It is possible, there are a few commercially available encoders available for the dsp's we are looking at, however commercially available encoders and poor students do not usually work well together :). We've looked into ADPCM stuff and run into the same problems, licensing fees, patents, and companies generally unwilling to work out a deal with students for a one time use non-commercial license. We're also trying to keep reproducibility costs at a minumum since our sponser may want to market our design (in which case, he will have to deal with the commercial encoder licenses), so a beefier dsp is also not really viable (there's also power consumption concerns).
One company that does seem willing to help us is SPIRIT, www.spiritcorp.com. They have some vocoder algorithms they developed, but have not gotten back to us on their specifics. Would you be at all familiar with them, or the kind of compression they might offer? (1200, 2400, 4800, and 6000 bps). Quality is not a major concern, the audio just has to be recognizeable, we're looking at something along the lines of telephone or mobile phone quality. Thank You, John On Thu, 18 Jul 2002, alexander lerch wrote: > Hi, > > I doubt that any complex encoding technology like MP3, AAC or > even MP2 will work on that 16bit-fixed point DSP. > Perhaps you will have more luck with ADPCM-like compression > methods, altough I would generally recommend 24-32bit fixed > point processors for high quality. > > > Regards, > Alexander > > > > ---------- Forwarded message ---------- > > Date: Tue, 16 Jul 2002 18:29:14 -0400 (EDT) > > From: John Hatton <[EMAIL PROTECTED]> > > To: [EMAIL PROTECTED] > > Subject: LAME on a DSP? > > > > Hello, I represent a group of poor students looking for an audio > > compression algorithm that will work for real time (or perhaps close to) > > encoding of an audio stream on a texas instruments 54xx series DSP (5416 > > being used for development). Are you aware of LAME being used for any such > > thing? > > > > Also, how would we go about getting LAME to work on a DSP if it hasn't > > been done before? None of us has any previous knowledge of audio > > compression or even the porting of applications from one architecture to > > another. I'm guessing it would be too much for us to do in addition to the > > rest of our project, but we are starting to run thing on options that do > > not involve paying somebody several thousand dollars. > > > > Thank You, > > John Hatton > > > > > -- > dipl. ing. > alexander lerch > > zplane.development > http://www.zplane.de > holsteinische str. 39-42 > D-12161 berlin > fon: +49.30.854 09 15.0 > fax: +49.30.854 09 15.5 > > _______________________________________________ mp3encoder mailing list [EMAIL PROTECTED] http://minnie.tuhs.org/mailman/listinfo/mp3encoder
