mp3 codec

question.. will the 8-bit dac produce good quality sound ?

hi all , i asked many questions last 2 days about making audio or wav player and im still in the analysis phase.i have now one clear question will determine the technique to use in generating sound from microcontroller (dac or pwm) .i got that using ...
Microcontrollers :: 21 Apr 2009 11:30 :: drdigital :: Replies: 7 :: Views: 819

pwm for generating sound ??

hi all,im on my way to make an audio player.my platform is 8051 but i think it will not fit my requirements for ram buffers or integrated required peripherals so i could move to avr. i have no experience about pwm so im asking about somt things ...1-...
Hobby Circuits and Small Projects Problems :: 21 Apr 2009 0:53 :: srikanthsamaga :: Replies: 9 :: Views: 1410

audio video codec arm dsp software

h.263 h.264 mpeg4 mp3 aac g.723.1a g.729ab wideband amr jpeg jpeg2000 noise deduction echo cancelarm arm7 arm9 s3c2410 s3c2440 pxa270 c54 c55 omap dm642encoder decoderhttp://www.quickembed.com...
EDA Jobs, Promotions, Advertising :: 09 Apr 2009 16:13 :: franson :: Replies: 0 :: Views: 333

mp3 on tms320c6711 dsk board

hello !i look for a mp3 decoder on a tmsc6711 dsk board.my project is to send a mp3 file from the host (computer) to the target (c6711 board). this file is put in a buffer and then has to be decoded by a mp3 algorithm.does anyone of you knows:- where...
Digital Signal Processing :: 15 Apr 2008 16:12 :: allko :: Replies: 5 :: Views: 1068

pt8405 mp3 codec

hi all,looking for pt8405 mp3 codec datasheet. does any one have its data sheet. thanks a lot....
Service Manuals, Requests, Repair Tips :: 05 Apr 2008 21:49 :: ebenni :: Replies: 2 :: Views: 324

whats the simplest mp3 codec?...
Digital Signal Processing :: 25 Jan 2008 23:24 :: Drago :: Replies: 11 :: Views: 1462

speech compresion code

hi there im new here i just want to say hi to u all.im working on speech compresion using celp code(code excited linear predictive coding). by matlab,so plz if any one knows about this subject i will be thankful...
Digital Signal Processing :: 14 Jan 2008 5:03 :: ahmedseu :: Replies: 20 :: Views: 2250

best audio format for mobile phone?

hi all, i want to know is there any format better than mp3 for audio files in mobile phones considering the limitation of memory and power in mobile devices.if there is any , please give the details about the format.regardswajahat...
Digital Signal Processing :: 09 Jan 2008 8:10 :: cydi :: Replies: 2 :: Views: 228

setting sampling rates of an adc

hi,how does a designer (manufacturer) calibrate, set, arrange sampling rates of an adc?how does a user change its sampling frequency? added after 1 minutes: i have been using c6713 dsp starter kit. various sampling rates can be choosen. also everybod...
ASIC Design Methodologies & Tools (Digital) :: 15 Jun 2007 7:50 :: RegUser_2 :: Replies: 9 :: Views: 753

mp3 codec

hello.........where i can get plugins mp3 codec for ubuntu fiesta...
Linux Software :: 04 Jun 2007 15:00 :: suriadin01 :: Replies: 0 :: Views: 144

how do mp3 players work

hw do the mp3 players like ipod(itunes) etc.. workdo they have a mp3 decoder chip ???if so is the chip available in market so that we cud develop our own mp3 players ????thanks a lot...
Electronic Elementary Questions :: 17 May 2007 10:02 :: djones :: Replies: 6 :: Views: 414

speech codec info

hey guyzi want etsi papers for gsm speech codecthanx...
Digital communication :: 25 Mar 2007 0:29 :: Yasser A.Nour :: Replies: 4 :: Views: 540

audio broadcasting(

anybody knows how to make use of the udp(user datagram protocol) in c++ language..we are trying to a create a softwafe on a public address system using c++ or aany easier language for impalementaion of the said system..thank you in advance.....some...
PC Programming and Interfacing :: 06 Mar 2007 9:53 :: leoren_tm :: Replies: 18 :: Views: 951

video editting problems !!

