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Discussion Groups | Audio Signal Processing
Technical discussions related to Audio Signal Processing (digital effects, acoustics, noise reduction, musical signal processing, etc).
Search Results for "mp3"
Mp3 encoder [2 Articles]
akash damodar sureka - Oct 8 2003
Hi all,
do u know which is the best MP3 encoder, i mean LAME, Thomson or Fraunhofer???
How is the testing of MP3 encoder carried out since no standard test vectors are availabl... 
C code for psycho acoustic model in mp3 encoder
tulasi syam - Dec 6 2007
hi all,
i am working on mp3 encoder. im doing project on implementation of FFT and psychoacoustic models for mp3 encoder in C language. i want help regarding finding the c... MP3 Player - Need Info
Daya Sagar - Jan 5 2005
Hi All,
My Next project/product is on MP3 (stand alone).
I have not done any product related to MP3 till now.
Right now the idea is to develop a MP... Re: ´ð¸´: RE: Re: MP3 coding --recommended books
Sigmund Gudvangen - Sep 23 2003
Le Mardi 23 Septembre 2003 06:29, hemanth kumar écrivit :
> Hi Manju,
>
> We too have gone thru the same pain, trying our luck with all sorts of
> search engines. this was the b... Require IMDCT and Synthesis Polyphase filter algorithms.
Rhishikesh Agashe - May 2 2006
Hi,
I am working on Mp3 Decoder. I am trying to find an
optimized implementation of IMDCT algorithm and
Synthesis Polyphase filter algorithm for Mp3 Decoder.
The reference c... MP3 coding --recommended books [5 Articles]
Manjunath - Oct 7 2002
Hi all,
Could you please advice me regarding which book to buy for mp3
algorithms.Preferable it should contain description of the algorithm,
sorce code etc.
Thanking you,
Ma... Mp3 Algorithm [16 Articles]
Jacobs, Ben - Feb 16 2001
Hi
Where can I find Mp3 compression algorithms ?
Ben
... Input/Output to MP3 Decoder on ADSP-218x EZ-ICE/KIT
bhagawan reddy - Oct 10 2003
Hi,
I am working on Hardware Interfacing of MP3 Decoder code on ADSP-218x EZ-KIT/ICE.
MP3 Decoder code was succesfully tested on ADSP -218x Simulator .File Input/... codecs and file format [6 Articles]
kaus...@yahoo.com - Sep 1 2008
Hello everybody,
-I often get confused between an audio codec and an audio file format. Doesnt a .mp3 extension necessarily mean that the file has been encoded using 'mp3' encodin... mp3 coding [2 Articles]
hemanth kumar - Sep 10 2003
i am working on a Mp3 codec,can anyone tell me how the
bitstream contains 2 granules of data while the MDCT
block reduces the number to half the number of the in
values.
... Problem in decoding g729 audio samples [2 Articles]
krav...@gmail.com - Jun 13 2008
My aim is to dump the G.729 encoded audio samples packetized in RTP payload and then convert the G.729 encoded samples to MP3 format.
What i'm doing:
1. I got the G.729 encod... mp3 file with ID3v2.2.0 tag
pk_s...@rediffmail.com - Feb 1 2005
Hi all,
I am working on a project related to ID3 tags.
Can anyone tell me from where to get mp3 files with old version of ID3v2 tag? I mean ID3v2.2.0 or earlier
Thanks in adv... Regarding MP3 frame format
kiran kumar - Mar 22 2006
hello ,
i am doing my project in mpeg-1 audio layer-3 audio decoder using arm7.
iam facing problem in understanding the bitfield information of sideinformation in... Please help how to handle Bit Reserviour in MP3
RAMESH NAIDU - Sep 25 2006
HI All
I am working mp3 audio decoder and i am confused how to handle Bit Reserviour when main_data!=0. For how many frames does main_data of one frame can spread typically... novice question: mp3 players
rahul saxena - Nov 25 2003
hello group members,
i want to make a software in MATLAB or C to play mp3 files. Since I am new to this field, it would be very nice if somebody could tell me as to what things... appearance of new frequencies in the mp3 output
shameedsait - Sep 8 2006
Hi all, I low-pass filtered a wav file so that there was no component
above 16 kHz. But the mp3 file file I got after encoding the low-pass
filtered wav file using lame encoder... Mp3-joint stereo [2 Articles]
gbmk_2004 - Jun 30 2005
Hi ,
Can any body helpme in the following .
1. In one Mp3 file, both stereo and joint stereo modes are possible or
not?
i.e. some frames encoded as stereo and some frames a... how to drive pcm samples directly to speaker [2 Articles]
raghurh - Sep 18 2002
Hi all,
I have developed MP3 Audio Decoder on windows NT platform .
