?? sintabr.q15
字號:
;***********************************************************
; Version 2.20.01
;***********************************************************
;*****************************************************************************
; Filename: sintabqr.q15
; Description: twiddle table to include for RFFT
;
; Copyright Texas instruments Inc, 1998
;-----------------------------------------------------------------------------
; Description: a separate sine table is provided for each stage to increase
; FFT speed. This is at the expense of an increased Data Memory
; size.
; Format: a 1/4-cycle sine values followed by a 1/2-cycle cosine
; values for a total of (3/4 * FFTSIZE -1) values
;-----------------------------------------------------------------------------
; Revision History:
;
; 0.00 M. Christ/M. Chishtie. Original code
; 1.00Beta R. Piedra. 8/31/98, Modified to adapt to real FFT requiremnts
;
;*****************************************************************************
.sect ".sintab"
.label _tablesine
TWIDSTRT
.if ((N>8) | (NREAL=16))
; STAGE 4
sin4 .word 030fch ; 22.500
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