****MATLAB QUESTION*****

 

I need to complete the attached lab (Lab05-Audio_Filtering). I have attached the necessary .mat and .wav files described in the instructions. I have completed much of this lab, but I seem to have gotten stuck trying to convert the vector to a .wav file. I am also getting a couple of errors and I am not sure why. I have attached the work that I have done so far (lab5.m). Correct my .m file to show how this code should be written. Thank you.%% Lab 5

%% Clear command, variables
clear,clc,close all;
format short g

%% Load audio files

load filter_coeffs.mat;
[z,fs] = audioread('rdd.wav');

%% Create user inputs and if statements
channel_str = input('\n Choose which channel you would like to filter (1 for left, 2 for right)','s');
band_str = input('\n Choose which of 3 bands you would like in your filtered wav file','s');
include_str1 = input('\n Including band 1','s');
include_str2 = input('\n Including band 3','s');
%save_filter_str = input('\n Would you like to save your filtered results to a file (y/n)?','s');
%file_name_str = input('\n Enter the file name (do not include the .wav extension):','s')
% If left channel is chosen


if strcmp(channel_str,'1');
    
     left_chan = z(:,1);
end
    
% If right channel is chosen

if strcmp(channel_str,'2');
     right_chan = z(:,2);
end  

%% Use filter to separate bands

desired_chan1 = left_chan
desired_chan2 = right_chan

% If band 1 is chosen

band1left = filter(lpf(2,:),lpf(1,:),desired_chan1);
band1right = filter(lpf(1,:),lpf(2,:),desired_chan2);

% If band 2 is chosen

band2left = filter(bpf(2,:),bpf(1,:),desired_chan1);
band2right = filter(bpf(1,:),bpf(2,:),desired_chan2);

% If band 3 is chosen

band3left = filter(hpf(2,:),hpf(1,:),desired_chan1);
band3right = filter(hpf(1,:),hpf(2,:),desired_chan2);

filtered = [band1left band1right band2left band2right band3left band3right];

%%%% Lab 5

%% Clear command, variables
clear,clc,close all;
format short g

%% Load audio files

load filter_coeffs.mat;
[z,fs] = audioread('rdd.wav');

%% Create user inputs and if statements
channel_str = input('\n Choose which channel you would like to filter (1 for left, 2 for right)','s');
band_str = input('\n Choose which of 3 bands you would like in your filtered wav file','s');
include_str1 = input('\n Including band 1','s');
include_str2 = input('\n Including band 3','s');
%save_filter_str = input('\n Would you like to save your filtered results to a file (y/n)?','s');
%file_name_str = input('\n Enter the file name (do not include the .wav extension):','s')
% If left channel is chosen


if strcmp(channel_str,'1');
   
     left_chan = z(:,1);
end
   
% If right channel is chosen

if strcmp(channel_str,'2');
     right_chan = z(:,2);
end 

%% Use filter to separate bands

desired_chan1 = left_chan
desired_chan2 = right_chan

% If band 1 is chosen

band1left = filter(lpf(2,:),lpf(1,:),desired_chan1);
band1right = filter(lpf(1,:),lpf(2,:),desired_chan2);

% If band 2 is chosen

band2left = filter(bpf(2,:),bpf(1,:),desired_chan1);
band2right = filter(bpf(1,:),bpf(2,:),desired_chan2);

% If band 3 is chosen

band3left = filter(hpf(2,:),hpf(1,:),desired_chan1);
band3right = filter(hpf(1,:),hpf(2,:),desired_chan2);

filtered = [band1left band1right band2left band2right band3left band3right];

%%

Attachments:

• 1512997110-ENGR114-Lab05-Audio_Filtering_v2.0.pdf