我老师要我制作一个效果器，自己写代码的。。。

不败拿破仑 发表于 2013-10-24 10:37:34

我老师要我制作一个效果器，自己写代码的。。。

不想说太多原因，因某些原因，我必须做出这个可编程的效果器，可是我目前无从下手，不过我知道GC大神无限，这种问题肯定有爱好者懂的。有人知道该如何做吗？要自己写代码的，不是那种直接焊接电路的效果器~~~求大神帮助

RockBear 发表于 2013-10-24 10:44:46

你那个学校的？请与我联系
你老师很有意思哦，想认识下

某谋眸 发表于 2013-10-24 11:03:12

好奇！这个学校，我很感兴趣啊

来香一记 发表于 2013-10-24 11:12:59

你该发到DIY板块去问问

不败拿破仑 发表于 2013-10-24 11:21:22

回复 2楼 RockBear 的帖子

不是，老师知道我玩这个，所以叫我写个效果器，顺便当做答辩项目做了

爱管闲事的鲨鱼 发表于 2013-10-24 11:27:21

是要干这个么……http://msdn.microsoft.com/zh-cn/subscriptions/downloads/jj712231

疯狂的和弦 发表于 2013-10-24 11:32:57

这个级别的问题，请google，请检索各大图书馆的数据库

Q-jie 发表于 2013-10-24 13:35:20

回复 1楼不败拿破仑的帖子

这个比较难了，一个团队做还差不多，如果你是要做出实物，还得有硬件设计，反正头疼，弄出来的话，差不多可以开公司了。。。

alex5150 发表于 2013-12-12 15:44:06

哈哈我当年就是用做效果器当的毕业设计，我这有些程序代码，回头给你。我qq279237985

alex5150 发表于 2013-12-12 17:57:55

附录
用MATLAB仿真
=wavread(‘wei’)；
SIZ=wavread(‘wei’,’size’);
Time=1:SIZ(1);
Plot(time,Y);%画图波形图
Sound(Y,FS,BITS);%声音输出
n=SIZ(1);
X=Y;
for i=10001:n
Y(i)=X(i)+0.3*X(i-10000);%0.3即为衰减比例，10000即为延时长度
if Y(i)>1
   Y(i)=1;
else
if Y(i)<-1
   Y(i)=-1;
   end
end
end
length(Y)
time=1:SIZ(1);
plot(time,Y);
sound(Y,FS,BITS);%声音输出

=wavread(‘wei’);
SIZ=wavread(‘wei’,’size’);
Time=1:SIZ(1);
Plot(time,Y);%声音输出
n=SIZ(1);
X=Y;
for i=22051:n
Y(i)=Y(i)+0.7*X(i-22050);%0.7即为衰减比例，22050即为延时长度
ifY(i)>1
Y(i)=1;
else
   if Y(i)<-1
Y(i)=-1;
End
End
End
Time=1:SIZ(1);
Plot(time,Y);
Sound(Y,FS,BITS);%声音输出

C语言实现延时效果
#define delay_time    5000
#define BUFFER_SIZE delay_time+1
Int flag=1;
Int input,output;
Int n;
Int write_position=BUFFER_SIZE-1;
Int read_position=0;
Void main ()
{
for (n=0;n<BUFFER_SIZE;n++)
buffer=0;
while(1)
{
Input=*（unsigned int*）0x021;
Output= buffer;
Output+=(input*22932)>>15;
Buffer-=(output*9830)>>15;
*(unsigned int*)0x0023 =output;
/*calculate read position*/
Read_position++;
If (read_position>(BUFFER_SIZE-1))
   Read_position=0;
/*calculate write position*/
Write_position++;
If(write_position>(BUFFER_SIZE-1))
   Write_position=0;
}
}

C语言实现合唱效果
#define BUFFER_SIZE 8000
Intbuffer;
Intwrite_position=BUFFER_SIZE-1;
Intread_position;
Intya1,output;
Inta;

Intdepth=30;
Intdelay=100;
Intrate=12;
Intpace , n;
Intstep=1;
Intfinaldelay;
Intinput;