Previously i used to put the ouptput of Decoder i.e, PCM samples into
the file and play it through the ... std method to check the quality of song [2 Articles]
raghuram hindupur - Aug 20 2002
Hi all ,Can any one tell me in which site are mp3 test bits i.e 16 bit wav samples with sampling frequency at 44100 Hzare available ???Also are there any Mp3 analyzers availab... How make 3d sound in matlab??
robs...@yahoo.com - Feb 10 2010
Hello all
i trying make 3d sound in matlab (like virtual hair cut), and i think that is depend on amplitude(far,near) and shift(left, right) of orginal signal
i success in p... Hi
ap1234_singh - Mar 8 2002
Hi all
I am working on MP3 decoder for a 16 bit Fixed pt DSP. I am having
trouble in dequantizer implementation please let me know in case
there is any information or impleme... ´ð¸´: RE: Re: MP3 coding --recommended books
zhum...@postel.com.cn - Sep 21 2003
You could down the paper from the URL
" http://www.macman.net/files/mp3/mpegaud.pdf "
Good Luck!
Min
"Nalin Pithwa" ... Frequency inversion
raj raj - Aug 9 2005
Hello everybody,
Iam implementing MP3 decoder.
I would be very happy if any body gives answer for
1. What is frequency inversion
2. Why frequency inversion is done ... Minimad output
Karthika - Dec 15 2006
HI all,
I am trying to decode an mp3 bit stream using the
library libmad. I am using the program "minimad.c".
But, I am not knowing where to look for the output
data i.e the ... Re: ´ð¸´: RE: Re: MP3 coding --recommended books
hemanth kumar - Sep 23 2003
Hi Manju,
We too have gone thru the same pain, trying our luck with all sorts of search engines. this was the best link we found.
http://www.mp3-tech.org/
... MP3 pointers
Syed Moinuddin - Sep 6 2000
Hi all,
There are two sites where you can find info about MP3
offical site:-> www.cselt.it/mpeg/
Lots of Links -> www.m... Time warping of audio signals [3 Articles]
raja...@yahoo.com - Dec 16 2005
Hi,
I'm working on implementing Trick Modes (fast forward, rewind etc) in MP3. In this context, I need to play audio at higher speeds (2x, 4x). Skipping audio samples distorts ... building LibMpeg3
YOSHITA NANDA - Jun 11 2005
Dear All,
I am doing masters project on audio classifcation system. A freely
available package LibMpeg3 was downloaded by me from the web, required
to extract mp3 audio stream... Synthesis Filter in libmad
Karthika - Jan 24 2007
HI all,
I am studying the libmad code for mp3 decoder and I
have a doubt in the file “synth.h”. I could not
understand the “filter” element of the structure
“mad_synth”.
... AC3 bitstreams [2 Articles]
Sameer Kibey - Jun 22 2004
hi all
can anyone tell me from where i can get either
1. AC-3 bitstreams or
2. an AC3 'encoder' or
3. mp3/wav/wma/pcm to "AC3" converter
basically i am in need of an AC3 bitst... Why is this group so silent? [2 Articles]
Krishnakumar G - Sep 6 2000
Hi friends,
Can anyone tell me a way to understand the quantization block found in
the MP3 standard in some detail.Please give me some pointers to some
material you know.
... Re: [Wanted] MPEG-2 Audio Source Code
Sunny Hsieh - May 7 2002
Go to http://www.mp3-tech.org/programmer/decoding.html
There are a lot of source code for your reference.
Sunny
----- Original Message -----
From: "m_0_0_m" MPEG-2 layer-3 multichannel decoder
pai_raviin - Sep 1 2005
Hi,
I am trying to implement the MPEG-2 layer-3 multichannel decoder,
backward compatible with MPEG-1 layer-3.
I am new to this work and I don't have any source code to implem... Re: Audio Quality Measurement or Comparison
Amit - Jun 16 2008
If you are using a perfect reconstruction filterbank , then you can go with=
SNR measurements to determine the quality. If you are using pseudo QMF(lik=
e the once in MP3) you c... filter bank : design n application [2 Articles]
Sanjay S - Feb 2 2005
I'm currently doing my major project on Non-uniform filter bank theory and application. I need your help and suggestions based the design of a non-uniform cosine-modulated filt... Re: Psychoacoustics in MPEG-4 AAC. [4 Articles]
alexander lerch - Jul 14 2003
Hi,
the models used by the ISO code are usually described quite
well in the standard. However, these models are not optimized
to work too good. :-)
Principally, the psychoacou... unpredictability equation in psychoacoustic model 2 [2 Articles]
sandeep hublikar - Jun 13 2002
Hi all,
Can anybody tell me the Theory and derivation behind the
unpredictability equation in psychoacoustic model 2 used in mp3 audio encoder ?
Thanks in ... Portable Recorder Project
David Evennou \Data Masters\ - Nov 29 2005
Hello members,
I need some help with information for a project. I plan to build a portable recorder for recording our Bible Studies. I am sort of new to DSP and could really us... Re:Re: Mixing down from multiple input sources
³ÂÇ¿ - Sep 13 2008
The technology mentioned by you come from AAC or MP3. I think the topic discussed currently by us is multi-meeting of voip.
ÔÚ2008-07-15 13:54:38£¬"Twafik Mohamed" дµÀ£º
... RE: conversion
HARI KRISHNA Vuppaladhadiam - May 28 2003
Hi All,
I have a related question on MP3 Player (Decoder)
In MP3 applications, we see 44.1, 32, 48 and so on sampling frequencies.
How are these implemented practically? Do w...