similar to: Trivial 12% performance gain in encoding

Displaying 20 results from an estimated 300 matches similar to: "Trivial 12% performance gain in encoding"

2000 Sep 13
3
end-user mode for a moment (side-by-side tests)
Smack my curiosity, but I encoded some songs in Vorbis mode 2 and tried to be able to distinguish the difference between that and the uncompressed WAVs. (*smacks self*) but here's what I noted: It's actually kind of hard to tell the difference :) (and I consider myself to have a decent set of ears, though not anywhere near the best) I got my accuracy to about 90%, but I couldn't
2001 Jan 17
0
bitrate scaling by freq / quality bug ? / comments
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
2000 Dec 29
0
bark_noise
Hello dev people, Can someone please explain me why bark_noise works so well? I can't find any references to theory. I think Monty just made it up (in the Netherlands we say: he sucked it out of his thumb :-) ). Especially why the 1/|frequency distance| thingie is a good spreading function. I tried several different ones, but the original is still the best overall. Some of the alternatives
2000 Oct 31
3
bark_noise
I am experiencing some difficulties with vorbis on my LX164 alpha. Specifically, in bark_noise (psy.c) I see the following behaviour on the first pass through the function: val=-3.4e38 del=1 noise[0]+=val*del noise[1]-=val*del norm[0]+=del norm[1]-=del del=1 noise[1]-=val*del <== here is the problem At this point, noise[1]==3.4e38. We are trying to add another 3.4e38 to it and this is
2001 Feb 19
1
problem loading program..
I'm loading a program from CD-ROM .. the splash screen comes up, but then a dialog box comes up with "Failed to initialize ..." btw, I'm running wine under the 2.2.16 linux kernel and the partition I'm running this program from is a win2k ntfs partition (the program is not limited to win2k however.. just what i have) Here are some of the errors (randomly selected) that
2000 Sep 11
1
Mac OS X DP4 patches
I've tweaked Tim Wood's Mac OS X DP4 patches so they compile and run reasonably well on OS X DP4 and added a couple minor tweaks of my own. I've placed diffs from the head revision in cvs at my web site: <http://www.gizzywump.com/vorbis-macosx-diffs> This includes a new file at vorbis-tools/libao/ao_macosx.c, which is in the diff. Note that "patch" doesn't seem
1998 Nov 19
0
R data import problems
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
2000 Aug 22
1
optimization progress
Hi all, The decoder is down 30% execution time, identical bit output. Didn't get the mdct yet; 1024 point mdct is a bit much to brute-force, and I'm not going to hand-unroll the whole thing either (the machine- unrolled version produced a 1.5M executable; understandably, it wasn't very fast. Still waiting for processors with 1.5M L1 code caches ;-) Slowest parts now are: -- mdct --
2000 Aug 28
3
optimization patches
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;
2000 Sep 10
3
Adding oggenc support for files other than WAV?
Is anyone working on making oggenc use some nice library that reads lots of different audio file formats so that people can encode from files other than WAV? For example, the 'AudioFile' library (just found it via a search on freshmeat) reads wav, aiff, aiff-c, .au, and .snd. Maybe there are other better libraries (OpenAL, maybe), but this library does what I want (read AIFF). -tim ---
2001 Jun 06
2
Suspiciously broken filesystem
I appear to have a broken filesystem on this box to the point where I am probably going to rebuild the system since I have lost trust in it.... I was wondering if there was any reasonable postmortum work I could do on it before it gets rebuilt. History is that the laptop has a much mauled partition set on it - initially it came with 100% win2k, I then shrunk that and added linux (a RH71 install
1999 Apr 01
2
need help installing ESS on Win95
Has anyone successfully installed ESS on Win95? I have emacs version 19.34.6 and R version 0.63.3. The ESS README and Makefiles seem pretty Unix-specific. -- Terry J. Westley, Principal Engineer Veridian Engineering, Calspan Operations P.O. Box 400, Buffalo, NY 14225 twestley at buffalo.veridian.com http://www.veridian.com
2003 Feb 24
5
-bash: /bin/rm: Argument list too long
Folks: Is there a limit to the number of arguments that can be passed to fileutils programs such as mv or rm ? If yes, is it filesystem dependant/kernel config dependant/fileutils version dependant? Can this maximum limit be tuned/controlled ? I googled on it a bit, but couldn't find anything much more relevant than a message in the OS-X forum.
2002 Nov 05
1
group privileges on newly created files?
Just curious, I know you can force a creation mask using "create mode", but is there any way to enforce under what group ownership a file/directory is created? My users belong to several groups, and I want new files created as owned by a specific group... Thanks in advance, -Rob
2004 Aug 27
0
auto-gain, or different gain between incoming and outgoing calls (EURO ISDN PRI) ?
Hi, I am using Asterisk with various brands and models of SIP phones. Especially the Welltech phones LP201 are particularly nasty with volume and echo. Even with the input gain (microphone) of the Welltech set to the max, the PSTN end can hardly hear the SIP user on incoming calls. Ztmonitor also only gives a level of around 3 === from the SIP phone. I have to increase the rxgain and txgain
2003 Oct 28
5
RX gain TX gain
I have an X100p card....and it is hard to hear the person on the other end. Should I mess with these values? I have heard both yes and no to this question in the past. If yes, how much louder should I make them? Thanks, MIchael
2006 May 10
2
gain value from form
I have the following form <%= start_form_tag :action => ''rejectQuoteSave'', :id => @project %> <p><label for="offer_reason_rejected"><span class="required">* </span>Reason</label><br/> <%= text_area ''offer'', ''reason_rejected'' %></p> <%= submit_tag
2003 Nov 22
1
performance gain in data journalling mode
hi, If I understand correctly, full journalling mode gives better performance for applications that do a lot of updates in O_SYNC. Could you please explain how this is possible? Doesn't full data journalling do twice as many writes as meta data journalling? han
2011 Apr 15
1
sangoma card rx/tx gain level
Hey Guys! We had echo issue before so we replaced old PRI card with Sangoma A102D HWEC. Now my question is i set rx/txgain level 0.0 default do i need to touch this value or default is best. I have read on google and people say it should around 14844 on ztmonitor for rx/tx level same. I just use milliwatt and test my default 0.0 rx/tx level and it come around 4600. Do you think i need to make
2013 Jun 06
0
Using Loofah to gain control of what HTML tags get sanitized
Hi everyone I''m Kasper. One part of<http://weblog.rubyonrails.org/2013/5/27/rails-google-summer-of-code-projects/> the Rails Google Summer of Code participants. This means I will replace the venerable html-scanner with Loofah, picking up where this issue left off: https://github.com/rails/rails/issues/2550. Rafael França was assigned to that issue and he is my mentor during the