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Description: layer 3 encoder
Platform: |
Size: 283000 |
Author: 李进 |
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Description: c code for mp3, every detail information includ. From ITU
Platform: |
Size: 559246 |
Author: 杨杭洲 |
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Description: C8051F350单片机的24位AD程序，通过示波器显示字符，使用sin3c滤波器输出，看门狗时间改到相应最短，采样频率下位24hz上位8hz。
Platform: |
Size: 139520 |
Author: zxx |
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Description: layer 3 encoder
Platform: |
Size: 282624 |
Author: 李进 |
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Description: c code for mp3, every detail information includ. From ITU
Platform: |
Size: 559104 |
Author: 杨杭洲 |
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Description: C8051F350单片机的24位AD程序，通过示波器显示字符，使用sin3c滤波器输出，看门狗时间改到相应最短，采样频率下位24hz上位8hz。-C8051F350 MCU 24 AD procedures, through the oscilloscope display characters, the use of sin3c filter output, watchdog time change to the appropriate minimum, the sampling frequency 24Hz lower epistasis 8hz.
Platform: |
Size: 139264 |
Author: zxx |
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Description: LAME是一个开源的MP3（MPEG-1音频第三层）音频压缩软件。LAME是一个递归缩写，来自LAME Ain t an MP3 Encoder（LAME不是MP3编码器）。它自1998年以来由一个开源社区开发，现已成为一个在许多方面都达到最高质量的MP3编码器。-LAME development started around mid-1998. Mike Cheng started it as a patch against the 8hz-MP3 encoder sources. After some quality concerns raised by others, he decided to start from scratch based on the dist10 sources. His goal was only to speed up the dist10 sources, and leave its quality untouched. That branch (a patch against the reference sources) became Lame 2.0, and only on Lame 3.81 did we replaced of all dist10 code, making LAME no more only a patch.
Platform: |
Size: 1284096 |
Author: Johnson |
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Description: 基于8Khz采样率的mp3源码,其中包括DCT变换，心理学模型，霍夫曼可边长度编码等-mp3 C source code based 8khz sample rate.
Platform: |
Size: 284672 |
Author: shizhu chen |
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Description: source code for mpeg1 layer3
Platform: |
Size: 118784 |
Author: arun |
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Description: module song(clk,key,song_out,led)
input [7:0] key
input clk
output song_out
output [7:0] led
reg song_reg
reg [21:0] count
reg [19:0] delay
reg [7:0] key_reg
always @(posedge clk)
begin
count=count+1
if((count==delay)&(!(delay==20 d65535)))
begin
count=22 d0
song_reg=!song_reg
end
end
always @(key)
begin
key_reg=key
case(key_reg)
8 b0000_0001: delay=20 d47774 //zhong yin 1 523.3HZ
8 b0000_0010: delay=20 d42568 //zhong yin 2 587.3HZ
8 b0000_0100: delay=20 d37919 //zhong yin 3 659.3HZ
8 b0000_1000: delay=20 d35791 //zhong yin 4 698.5HZ
8 b0001_0000: delay=20 d31888 //zhong yin 5 784HZ
8 b0010_0000: delay=20 d28409 //zhong yin 6 880HZ
8 b0100_0000: delay=20 d25309 //zhong yin 7 987.8HZ
8 b1000_0000: delay=20 d23889 //gao yin 1 1046.5HZ
default: delay=20 d65535
endcase
end
assign song_out=song_reg
文件: song.rar
大小: 357KB
下载: 下载
assign led=key_reg
endmodule
-module song (clk, key, song_out, led) input [7:0] key input clk output song_out output [7:0] led reg song_reg reg [21:0] count reg [19:0 ] delay reg [7:0] key_reg always @ (posedge clk) begin count = count+1 if ((count == delay )& (!( delay == 20' d65535))) begin count = 22 ' d0 song_reg =! song_reg end end always @ (key) begin key_reg = key case (key_reg) 8' b0000_0001: delay = 20' d47774 // zhong yin 1 523.3HZ 8' b0000_0010: delay = 20' d42568 // zhong yin 2 587.3HZ 8' b0000_0100: delay = 20' d37919 // zhong yin 3 659.3HZ 8' b0000_1000: delay = 20' d35791 // zhong yin 4 698.5HZ 8' b0001_0000: delay = 20' d31888 // zhong yin 5 784HZ 8' b0010_0000: delay = 20' d28409 // zhong yin 6 880HZ 8' b0100_0000: delay = 20' d25309 // zhong yin 7 987.8HZ 8' b1000_0000: delay = 20' d23889 // gao yin 1 1046.5HZ default: delay = 20' d65535 endcase end assign song_out = song_reg file: song.rar Size: 357KB Download: Download
Platform: |
Size: 365568 |
Author: 罗仲景 |
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Description: 有效位为四位十进制数的数字频率计，实验板上有一个标准时钟发生电路，为计数闸门控制电路提供一个标准8Hz信号，计数闸门控制电路控制4位十进制计数器从第三秒开始计数一秒钟，计数的个数就是待测输入信号的频率。第四秒停止计数，其中前7/8秒保持计数值，后1/8秒计数器复位。然后再计数一秒，保持计数值一秒，如此循环。-Digital frequency meter
Platform: |
Size: 1024 |
Author: 南瓜 |
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Description: This a wince recorder source code-WinCE recorder
Platform: |
Size: 285696 |
Author: maax |
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Description: 倾角传感器采用VTI Technologies 公司的SCA100T系列。SCA100T是采用微电子机电技术（EMES）制造的一款双轴加速度传感器，SCA100T单轴的最大输出范围约为±40度，有效输出范围为±30度。在采样频率为8Hz及以下时，可获得0.002度的输出分辨率。-VTI Technologies angle sensor uses the company' s SCA100T series. SCA100T is the use of micro electromechanical technology (EMES) made a two-axis accelerometer, SCA100T axis of the maximum output range of about ± 40 degrees, the effective output range is ± 30 degrees. In the sampling frequency is 8Hz and below, the available output resolution of 0.002 degrees.
Platform: |
Size: 225280 |
Author: 李伟 |
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Description: 8hz频率带动1秒，同步频率计，有用的通信工程系课本一样。-8hz 1 second driving frequency, synchronous frequency, as a useful communication engineering textbooks.
Platform: |
Size: 122880 |
Author: ru |
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Description: 8hz频率带动1秒，异步频率计，有用的通信工程系课本一样。
-8hz frequency drive 1 second, asynchronous frequency, as a useful communication engineering textbooks.
Platform: |
Size: 115712 |
Author: ru |
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Description: MyTri产生一个幅值为 1，频率为8Hz 的三角波信号；-MyTri produce a amplitude is 1, frequency of the triangle is 8 Hz wave signal
Platform: |
Size: 1024 |
Author: 江山 |
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Description: 用PIC16F877A单片机的一组8个I/O端口连接LED发光二极管，让它们以跑马灯方式轮流闪烁发光。具体要求是：每个时刻只有一个LED被点亮，亮灯的位置以循环方式不停地移动，顺序为LED0→LED1→LED2→……LED7→全灭→LED0→LED1→……,每个LED被点亮的时间约为0.7s内，它将以8Hz左右的频率闪烁，即所谓“闪烁式跑马灯”。-PIC16F877A MCU, a group of eight I/O ports to connect the LED light-emitting diode, and let them take turns Marquee Flashing. Specific requirements are: every moment there is only one LED is lit, the position lights constantly on the move in a circular manner, the order of LED2 LED0 → LED1 → → ...... LED7 for → LED0 Quanmie → → LED1 → ... each time of about 0.7s LED is lit, it will be about 8Hz frequency flicker, namely the so-called " flashing marquees.
Platform: |
Size: 93184 |
Author: 李宁 |
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Description: LPC800 Mini Kit 测试程序(UART收发，GPIO控制检测，MRT定时器)
测试平台: LPC800 Mini Kit 开发板
使用方法：使用串口调试程序(波特率115200、8个数据位、1个停止位、无奇偶校验位)，用ASCII方式发送数字0 - 9，蓝色Led则相应的以1Hz、1/2Hz、1/4Hz、1/8Hz、1/16Hz、1/32Hz、1/64Hz、1/128Hz、1/256Hz、1/512Hz的频率闪烁，发送其它字符则切换LED的亮灭。-LPC800 Mini Kit Test Program(UART,GPIO,MRT Timer)
Platform: |
Size: 29696 |
Author: XinChao |
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Description: 300HZ 采样率下，50、60HZ陷波器及8HZ高通多项式实现。画出原始数据及滤波后数据并画出相应频谱-50/60HZ notch filter of the matlab program.Plot raw data and filtered data and corresponding Spectrum
Platform: |
Size: 2048 |
Author: mswei |
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Description: 基于VHDL设计四个频率不同的呼吸灯，呼吸频率分别为 0.1Hz,0.2Hz，0.4Hz，0.8Hz
呼吸灯原理：利用PWM波控制led的亮度，的 原始代码 quartus软件亲测可用。-VHDL-based design in four different frequencies breathing light, breathing frequency was 0.1Hz, 0.2Hz, 0.4Hz, 0.8Hz breathing light principle: the use PWM to control the brightness led the wave, the source code is available quartus software pro-test.
Platform: |
Size: 1024 |
Author: 司维 |
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