Texas Instruments TMS320C64X manual Dsplib Function Tables, 2. Adaptive Filtering, 3. Correlation

DSPLIB Function Tables

3.3 DSPLIB Function Tables

Table 3−2. Adaptive Filtering

Functions	Description	Page
long DSP_firlms2(short *h, short *x, short b, int nh)	LMS FIR	4-2

Table 3−3. Correlation

Functions	Description	Page
void DSP_autocor(short *r,short *x, int nx, int nr)	Autocorrelation	4-4
void DSP_autocor_rA8(short *r,short *x, int nx, int nr)	Autocorrelation ( r[] must be	4-4
	double word aligned)

Table 3−4. FFT

Functions Description Page

void DSP_fft16x16(short *w, int nx, short *x, short *y)

Complex out of place, Forward 4-8

FFT mixed radix with digit reversal. Input/Output data in Re/Im order.

void DSP_fft16x16_imre(short *w, int nx, short *x, short *y)

void DSP_fft16x16r(int nx, short *x, short *w, unsigned char *brev, short *y, int radix, int offset, int n_max)

void DSP_fft16x32(short *w, int nx, int *x, int *y)

void DSP_fft32x32(int *w, int nx, int *x, int *y)

void DSP_fft32x32s(int *w, int nx, int *x, int *y)

Complex out of place, Forward	4-11
FFT mixed radix with digit
reversal. Input/Output data in
Im/Re order.
Cache-optimized mixed radix FFT	4-14
with scaling and rounding, digit
reversal, out of place. Input and
output: 16 bits, Twiddle factor: 16
bits.
Extended precision, mixed radix	4-24
FFT, rounding, digit reversal, out
of place. Input and output: 32 bits,
Twiddle factor: 16 bits.
Extended precision, mixed radix	4-26
FFT, rounding, digit reversal, out
of place. Input and output: 32 bits,
Twiddle factor: 32 bits.
Extended precision, mixed radix	4-28
FFT, digit reversal, out of place.,
with scaling and rounding. Input

and output: 32 bits, Twiddle

factor: 32 bits.

3-4