hi alli recorded some programs from cable using pixel view capture card.when i try to edit it to extract audio from selected place i get error. i.e. described according to programs used.blaze media prowhen i select the video b/w two times and try to ...
Software Problems, Hints and Reviews :: 12 Feb 2007 5:52 :: matrix1 :: Replies: 0 :: Views: 63

about noise cancellation

hi guys: now i am designing an opamp in continuous time which requires a snr>=90db using the smic .13 process(seems poor process).as the vp_p of the input signal is 1v,to achieve the snr specification,i need to control the equivalent output noi...
Analog IC Design & Layout :: 11 Feb 2007 0:00 :: betty1007 :: Replies: 6 :: Views: 294

wav to mp3 and mp3 to wav

i am looking for free (not demo) wav/mp3 converter.any ideas?bye...
Software Requests :: 02 Feb 2007 1:05 :: IanP :: Replies: 3 :: Views: 138

can you contract audio cdec ip?

i need some audio ips for my project.codec ips : wma9 mp3 mpeg2/mpeg4 audio formatshardwired rtl or dsp software based is ok.rtl codes shoulde include verilog rtl codes, c model source codes.dsp software based: adsp2181 , ti32050, arm9, or mips324ke...
Digital Signal Processing :: 16 Dec 2006 3:15 :: solvall :: Replies: 0 :: Views: 105

how to go for dsp+vlsi field

hi,just wanted to ask whats is the way to go for vlsi+dsp field...should one first learn & gain exp in dsp field(like audio/video) or directly start in vlsi field...
PLD, SPLD, GAL, CPLD, FPGA Design :: 16 Nov 2006 7:02 :: rsrinivas :: Replies: 5 :: Views: 192

does anyone have mp3 codec

the algorith/source code/reference designeither in software or asicthx!...
Digital Signal Processing :: 26 Aug 2006 5:37 :: kamejoko80 :: Replies: 11 :: Views: 1671

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motorola 68hc11

1.guys, could you pinpoint me the data sheet for this module.2. which one is better - 68hc11 @ pics? can you guys give me the advantages & disadvantages.im building a project using either one on designing a device that may store messages. could you g...
Microcontrollers :: 07 Aug 2006 12:54 :: AKoNGz :: Replies: 10 :: Views: 645

source code for audio codec

source code for audio codec,anyone can give me suggestions about audio codec design or phd thesis paper?...
Digital Signal Processing :: 03 Jul 2006 8:25 :: dchandresh :: Replies: 2 :: Views: 384

mp3

i want to implement a codec using mp3 standard.can any one give me a help about the algorithm and this standard?any resourse or site?thanks...
Digital Signal Processing :: 27 Jun 2006 6:25 :: shanmugavel :: Replies: 4 :: Views: 531

ac3 standards

hi,can anybudy please provide me general idea about the ac3 multichannel codec standard. if possible upload the standard or if u have any comments on it or any general paper or any type of documentation please.thanks & regardschandresh...
Digital Signal Processing :: 22 Jun 2006 6:33 :: dchandresh :: Replies: 3 :: Views: 234

mp3 player chips ??

does someone have information related to chips that play mp3 or proyects related to these ...are there some library code for ccs or c18 ?is it posible to play mp3s , with a codec chip drived by a pic , streamed trhough a lan network ??hope tha...
Microcontrollers :: 21 Jun 2006 18:25 :: criss_m :: Replies: 2 :: Views: 531

vs1001k solution!

hello, i am a new member!i have project a small mp3 reader with sd-card, pic16f876 and vs1001k!i have realized succesfully the interface spi (in fact the microcontroller answerscorrectly and sets all the registers properly), the my problem stay in to...
Microcontrollers :: 01 May 2006 13:53 :: Ziko87 :: Replies: 4 :: Views: 375

analog to digital video conversion???

