QUOTE(priya @ Jul 29 2006, 12:10 AM)

We are reading, Sani and it is very interesting. I always thot I was making batter files with CBR bec constant sounded so reliable!!!
That comes of reading science thro litt glasses.

But Ur vbr will finish my bw in a few days!!!!

Can someone also tell me why transparent audio--why is it transparent btw--160 and above sounds better on the music system but often hissy on the comp? Is it that an old comp just has an inferior sound card?
More details about Mp3:What is MP3MP3 stands for MPEG Audio Layer III and it is a standard for audio compression that makes any music file smaller with little or no loss of sound quality. MP3 is part of MPEG, an acronym for
Motion Pictures Expert Group, a family of standards for displaying video and audio using lossy compression. Standards set by the
Industry Standards Organization or ISO, beginning in 1992 with the MPEG-1 standard. MPEG-1 is a video compression standard with low bandwidth. The high bandwidth audio and video compression standard of MPEG-2 followed and was good enough to use with DVD technology. MPEG Layer III or MP3 involves only audio compression.
Click to view attachmentDevelopment of MP3 started back in 1987 in Germany at the
Fraunhofer Institut Integrierte Schaltungen and its given name was the
EUREKA project EU147, Digital Audio Broadcasting (DAB). With the involvement of Professor Dieter Seitzer of the University of Erlangen an algorithm was developed and eventually became known as the ISO-MPEG Audio Layer-3 standard.
- History of MP3
* 1987 - The Fraunhofer Institut in Germany began research code-named EUREKA project EU147, Digital Audio Broadcasting (DAB).
* January 1988 - Moving Picture Experts Group or MPEG was established as a subcommittee of the International Standards Organization/International Electrotechnical Commission or ISO/IEC.
* April 1989 - Fraunhofer received a German patent for MP3.
* 1992 - Fraunhofer's and Dieter Seitzer’s audio coding algorithm was integrated into MPEG-1.
* 1993 - MPEG-1 standard published.
* 1994 - MPEG-2 developed and published a year later.
* November 26, 1996 - United States patent issued for MP3.
* September 1998 - Fraunhofer started to enforce their patent rights. All developers of MP3 encoders or rippers and decoders/players now have to pay a licensing fee to Fraunhofer.
* February 1999 - A record company called SubPop is the first to distribute music tracks in the MP3 format.
* 1999 - Portable MP3 players appear.
What Can MP3 DoFraunhofer Gesellschaft has this to say about MP3:"Without Data reduction, digital audio signals typically consist of 16 bit samples recorded at a sampling rate more than twice the actual audio bandwidth (e.g. 44.1 kHz for Compact Discs). So you end up with more than 1.400 Mbit to represent just one second of stereo music in CD quality. By using MPEG audio coding, you may shrink down the original sound data from a CD by a factor of 12, without losing sound quality."
You will get the best results while creating Mp3 Files at the mode of VBR between 148 and 320 Kbts.
It depends also of the file type. When you have a sample where you don't have anny high instuments you will get the same result as you convert as lower bitrate. I use mostly the best codecs and update them oftenly to achhieve only the best Qality. When I am converting files I do it more then once and differant programm's but when you are using the Licenced Fraunhofer Institut SW it is asured that you will get the best result every time you use it. Afterall they have develloped and invented this file system and they always keep qality controles every now and then and if there are changes the SW companies comes with there updates.
To answer you Qestion Priya,
Can someone also tell me why transparent audio--why is it transparent btw--160 and above sounds better on the music system but often hissy on the comp? >> This has to do with how sound reacts in a close room + Small Speakers AND how it reacts in a open room with large speakers. Music is not more then Sound vibrations what goes from A to B and in a close room it gets more faster and has more feedback then in a more open room. You also will notice when you are playing the same song on THE ORIGINAL Audio CD Format and a Best Qality Mp3 Format.
Play those on the stereo + PC Speakers. Compressed audio is more undetailed and ia more agressive for you ears. Therefore the most important of your PC and Stereo sytem is you SPEAKER SET, A good Speakers Set can create wonders for you ears and so we can listen to our favourite music with more joy and pleasure.
Is it that an old comp just has an inferior sound card?No older Comp had mostly 16 Bit's Chipsets and were somway the half of what we now have
The Industry makes now 32Bits 96 Khz Sound cards so we can enjoy in Quadtruplicate form of our sounds.
And Ideal to this is to use best Qality Speakers set on your these sound cards.
So give attention to the files what you'r creating !!
So I hope I gave not too much tutorial.
Sound Eng. & Comp. Eng
MUKESHFAN