Void main()
{
Finaldelay=delay;
Pace=16000/(rate*depth);
While (1)
{
Input=*(volatile unsigned int*)0x021;
If (n==pace)
{n=0;
   Finaldelay+=step;}
   Else
   n++;

   if(finaldelay>=(depth+delay))
   step=-1;
   if(finaldelay<=(delay))
   step=1;
read_position=(write_position-finaldelay+BUFFER_SIZE-1)%(BUFFER_SIZE-1);

ya1=buffer;
buffer=input;

output=(ya1*29730)>>15;
output+=input;
if(output<=-32768){output=-32768;}
else
{if (output>=32767){output=32767;}}
*(volatile unsigned int*)0x0023=output;
Write_position++;
If(write_position>=BUFFER_SIZE-1)
{write_position=0;}
}
}

C语言实现混响效果
#define combdelay1 500
#define combdelay2 700
#define combdelay3 1020
#define combdelay4 1400
#define alldelay9    2600
#define alldelay10    1640
Int input ,sum;
Int y1,y2,y3,y4,y9,y10;
Int input;
Int buffer1;
Int buffer2;
Int buffer3;
Int buffer4;
Int buffer9;
Int buffer10;
Int    write_position1=combdelay1-1;
Int    write_position2=combdelay2-1;
Int    write_position3=combdelay3-1;
Int    write_position4=combdelay4-1;

Int    write_position9=alldelay9-1;
Int    write_position10=alldelay10-1;

Int    read_position1=0;
Int    read_position2=0;
Int    read_position3=0;
Int    read_position4=0;

Int    read_position9=0;
Int    read_position10=0;
Void main()
{
While(1)
   {
      Input=*(volatile unsigned int*)0x0021;
      Y1=(buffer*22938)>>15;
      Y1+=(buffer1*9830)>>15;
      Buffer1=input;

      Y2=(buffer2*21299)>>15;
      Y2+=(buffer2*13107)>>15;
      Buffer2=intput;

      Y3=(buffer3*20316)>>15;
      Y2+=(buffer3*24314)>>15;
      Buffer3=intput;

      Y4=(buffer4*19661)>>15;
      Y4+=(buffer4*24019)>>15;
      Buffer4=intput;

      Sum=y1+y2+y3+y4;

      If(sum<=-32768){sum=-32768;}
      Else
            {if(sum>=32767){sum=32767;}}
            Y9=buffer9;
            Y9-=(sum*22938)>>15;
            Buffer9=sum;
            Buffer9+=(y9*22983)>>15;

            Y10=buffer10;
            Y10-=(y9*22983)>>15;
            Buffer10=y9;
            Buffer10+=(y10*22938)>>15;

            If(y9<=-32768) {y9=-32768;}
            Else
            {if(y9>=32767){y9=32767;}}
         *(volatile unsigned int*)0x0023=y10;

         Read_position1++;
         If(read_position1>(combdelay1-1))
         {read_position1=0;}

         Read_position2++;
         If(read_position2>(combdelay2-1))
         {read_position2=0;}

         Read_position3++;
         If(read_position3>(combdelay3-1))
         {read_position3=0;}

   Read_position4++;
         If(read_position4>(combdelay4-1))
         {read_position4=0;}

         Read_position9++;
         If(read_position9>(alldelay9-1))
         {read_position9=0;}

      Read_position10++;
         If(read_position10>(alldelay10-1))
         {read_position10=0;}

         Write_position1++;
         If(write_posotion1>combdelay1-1))
         Write_position1=0;

         Write_position2++;
         If(write_posotion2>combdelay2-1))
         Write_position2=0;

         Write_position3++;
         If(write_posotion3>combdelay3-1))
         Write_position3=0;

         Write_position4++;
         If(write_posotion4>combdelay4-1))
         Write_position4=0;

         Write_position9++;
         If(write_posotion9>alldelay9-1))
         Write_position9=0;

         Write_position10++;
         If(write_posotion10>alldelay10-1))
         Write_position10=0;
   }

ROCK教徒 发表于 2013-12-12 18:33:50

吉他这东西在当下搞软件的玩起来还真是其乐无穷啊

wc09 发表于 2021-11-20 17:02:22

大哥，能咨询你一下不，我qq275513557

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