what stuffs do i need for the simplest and the easiest analog to digital video conversion system?can i do that using microcontroller such as lpc2148 what has both adc and dac built in? what is the limitation (if there any)? please upload or send me l...
Microcontrollers :: 21 Apr 2006 20:45 :: Buriedcode :: Replies: 3 :: Views: 297

bus for connecting arm + dsp

i am thinking that for some specified application which arm-base processor and dsp works together.whats the type of bus between two processors, which could enhance the total computation power?are they memory shared (it seems too complicated for s/w d...
Embedded Systems and Real-Time OS :: 22 Feb 2006 15:52 :: deweiwang :: Replies: 7 :: Views: 549

spi interface

need information & code examples using spi bus to drive any dsp/mcu/eeprom.thanks in advance...
Microcontrollers :: 26 Jan 2006 19:26 :: silvio :: Replies: 8 :: Views: 696

standalone, simple mp3 player

which is the simplest mp3 codec i can find? my requirements: system simplicity, reduced component count... just play a song!my idea: i found vlsi solution vs1001 the most suitable mp3 codec for a standalone mp3 player with very simple functionality.w...
Digital Signal Processing :: 23 Jan 2006 23:59 :: pepillo :: Replies: 0 :: Views: 243

mp3 encode for streaming purpose

firstly, i dont know whether this topic should put on the dsp forum or not, pls advise.i have to implement a hardware for converting pcm signal to mp3, only (mp3)encoding is involved, no decoding process.since that almost parts on the markets are int...
Microcontrollers :: 12 Dec 2005 10:14 :: DarwinAlonzo :: Replies: 0 :: Views: 192

dm642 network image-processing development kit

ng.com/images/gao_dm642kit.jpghttp://www.gaoengineering.com/index.php?main_page=product_info&products_id=121applications:network videophonemultimedia algorithm development (mpeg4, h.263, mpeg2, jpeg, mp3)network video cameravideo servermultimedia tea...
Digital Signal Processing :: 14 Nov 2005 23:07 :: david_embedded :: Replies: 0 :: Views: 285

codec

well im doing project on codec. do anyone have basic codec information especially on audio codec. it would be helpful if explaination done hw raw voice signal from mike change into digital form on codec ic.regardsdaneshwarning. eda e-books upload/dow...
Electronic Elementary Questions :: 25 Mar 2005 18:28 :: puviarasu :: Replies: 2 :: Views: 342

what is the develoment of the audio codec?

what is the new development of the audio codec?i mean such as sigma delta adc/dac ,..mp3,aac ....,etc...thanks for answering...
Digital Signal Processing :: 12 Jan 2005 3:30 :: boeysue :: Replies: 7 :: Views: 843

fpga power

hello all,i use spartan3 400k gates fpga for a design, the nsc datasheet said that the iint(internal)_1.2v for this chip is 0.2 to 3(max), but xilinx datasheet said nothing about the internal current.and i found a ref design provided by xilinx use a ...
PLD, SPLD, GAL, CPLD, FPGA Design :: 30 Jul 2004 7:08 :: leonyang :: Replies: 6 :: Views: 744

[fpga] mp3 codec test board???

hello all,id like to design a prototype board for mp3 codec core (in vhdl) testing, it may include fpga, mcu, a/d, d/a, and several periphery like usb. someone suggested me to combine the codec test board so that i can test the codec on one board, bu...
Digital Signal Processing :: 22 Jun 2004 11:41 :: hoangthanhtung :: Replies: 1 :: Views: 460

decoding mp3 with a controller w/out using any dsp just d/a

any one knows a simple doc how to decode mp3 files or how sound files are compress? (mp3 programming for dummies)my plan was to dedicate a processor to decode an mp3 files without using any dsp just d/a.interfacing ide with printer port...
Microcontrollers :: 07 Mar 2004 21:17 :: Make_Pic :: Replies: 8 :: Views: 1308

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