RE: [mp3encoder] Inverting phase in an MP3 file

2004-01-12 Thread CB Maillist
Just adding the channels (even with the phases right) won't necessarily work. If the stylus has been just slightly turned/twisted adding the channels will phase out frequencies matching wave length (or harmonics) of the length of the stylus L/R-track difference. In this case you may be better of

[mp3encoder] 24 Bit Fixed Point Conversion of MDCT routines

2004-01-12 Thread Shiv Garg
Hello All, I want to contribute to the Lame MP3 Encoder Fixed Point conversion process. I have already converted mdct and subband modules in 24 bit fixed point and they are giving extremely good results. I have also checked ODG degradation using EAQUAL tool which is quite satisfactory. Please tell

Re: [mp3encoder] Inverting phase in an MP3 file

2004-01-12 Thread G. Vincent Castellano
Actually, I don't care too much what happens to the tiny fraction of mono recordings in the collection. What I'm concerned with are all the stereo recordings that have the two channels out of phase. Perhaps I should add another query: Is the MP3 format capable of encoding relative phase

Re: [mp3encoder] Lame MP3 Encoder - 3.94version

2004-01-12 Thread Gabriel Bouvigne
Narayanan wrote: I would be highly obliged if any of you can provide me a good documentation/information on the latest LAME MP3 encoder code flow.I have downloaded the version 3.94 and started analyzing the same. Also if anyone can guide me through the initial phase, it would be good. I uploaded

[mp3encoder] LAME API references or examples?

2004-01-12 Thread Deven Phillips
Hello, I'm new to the list and new to the API, so I have a few questions. I have been looking for a good reference on the LAME API, but as yet have been unsuccessful. I have been readin through the frontend code trying to get an idea of how to work the API, but as yet I am having little

Re: [mp3encoder] Inverting phase in an MP3 file

2004-01-12 Thread G. Vincent Castellano
On Mon, 12 Jan 2004, G. Vincent Castellano wrote: If the relative phase of the input signal is immaterial to the encoding process, then there's no problem with my stereo recordings. Hmm, since I've got the tools to show a mis-phased signal by visual inspection, I suppose I could just go do