tap of fir filter

I created a coefficent file .flt from dspic lite. In this file that has two
parts. 
From 0.3540039062500000E and below are obviously coefficients, but what
are they from 116 74 /* coefficient of tap 0 */ to 116 74 /* coefficient of
tap 63 */? How can I define them from coeffiecients? 
Here is my .flt file 

FILTER COEFFICIENT FILE 
FIR DESIGN 
SAMPLING FREQUENCY 0.800000E+04 HERTZ 
64 /* number of taps in decimal */ 
40 /* number of taps in hexadecimal */ 
16 /* number of bits in quantized coefficients (dec) */ 
10 /* number of bits in quantized coefficients (hex) */ 
0 /* shift count in decimal */ 
0 0.100000000E+01 /* shift count (hex), gain multiplier */ 
116 74 /* coefficient of tap 0 */ 
143 8F /* coefficient of tap 1 */ 
170 AA /* coefficient of tap 2 */ 
198 C6 /* coefficient of tap 3 */ 
... 
116 74 /* coefficient of tap 63 */ 
0.3540039062500000E-02 3F6D000000000000/* coefficient of tap 0 */ 
0.4364013671875000E-02 3F71E00000000000/* coefficient of tap 1 */ 
0.5187988281250000E-02 3F75400000000000/* coefficient of tap 2 */ 
0.6042480468750000E-02 3F78C00000000000/* coefficient of tap 3 */ 
.. 
0.4364013671875000E-02 3F71E00000000000/* coefficient of tap 62 */ 
0.3540039062500000E-02 3F6D000000000000/* coefficient of tap 63 */ 

On Jun 16, 2:06&#4294967295;pm, "zidean007" <zidean...@yahoo.com> wrote:
> I created a coefficent file .flt from dspic lite. In this file that has two
> parts.
> From 0.3540039062500000E and below are obviously coefficients, but what
> are they from 116 74 /* coefficient of tap 0 */ to 116 74 /* coefficient of
> tap 63 */? How can I define them from coeffiecients?
> Here is my .flt file
>
> FILTER COEFFICIENT FILE
> FIR DESIGN
> SAMPLING FREQUENCY 0.800000E+04 HERTZ
> 64 /* number of taps in decimal */
> 40 /* number of taps in hexadecimal */
> 16 /* number of bits in quantized coefficients (dec) */
> 10 /* number of bits in quantized coefficients (hex) */
> 0 /* shift count in decimal */
> 0 0.100000000E+01 /* shift count (hex), gain multiplier */
> 116 74 /* coefficient of tap 0 */
> 143 8F /* coefficient of tap 1 */
> 170 AA /* coefficient of tap 2 */
> 198 C6 /* coefficient of tap 3 */
> ...
> 116 74 /* coefficient of tap 63 */
> 0.3540039062500000E-02 3F6D000000000000/* coefficient of tap 0 */
> 0.4364013671875000E-02 3F71E00000000000/* coefficient of tap 1 */
> 0.5187988281250000E-02 3F75400000000000/* coefficient of tap 2 */
> 0.6042480468750000E-02 3F78C00000000000/* coefficient of tap 3 */
> ..
> 0.4364013671875000E-02 3F71E00000000000/* coefficient of tap 62 */
> 0.3540039062500000E-02 3F6D000000000000/* coefficient of tap 63 */

Zidean,

For 116 74 /* coefficient of tap 0 */, the 16-bit coefficient for tap
0 is decimal 116, the 74 looks like a hex memory location.

Note that
0.3540039062500000E-02=116/32768
0.4364013671875000E-02=143/32768

The rest is done the same way.

Dirk

On Jun 16, 2:06&#4294967295;pm, "zidean007" <zidean...@yahoo.com> wrote:
> I created a coefficent file .flt from dspic lite. In this file that has two
> parts.
> From 0.3540039062500000E and below are obviously coefficients, but what
> are they from 116 74 /* coefficient of tap 0 */ to 116 74 /* coefficient of
> tap 63 */? How can I define them from coeffiecients?
> Here is my .flt file
>
> FILTER COEFFICIENT FILE
> FIR DESIGN
> SAMPLING FREQUENCY 0.800000E+04 HERTZ
> 64 /* number of taps in decimal */
> 40 /* number of taps in hexadecimal */
> 16 /* number of bits in quantized coefficients (dec) */
> 10 /* number of bits in quantized coefficients (hex) */
> 0 /* shift count in decimal */
> 0 0.100000000E+01 /* shift count (hex), gain multiplier */
> 116 74 /* coefficient of tap 0 */
> 143 8F /* coefficient of tap 1 */
> 170 AA /* coefficient of tap 2 */
> 198 C6 /* coefficient of tap 3 */
> ...
> 116 74 /* coefficient of tap 63 */
> 0.3540039062500000E-02 3F6D000000000000/* coefficient of tap 0 */
> 0.4364013671875000E-02 3F71E00000000000/* coefficient of tap 1 */
> 0.5187988281250000E-02 3F75400000000000/* coefficient of tap 2 */
> 0.6042480468750000E-02 3F78C00000000000/* coefficient of tap 3 */
> ..
> 0.4364013671875000E-02 3F71E00000000000/* coefficient of tap 62 */
> 0.3540039062500000E-02 3F6D000000000000/* coefficient of tap 63 */

Zidean,

For 116 74 /* coefficient of tap 0 */, the 16-bit coefficient for tap
0 is decimal 116, the 74 is 116 in hexadecimal.


Note that
0.3540039062500000E-02=116/32768
0.4364013671875000E-02=143/32768


The rest is done the same way.


Dirk

zidean007 wrote:
> I created a coefficent file .flt from dspic lite. In this file that has two
> parts. 
> From 0.3540039062500000E and below are obviously coefficients, but what
> are they from 116 74 /* coefficient of tap 0 */ to 116 74 /* coefficient of
> tap 63 */? How can I define them from coeffiecients? 
> Here is my .flt file 
> 
> FILTER COEFFICIENT FILE 
> FIR DESIGN 
> SAMPLING FREQUENCY 0.800000E+04 HERTZ 
> 64 /* number of taps in decimal */ 
> 40 /* number of taps in hexadecimal */ 
> 16 /* number of bits in quantized coefficients (dec) */ 
> 10 /* number of bits in quantized coefficients (hex) */ 
> 0 /* shift count in decimal */ 
> 0 0.100000000E+01 /* shift count (hex), gain multiplier */ 
> 116 74 /* coefficient of tap 0 */ 
> 143 8F /* coefficient of tap 1 */ 
> 170 AA /* coefficient of tap 2 */ 
> 198 C6 /* coefficient of tap 3 */ 
> ... 
> 116 74 /* coefficient of tap 63 */ 
> 0.3540039062500000E-02 3F6D000000000000/* coefficient of tap 0 */ 
> 0.4364013671875000E-02 3F71E00000000000/* coefficient of tap 1 */ 
> 0.5187988281250000E-02 3F75400000000000/* coefficient of tap 2 */ 
> 0.6042480468750000E-02 3F78C00000000000/* coefficient of tap 3 */ 
> .. 
> 0.4364013671875000E-02 3F71E00000000000/* coefficient of tap 62 */ 
> 0.3540039062500000E-02 3F6D000000000000/* coefficient of tap 63 */ 
> 
> 
Hi,

The first list is also the coefficients, given in signed 
16-bit hexadecimal.

Regards,
John