.module testh.c .area data(ram, con, rel) 0000 _ais:: 0000 .blkb 4 …
Hz 源代码
赫兹,是国际单位制中频率的单位,它是每秒钟的周期性变动重复次数的计量。[1]
修改gen_dtmf.c的列频1477Hz为1457Hz
6C00(27648)->800Hz->1.25ms x/27648=800/1200 x=18432->4800 ffff-4800=b7ff->100Hz x=2400 ffff-2400=dbff->200Hz
//pwm-4.c的头文件 #define _00 0x00ff #define _10 0x00e6 #define _20 0x00CC #define _30 0x00b3 #define _40 0x0099 #de…
#define _00 0x00ff #define _10 0x00e6 #define _20 0x00CC #define _30 0x00b3 #define _40 0x0099 #define _50 0x007F…
#include "radeon_accelerant.h" #define T_POSITIVE_SYNC (B_POSITIVE_HSYNC | B_POSITIVE_VSYNC) // these are the official VESA mode…
verilog work "div_clk_381hz.v"
SYSCLK i HZ1 o HZ8 o TEST i HZ128 o HZ16 o
320 Sample frequency in Hz 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 …
i=0:1999; %2000点 A=(sin(pi*1000*i'/4000)+sin(pi*1800*i'/4000)+sin(pi*2500*i'/4000))/3; %信号频率1000Hz, 1800Hz, 2500Hz;采样频率8000Hz…