From: nimaje mohan <[EMAIL PROTECTED]> Subject: [mp3encoder] Why adj43[] ? Date: Thu, 26 Jun 2003 01:44:24 -0700 (PDT)
> Hi, > Can anybody tell what is the purpose of adj43[] array > in quantize_xrpow() in LAME MP3 Encoder? I mean why is > this adjustment required? Also I didn't understand, > why adj43[] array is initialised the way it is done. See the comments before "quantize_xrpow()" function. * nonlinear quantization of xr * More accurate formula than the ISO formula. Takes into account * the fact that we are quantizing xr -> ix, but we want ix^4/3 to be * as close as possible to x^4/3. (taking the nearest int would mean * ix is as close as possible to xr, which is different.) That's all. adj43 is initialized to fit the requirement. -- Takehiro TOMINAGA // may the source be with you! _______________________________________________ mp3encoder mailing list [EMAIL PROTECTED] http://minnie.tuhs.org/mailman/listinfo/mp3encoder
