Displaying 20 results from an estimated 2000 matches similar to: "psychoacoustic model description"
2002 Jul 09
1
psychoacoustic model description
Hello!
I don`t know C or C++, but I want to prepare some psychocuostic
experiments in the MatLab. Shuold you tell me where I can find
detailed description of the Vorbis psychoacoustic model?
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2011 Apr 25
3
Possibility of Incorporating a psychoacoustic model in CELT
Good Morning;
Iam asking whether any one have knowledge about is it possiple to incorporate a
psycoacoustic model?(specifically?I mean ?MPEG-1 psychoacoustic model 1) into
the CELT codec(any version even older versions of the coder,?no matter) Iam
using version 0.3.2.
Kind Regards;
Osama.
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2003 Dec 28
1
psychoacoustic model
Hello everyone,
I need to know which kind of psychoacoustic model is
used in vorbis to encode signal.
Thanks for answers
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2009 Aug 04
1
Vorbis psychoacoustic model
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
2003 Jun 16
4
Launch of OggHelp.com
Hello everyone,
I would like to bring to your attention the new website that I have been working on. It is a portal for articles, links, and support for everything related to Ogg Vorbis. It just started and hopefully will be evolving rapidly.
http://www.ogghelp.com
I have modeled it after the group of successful Help pages such as http://VCDHelp.com and DVDHelp.com.
I've been
2003 Mar 12
2
encoder block diagram
I've made a block diagram of the encoder because I tried to find out, how it works
http://stoffke.freeshell.65535.net/ogg/block.html
Although there are specifiation docs, that give very
detailed information about single aspects of the encoding (or decoding) ,
I'm missing documenations that give a more general overview,
about how the encoder works.
(Vorbis Illuminated seems a bit
2001 Nov 01
1
Lossy Audio Compression Research
Hello everyone,
I'm a student at the Universtiy of Delaware, and will be soon starting
some research on the effects of lossy audio compression on speech sounds. I
will be preforming test with both mp3 and vorbis.
First of all, if I use the '--ogg' switch to lame, does lame use GPSYCHO
to encode the wave, or some other psychoacoustic model (perhaps one designed for
2003 Aug 21
3
Ogg Vorbis SDK.
Hi, I've started making an Ogg Vorbis SDK, as per IRC topic instructions :)
Some questions:
Its just targetting MSVC right? Not borland/whatever?
Should it install the headers/libraries in the msvc dir (c:\Program Files\Microsoft Visual Studio\VC98\(Include|Lib)), or should it put them in the same directory as the document (c:\Program Files\Ogg Vorbis SDK\(Include|Lib)), and have the sample
2012 Aug 21
2
Any android source client for icecast ?
Hi Guys,
2012/7/20 juantello <juantello1234 at gmail.com>:
>
> Hello.
>
> Icecast client for android
> http://droidtools.sourceforge.net/content/icecast-client-android
> http://droidtools.sourceforge.net/content/libogglibvorbis-and-libshout-libraries-android
I just finished compiling an android version of our reshaped shine
encoder [1] there:
2012 Apr 23
1
ggplot2 - geom_bar
Hello,
I've some problem with the ggplot2. Here's a small example:
--8<--
library(ggplot2)
molten <- data.frame(date=c('01','01','01','01',
'02','02','02','02'),
channel=c('red','red','blue','blue',
2004 Aug 06
2
Psycho Acoustic models i Speech Coding
Hi,
Does anyone have an idea about the possibility to apply psychoacoustic
models as the ones in mp3 or AAC to a CELP coder? Thanks!
/Pontus
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2002 Jul 09
1
Vorbis Block Diagram
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:
2009 Apr 07
2
Using as.formula() with the reshape package cast
I am trying to use the "cast" function from the reshape package, where the
formula is not passed in directly, but as the result of the as.formula()
function.
Using reshape v. 0.7.2
I am able to properly melt() by data with:
> molten <- melt(x, id=1:2)
then I can properly cast with this:
> cast(molten, days ~ variable)
but if I try
> cast(molten,
2010 Sep 25
1
improve CELT
Hi,
In paper" A High-Quality Speech and Audio Codec With Less Than 10 ms Delay", you are mention that:
There are still several ways to improve CELT, such as by incorporating better psychoacoustic masking in the dynamic bit allocation. This is a difficult problem both because there are few bits available for coding the allocation and because the analysis window is short.
it is
2000 May 09
1
idea for a new algorithm
Hello vorbis developer!
I'm not very experienced in informatics, cause i'm only an audio
engineer and sorry for my broken english but i have an idea...
After the filterbank the maximum aplitude in each band decides
about the nessesary bits, then the psychoacoustic model decides how
much of the signal can be truncated without hearable noise.
What do you think about quantising the
2009 Aug 17
3
Reshape package: Casting data to form a grid
Dear R Users,
I'm trying to use the 'cast' function in the 'reshape' package to convert column-format data to gridded-format data. A sample of my dataset is as follows:
head(finalframe)
Latitude Longitude Temperature OrigLat p-value Blaney
1 -90 -38.75 NA -87.75 17.10167 NA
2 -90 135.75 NA -87.75 17.10167 NA
3 -90 80.25
2004 Feb 05
1
Psychoacoustic model
We've implemented a vorbis decoder based on Tremor and as part of the
documentation we're also writing about psycho acoustic models and
encoding.
We're quite up to date with the decoding process and psycho acoustics
in general but unfortunately not on the psycho acoustic encoding used
in Vorbis.
We have a few questions that would we would be very thankful to have
answer to:
Which
2004 Aug 06
1
Psycho Acoustic models i Speech Coding
(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
2010 Dec 05
1
What CELT version to choose
Hi,
?I'm trying to improve CELT according to the bit allocation problem and
psychoacoustic masking which was mentioned in the paper "A High-Quality Speech
and Audio Codec With Less Than 10-ms Delay". What software version do you prefer
for me to choose?on my study?
Best Regards,
Osama Y. Fadhil.
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2002 Jul 08
1
Vorbis Block Diagram
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: