Question

PLEASE FAST. WRITE IN C LANGUAGE I WILL RATE YOU UP!!

In this quiz, you will work as an audio engineer to process sampled audio signals. Remember, a signal is a function of time, so we start by sampling the time axis (similar to sampling the x-axis). A common audio operation is to mix two signals together, which simply means add them together and scale them too). out = a.in, +b.in Here, in, and in, are the two input signals, a and b are amplitude scaling factors, and out is the resulting (mixed) output signal. Another common audio operation is called clipping, which means always keeping the audio level less than some maximum value: if out in SmaxVal maxVal if in > maxVal An illustration of these two operations is shown on the following pages. In this quiz, we will created two sampled sine signals, mix them, then clip the mixed signal. Write a C program that does the following. (a) Start with comment statements at the top (before your includes) with the following info: Name, Date, Quiz #6 (b) Write the following functions: int getTimeSamples (float tmin, float tmax, float step, float t[]) The job of this function is to fill in the t[] array with the samples and also retum n, the total number of samples. void getSineSamples (int n, float t[), float y(, float fo) The job of this function is to compute samples of the function: y = sin(22/1) void mix(int n, float a, float ini(), float b, float in2(), float out (1) The job of this function is to compute the mixed signal (see equation above). void clip(int n, float in[), float out[), float maxval) The job of this function is to compute the clipped signal (see equation above). void printArray (int n, float x[], char label()) Hint: For alignment, use $ -3.2f in your printf. Also, when calling the function, pad the passed-in label with spaces when necessary; for example" y1" (c) Write a main function which does the following: Sample the time axis between 0 and 1 with a step of 0.1 • Create samples of two sine waves: one with frequency fo = 1.0 and the other with fo = 2.0 • Mix the two signals with equal weighting: a = b = 1.0 Clip the mixed signal with maxVal = 1.0 • Print the results to the screen in the format shown below. Do all printing at the end of main. (d) Copy your output and paste after main (as a comment statement). t: 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 yi: 0.81 0.31 y2: ymix: yClip: 1.00 1.00 2.00 1.00 0.81 0.31 -0.31 -0.81 -1.00 -0.81 -0.31 0.31 0.31 -0.01 -0.81 0.31 1.00 0.31 -0.81 -0.81 1.12 -0.50 -1.12 -0.50 0.00 -0.50 -1.12 -0.50 1.00 -0.50 -1.12 -0.50 0.00 -0.50 -1.12 -0.50 1.00 1.00 2.00 1.00 1.12 1.00

Answer 1

I have implemented the Signal sampling program , per the given description.

NOTE :PLEASE NOTE THE GIVE OUTPUT IS FOR COSINE VALUE [YOU CAN CHECK cos(0) is '1' ] SO I HAVA

PROVIDED BOTH sin and CoSine output.

Please find the following Code Screenshot, Output, and Code.

ANY CLARIFICATIONS REQUIRED LEAVE A COMMENT

1.CODE SCREENSHOT :

: : Sin Signal Mix.cx 1 /* 2. Name 3 Date 4. Quiz6 : 5 L*/ 6 #include<stdio.h> 7 #include <math.h> //to create sample of size 'step' and return the number of samples created 9 şint getTime Samples (float tmin, float tmax,float step, float t[]) { 10 int i; 11 float i; 12 for(j=0,i=tmin;i<=tmax+step;j++,i=i+step) 13 t[j]=i; 14 return j; 15 16 //to get the sine samples 17 şvoid getsineSamples (int n, float t[],float y[],float f0) { 18 //calculate the sin(2*pi*fo*t) for each value of t 19 for(int i=0;i<n;i++) 20 y[i]=sin(2.0* (22.0/7.0) *10*t[i]); 21 L} 22 //to get the Cosine samples 23 şvoid getcosinSamples (int n,float t[],float y[],float f() { 24 //calculate the cos (2*pi*f0*t) for each value of t 25 for (int i=0;i<n;i++) 26 y[i]=cos (2.0* (22.0/7.0)*f0*t[i]); 27 L}

الية لارا لیا Sin Signal Mix.c x 28 //to mix the two signals 29 şvoid mix(int n, float a, float in1[], float b,float in2[],float out[]) { 30 for(int i=0;i<n;i++) 31 out[i]=a*inl[i]+b*in2[i]; 32 - } 33 //the clip function to assign maxval or in 34 şvoid clip(int n,float in[],float out[],float maxval) { 35 for(int i=0;i<n;i++) { 36 if(in[i]<maxVal) 37 out[i]=in[i]; 38 else 39 out[i]=maxval; 40 } 41 } 42 //print the array 43 şvoid printArray (int n,float x[],char label[]) { 44 int i; 45 printf("\n%-65: ", label); 46 for(i=0;i<n;i++) 47 printf("\t%3.2f",x[i]); 48 -} 49 pint main() { 50 //variable 51 //tmin for starting time 52 float tmin=0; 53 //tmax for ending time, maxval repsents maxval in clip function 54 float tmax=1.0,maxVal=l; //+ha increment of ston in mlaine

Sin Signal Mix.cx 53 54 55 56 57 58 59 60 61 62 63 64 65 66 \n"); //tmax for ending time, maxVal repsents maxval in clip function float tmax=1.0,maxVal=l; //the increment of step in sampleing float step=0.1; //arrays to store time ,samplel, sample2,mix, out float t[100],y1[100],y2[100],ymix[100], out[100];; int n, a=1,b=l; printf(" -The Sine Sample data //Sample the time axis between 0 and 1 with step size of 0.1 n=getTime Samples (tmin, tmax, step, t); printArray (n,t,"t"); //create samples of two sin waves getsineSamples (n,t,y1,1.0); printArray (n, yl, "yl"); getsineSamples (n,t,y2,2.0); printArray (n, y2,"42"); //mix the two signals with equals weight a=b=1 mix(n, a, yl,b,y2, ymix); printArray (n, ymix, "ymix"); //clip the signal clip in, ymix,out,maxval); printArray (n,out, "yclip"); printf("\n\n- -The Cosine Sample data- //Sample the time axis between 0 and 1 with step size of 0.1 n=getTime Samples (tmin, tmax, step,t); printArray(n,t,"t"); //create samples of two cosine waves 68 69 70 71 72 73 74 75 76 77 78 79 \n");

78 79 80 81 82 83 84 85 86 87 88 89 90 91 printArray (n,t,"t"); //create samples of two Cosine waves getcosinSamples (n,t,y1,1.0); printArray (n,y1,"yl"); getcosinSamples (n,t,y2,2.0); printArray (n,y2,"y2"); //mix the two signals with equals weight a=b=1 mix (n, a, yl,b,y2, ymix); printArray (n, ymix, "ymix"); //clip the signal clip (n,ymix, out,maxVal); printArray (n,out, "yclip"); 8 8 - }

2.OUTPUT :

C. C:\WINDOWS\system32\cmd.exe D:\csrc>gcc SinSignalMix.c P:\csrca -The Sine Sample data- it y1 y2 ymix yclip 0.00 0.00 0.00 0.00 0.00 0.10 0.59 0.95 1.54 1.00 0.20 0.95 0.59 1.54 1.00 0.30 0.95 -0.59 0.36 0.36 0.40 0.59 -0.95 -0.36 -0.36 0.50 -0.00 0.00 0.00 0.00 0.60 -0.59 0.95 0.36 0.36 0.70 -0.95 0.58 -0.37 -0.37 0.80 -0.95 -0.59 -1.54 -1.54 0.90 -0.59 -0.95 -1.54 -1.54 1.00 0.00 0.01 0.01 0.01 -The Cosine Sample data- t yi y2 ymix yclip: D:\csrc> 0.00 1.00 1.00 2.00 1.00 0.10 0.81 0.31 1.12 1.00 0.20 0.31 -0.81 -0.50 -0.50 0.30 -0.31 -0.81 -1.12 -1.12 0.40 -0.81 0.31 -0.50 -0.50 0.50 -1.00 1.00 -0.00 -0.00 0.60 -0.81 0.31 -0.50 -0.50 0.70 -0.31 -0.81 -1.12 -1.12 0.80 0.31 -0.81 -0.50 -0.50 0.90 0.81 0.31 1.12 1.00 1.00 1.00 1.00 2.00 1.00

3.CODE :

/*
Name  :
Date  :
Quiz6 :
*/
#include<stdio.h>
#include <math.h>
//to create sample of size 'step' and return the number of samples created
int getTimeSamples(float tmin,float tmax,float step,float t[]){
        int j;
        float i;
        for(j=0,i=tmin;i<=tmax+step;j++,i=i+step)
                t[j]=i;
        return j;
}
//to get the sine samples
void getSineSamples(int n,float t[],float y[],float f0){
        //calculate the sin(2*pi*f0*t) for each value of t
        for(int i=0;i<n;i++)
                y[i]=sin(2.0*(22.0/7.0)*f0*t[i]);
}
//to get the CoSine samples
void getCosinSamples(int n,float t[],float y[],float f0){
        //calculate the cos(2*pi*f0*t) for each value of t
        for(int i=0;i<n;i++)
                y[i]=cos(2.0*(22.0/7.0)*f0*t[i]);
}
//to mix the two signals
void mix(int n,float a,float in1[],float b,float in2[],float out[]){
        for(int i=0;i<n;i++)
                out[i]=a*in1[i]+b*in2[i];
}
//the clip function to assign maxVal or in
void clip(int n,float in[],float out[],float maxVal){
        for(int i=0;i<n;i++){
                if(in[i]<maxVal)
                        out[i]=in[i];
                else
                        out[i]=maxVal;
        }
}
//print the array
void printArray(int n,float x[],char label[]){
        int i;
        printf("\n%-6s:  ",label);
        for(i=0;i<n;i++)
                printf("\t%3.2f",x[i]);
}
int main(){
        //variable
        //tmin for starting time
        float tmin=0;
        //tmax for ending time,maxVal repsents maxVal in Clip function
        float tmax=1.0,maxVal=1;
        //the increment of step in sampleing
        float step=0.1;
        //arrays to store time ,sample1,sample2,mix,out
        float t[100],y1[100],y2[100],ymix[100],out[100];;
        int n,a=1,b=1;
        printf("------------------------------------The Sine Sample data------------------------------------\n");
        //Sample the time axis between 0 and 1 with step size of 0.1
        n=getTimeSamples(tmin,tmax,step,t);
        printArray(n,t,"t");
        //create samples of two sin waves
        getSineSamples(n,t,y1,1.0);
        printArray(n,y1,"y1");
        getSineSamples(n,t,y2,2.0);
        printArray(n,y2,"y2");
        //mix the two signals with equals weight a=b=1
        mix(n,a,y1,b,y2,ymix);
        printArray(n,ymix,"ymix");
        //clip the signal
        clip(n,ymix,out,maxVal);
        printArray(n,out,"yClip");
        printf("\n\n------------------------------------The CoSine Sample data------------------------------------\n");
        //Sample the time axis between 0 and 1 with step size of 0.1
        n=getTimeSamples(tmin,tmax,step,t);
        printArray(n,t,"t");
        //create samples of two CoSine waves
        getCosinSamples(n,t,y1,1.0);
        printArray(n,y1,"y1");
        getCosinSamples(n,t,y2,2.0);
        printArray(n,y2,"y2");
        //mix the two signals with equals weight a=b=1
        mix(n,a,y1,b,y2,ymix);
        printArray(n,ymix,"ymix");
        //clip the signal
        clip(n,ymix,out,maxVal);
        printArray(n,out,"yClip");
}

/*
OUTPUT:
D:\csrc>gcc SinSignalMix.c

D:\csrc>a
------------------------------------The Sine Sample data------------------------------------

t     :         0.00    0.10    0.20    0.30    0.40    0.50    0.60    0.70    0.80    0.90    1.00
y1    :         0.00    0.59    0.95    0.95    0.59    -0.00   -0.59   -0.95   -0.95   -0.59   0.00
y2    :         0.00    0.95    0.59    -0.59   -0.95   0.00    0.95    0.58    -0.59   -0.95   0.01
ymix  :         0.00    1.54    1.54    0.36    -0.36   0.00    0.36    -0.37   -1.54   -1.54   0.01
yClip :         0.00    1.00    1.00    0.36    -0.36   0.00    0.36    -0.37   -1.54   -1.54   0.01

------------------------------------The CoSine Sample data------------------------------------

t     :         0.00    0.10    0.20    0.30    0.40    0.50    0.60    0.70    0.80    0.90    1.00
y1    :         1.00    0.81    0.31    -0.31   -0.81   -1.00   -0.81   -0.31   0.31    0.81    1.00
y2    :         1.00    0.31    -0.81   -0.81   0.31    1.00    0.31    -0.81   -0.81   0.31    1.00
ymix  :         2.00    1.12    -0.50   -1.12   -0.50   -0.00   -0.50   -1.12   -0.50   1.12    2.00
yClip :         1.00    1.00    -0.50   -1.12   -0.50   -0.00   -0.50   -1.12   -0.50   1.00    1.00
D:\csrc>

*/

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