Some tips : - avoid use of arctan() by rewriting the CW equation. - Keep exp and mantissa in separate regs in the case of thresholds - "curve fit" to compute SNR directly from Tonality SNR = 10 ^ -(6.0 * Tbb + 29.0 * (1 - Tbb))/10.0
Good luck. Mohammed Chalil -----Original Message----- From: Manjunath D N [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 12:52 PM To: [EMAIL PROTECTED] Subject: [MP3 ENCODER] Fixed pOint Psychoacoustic model Hi, I am trying to convert Lame code to fixed point in order to port it to a fixed point 24 bit dsp as part of my college project.. While the other modules are manageable, the psychoacoustic model is really driving me crazy! The dynamic range is so high that sometimes even the double precision(48 bits) arent enough.. I request all the Lame developers to suggest a solution to this problem..It's been bugging me for almost a month now and nothing has come out.. Is it advisable to simulate floating point ? Thanks , With Regards, Manjunath D.N _______________________________________________ mp3encoder mailing list [EMAIL PROTECTED] http://minnie.tuhs.org/mailman/listinfo/mp3encoder _______________________________________________ mp3encoder mailing list [EMAIL PROTECTED] http://minnie.tuhs.org/mailman/listinfo/mp3encoder
