similar to: c++ comments in vorbis source

Hi, I need a psychoacoustics model for some experiments and would like to use the one included in vorbis. Is there any documentation about how to use it? Looks like the relevent code is in psy.c, but I can't go further. Also I would like to know whether I can be of any help in vorbis. I have some knowledge in speech coding (I doing my master at the University of Sherbrooke's speech

Hi all, I'm quite new to Vorbis, so please excuse me if I'm writing complete nonsense (and, if possible, tell me where I'm wrong). While searching for optimization possibilities in lib/psy.c, I found the following piece of code in _vp_compute_mask(): if(p->vi->smoothp){ /* compute power^.5 of three neighboring bins to smooth for peaks that get split twixt

Hi, I have looked through the documentation available from the downloads and the web and haven't yet come across a block diagram which shows exactly how the process of going from a .wav file to a .ogg file works. I suspect it is the same as the mp3 process (with a different psychoacoustic model). I found this document:

Hi all, This should please all those who want to know more about Speex or Vorbis. Monty and I have just finished writing this paper: "Improved Noise Weighting in CELP Coding of Speech - Applying the Vorbis Psychoacoustic Model To Speex" which you can get at: http://people.xiph.org/~jm/papers/aes120_speex_vorbis.pdf It's probably the best description of the Speex encoder to data and

Hi all, This should please all those who want to know more about Speex or Vorbis. Monty and I have just finished writing this paper: "Improved Noise Weighting in CELP Coding of Speech - Applying the Vorbis Psychoacoustic Model To Speex" which you can get at: http://people.xiph.org/~jm/papers/aes120_speex_vorbis.pdf It's probably the best description of the Speex encoder to data and

Hello, I have succeed in compile oggencoder to create ogg enc.exe, but I have put libraries in my visual c++ project( ogg_static_d.lib vorbis_static_d.lib vorbisenc_static_d.lib). What are these libraries? What does they contain? In my visual project, I have just audio.c;encode.c; getopt.c; getopt1.c;oggenc.c;platform.c;utf8.c in the source files. I don't know where are the files (MDCT.c; PSY

Hello folks, An incredible amount of work got done in the past week and a half. And I missed the arbitrary, meaningless launch deadline. Not much new there... In the past week, developers contributed plugins for Winamp (thanks Jack and Michael), and kmpg (thanks Martin). Sonique added Vorbis support (thanks Andrew), although that won't appear in the 1.5 version just released; expect to

Hello folks, An incredible amount of work got done in the past week and a half. And I missed the arbitrary, meaningless launch deadline. Not much new there... In the past week, developers contributed plugins for Winamp (thanks Jack and Michael), and kmpg (thanks Martin). Sonique added Vorbis support (thanks Andrew), although that won't appear in the 1.5 version just released; expect to

Nothing on a branch yet; I'll be building a temp branch for my changes soon. First, I'm eliminating ordering dependancies in vorbis_block structures. They'll be totally sepreate and vorbis_analysis won't have a global state in vorbis_dsp_state that requires them being done in order. That way, a parallel-threaded encoder can run multiple vorbis_blocks through multiple

Hello! Some minor bugfixes... source: psy.c function: _vp_psy_init 1. '-' or '+' in this line? maxoc=toOC((n*.5f - .25f)*rate/n)*(1<<(p->shiftoc+1))+.5f; maxoc=toOC((n*.5f + .25f)*rate/n)*(1<<(p->shiftoc+1))+.5f; 2. I know: sizeof(float *) and sizeof(float) are 4 bytes long, but... old lines: p->noisemedian=_ogg_malloc(n*sizeof(float *));

dear R wizards: is it possible to use a postscript font symbol as a plot symbol? in particular, I want to use the four postscript symbols for playing cards (club, heart, spade, diamond) as points. In LaTeX, these four are \Pisymbol{psy}{"A7} \Pisymbol{psy}{"A8} \Pisymbol{psy}{"A9} \Pisymbol{psy}{"A10} and what I would love to do is place them, at say, (x=1,y=1),

Hello, I'd like to know there is any place (web, document...) where I can see which the vorbis' psychoacoustic model is, at least for the reference encoder (how it works, algorithms, filter banks, scalefactors, etc., or if it doesn't use any of this things at all...), or if the only way of looking at it is within the psy.c. I've been looking for it in the Vorbis' site and in

This patch enables compilation with GCC 4.7.1 and --enable-shared=yes --enable-static=no --enable-vorbis-psy -------------- next part -------------- diff -r -u speex/configure.ac speex/configure.ac --- speex/configure.ac 2013-04-24 19:08:00.710564608 +0400 +++ speex/configure.ac 2013-04-24 20:04:33.589310544 +0400 @@ -204,7 +204,7 @@ AC_DEFINE([TI_C55X], , [Enable support for TI C55X DSP])

Hi, I have included the oggvorbis encoding and playback stuff in the Linux-Mandrake distro back in August 2000. At that time I put the "nightly CVS" version, which worked just fine. Then on Mon Nov 27 I noticed some RPM's labelled "1.0beta3" on the website so I upgraded with these ones. Since then we have had some serious problems in encoding: approx 20% of the WAV

(This is almost out of topic but anyway...) It is surprising how little research effort have been put into psy-acou models for CELP. The basic problem lies in that it is not easy to alter the LP model without distroying the minimum-phase property (ie. the stability of the predictor). That leaves us with psy-acou modelling of the noise-part only. However, my own research is in constrained

Hi, I've read the Vorbis stereo documentation on square polar mapping and currently reading the source code to understand it. But there are some things which I don't quite understand and hope I can get some guidance on. I understand the decoding/decoupling part as it is the same as the one described in the stereo docs: From mapping0.c: /* channel coupling */

Hi folks, I'm doing a merge of my current branch onto the mainline (for testing) today. I believe it to be stable. Just a little more vorbisfile testing. After the merge, I have a few more patches to apply, then onto cascading/coupling. New stuff: Floor backend 1 and residue backend 1; both are present, but the mainline modes won't use either yet. Naturally, both are enabled for

kalish at psy.uwa.edu.au wrote: > > I'm a newbie at R, and can't get libraries to really work. > I did this: > > library(help = mva) > cancor Canonical Correlations > cmdscale Classical (Metric) Multidimensional Scaling > dist Distance Matrix Computation > hclust Hierarchical Clustering

During the interesting interview that binaryfreedom has made with Monty and Jack, Monty mentions cascading, a feature that will be added, quote: "Cascading is the ability to make multiple passes through the frequency spectrum, iteratively filling in more detail, like a progressive jpeg". What are the advantages of something like this - does this generally improves quality or is it used

Hi all, The following is a trivial patch to psy.c, but combining the two loops saves a percent or two (according to gprof). ================================================================= --- psy.c Mon Jun 19 12:05:57 2000 +++ - Wed Jun 28 15:14:17 2000 @@ -550,12 +550,11 @@ frameno++; memset(flr,0,n*sizeof(double)); - for(i=0;i<n;i++)work[i]=fabs(f[i]); - - /* find the highest