search for: psychoacoustically

Displaying 20 results from an estimated 113 matches for "psychoacoustically".

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. -------------- next part -------------- An HTML attachment was scrubbed... URL:
2002 Jul 08
1
psychoacoustic model description
Hello, Tell me please where I can find detailed description of the Vorbis psychoacoustic model? <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe
2000 Jul 04
1
Using the vorbis psychoacoustics model
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
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 __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a
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
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? <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-dev-request@xiph.org'
2001 Jan 11
0
recommended dsp and psychoacoustics texts?
xiphmont@xiph.org (Monty) writes: > Really, folks, several of you are debating the most fundamental of signal > processing concepts. Go get an undergraduate level book on signal > processing (eg, _Understanding Signal Processing_ or _Signals and Systems_) > and read it. This is all covered first month. On this subject, could you (all) recommend some good vorbis-relevant dsp and
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
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
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 Mar 14
0
encoder block diagram
I've made 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 outdated,
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:
2001 May 29
2
One codebook for all audiofiles?
[ I'm not in the list because I didn't find a digested version; please move the lists to sourceforge.net, and we would have the digested version. I read the replies from the archive. ] Hello. Would it be possible to allow Vorbis use the same codebook for multiple files? I could keep a 650 MB codebook on CD-R and use that for all my audiofiles. If that is possible, how much the
2009 Mar 30
3
Encoding multiple tiny audio files
Hi all, I want to make a static database containing hundreds of thousands of very short audio files, each having not more than 100 milliseconds. These are made by splitting larger audio files into tiny pieces. I encode all the little files separately, but do not store 3 vorbis header packets, which are the same for all the files. I do not use ogg stream, only store plain vorbis packets.
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
2007 Apr 23
1
Getting masked FFT data out of libvorbisenc
[Apologies if this gets through twice. I sent it first without subscribing, but it seems like it got stuck in the moderation queue, so I subscribed and re-sent it.] I'm doing some work on audio fingerprinting for a school project (more precisely, my master's thesis. I got a hint on #vorbis that I might want to look into the internal floor representations in libvorbisenc to get out audio
2005 Jun 16
4
sample, windows & vbr
Hi, I'm a newbie to audio compression. And I have several question about ogg. 1. How many bits a vorbis sample take ? does the sample size 16 bits ? like the mp3 ? CMIIW 2. How do a decoder recognize how many sample it takes in a second ? does it related with the code books ? 4. Does vorbis use VBR ? 3. What is function of the Windows ? and what is the output of the windows ? Thanks
2000 Jun 28
0
response to The r3mix review (fwd)
Yes, r3mix found a bug, no it's not a serious one. It's amazing how something small gets overblown like this. The r3mix reviewer basically just hit the known short block trigger bug when doing his tests. We've known about this bug since before the beta and haven't fixed it yet because it was considered relatively minor; [ironically] it mostly affects test samples with a single
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 <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'speex-dev-request@xiph.org' containing only the word 'unsubscribe' in the