac with an

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi!, ok here is my question, I have 2 ISP''s connected to the firewall, and I already set up th routing tables, I have a 256k and a 1.5m connection, and I want a couple pcs from the internal network to masquerade through the 256k connection and the rest through the 1.5m connection, how do I setup this on shorewall??? I am not subscribed to the

This question is a clone of my stackoverflow question which never got answered (o_O). Therefore I am posting it here. I would really like some inputs if possible. I am currently building some applications which make use of HDF5 files. I have already taken a look at the hdfgroup website with regards to dataspace <https://support.hdfgroup.org/HDF5/doc/H5.user/Dataspaces.html> and I think I

Hi, I'm trying to assign a complete USB Hub to my Windows 10 guest, using libvirt 1.3. Following the documentation, I tried adding the following to the definition of my guest: ... <devices> ..    <hub type='usb'>       <address type='usb' bus='1' port='10.2'/>     </hub> .. </devices> To get the correct port, I used lsusb:

1. What does this have to do with R? 2. If it concerns computational biology, the Bioconductor Help list may be a better place to post. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Tue, Aug 1, 2017 at 2:28 AM, Koustav Pal

1. This relates to the package *rhdf5* and its implementation of the HDF5 dataspace interface. I am asking for an example of how other people who use this package make use of the HDF5 data space interface exposed by the library. Longer answer: As per my understanding, the dataspace interface exposes data locations within a dataspace, but even while retrieving data from an hdf5 file using methods