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Instructor's note: just put a space at the beginning of each line of code. That way your text won't be interpreted as wikitext code, and it will display correctly. -pm
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<pre> %Derek Richards
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  %HW 1 ECE 301  
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%Derek Richards  
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  %######                            # 
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  %#    #   ##  ##### #####      ## 
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  %HW 1 ECE 301
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  %#    # # # #    #  #      # # 
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  %______          _    __ &nbsp;%
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  %###### #    # #    #  #        # 
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  %| ___ \        | |   / |&nbsp;%
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  %#      ###### #####    #        # 
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  %| |_/ /__ _ _ __| |_ `| |&nbsp;%
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  %#      #    # #   #    #        #    
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  %| __// _` | '__| __|  | |&nbsp;%
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%#      #    # #    #  #      #####
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  %| | | (_| | | | |_  _| |_%
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  %\_|   \__,_|_|   \__| \___/%
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  b=(112/60); %b is the time of one standard beat
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  b=(112/60);&nbsp;%b is the time of one standard beat
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  half_b=0.5*(112/60);
 
  half_b=0.5*(112/60);
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  delta=0.000025;&nbsp;%arbitray variable small enough to sample well
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  delta=0.000025; %arbitray variable small enough to sample well
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w=@(tempo)0:delta:tempo;&nbsp;%whole note
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h=@(tempo)0:delta:0.5*tempo;&nbsp;%half note
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q=@(tempo)0:delta:0.25*tempo;&nbsp;%quarter note
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dotq=@(tempo)0:delta:1.5*0.25*tempo;&nbsp;%dotted quarter note
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e=@(tempo)0:delta:0.125*tempo;&nbsp;%eigth note
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A4=440;&nbsp;%Frequency of note A4
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w=@(tempo)0:delta:tempo; %whole note
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h=@(tempo)0:delta:0.5*tempo; %half note
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q=@(tempo)0:delta:0.25*tempo; %quarter note
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dotq=@(tempo)0:delta:1.5*0.25*tempo; %dotted quarter note
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e=@(tempo)0:delta:0.125*tempo; %eigth note
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A4=440; %Frequency of note A4
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  %Note funtion takes 2 variables
 
  %Note funtion takes 2 variables
 
  %ntype: type of note (w,h,q,dotq,e)
 
  %ntype: type of note (w,h,q,dotq,e)
 
  %dev_A4: deviation from note A4 positive is up the scale, negative is down
 
  %dev_A4: deviation from note A4 positive is up the scale, negative is down
 
  NOTE = @(ntype,dev_A4) sin(2*pi*2^(dev_A4/12)*A4*ntype);
 
  NOTE = @(ntype,dev_A4) sin(2*pi*2^(dev_A4/12)*A4*ntype);
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  %Smoke on the Water, by Deep Purple
 
  %Smoke on the Water, by Deep Purple
 
  sound(NOTE(q(b),-2),1/delta);
 
  sound(NOTE(q(b),-2),1/delta);
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  sound(NOTE(q(b),1),1/delta);
 
  sound(NOTE(q(b),1),1/delta);
 
  sound(NOTE(e(b),5),1/delta);
 
  sound(NOTE(e(b),5),1/delta);
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sound(NOTE(h(b),4),1/delta);
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sound(NOTE(q(b),-2),1/delta);
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sound(NOTE(q(b),1),1/delta);
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sound(NOTE(dotq(b),4),1/delta);
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sound(NOTE(e(b),1),1/delta);
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sound(NOTE(e(b),1),1/delta);
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sound(NOTE(h(b),-2),1/delta);
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%Silence to create a pause before 2x speed
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sound(NOTE(q(8),68),1/delta);
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%Smoke on the Water, by deep Purple, twice tempo
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sound(NOTE(q(half_b),-2),1/delta);
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sound(NOTE(q(half_b),1),1/delta);
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sound(NOTE(dotq(half_b),4),1/delta);
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sound(NOTE(q(half_b),-2),1/delta);
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sound(NOTE(q(half_b),-2),1/delta);
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sound(NOTE(q(half_b),1),1/delta);
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sound(NOTE(e(half_b),5),1/delta);
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sound(NOTE(h(half_b),4),1/delta);
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sound(NOTE(q(half_b),-2),1/delta);
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sound(NOTE(q(half_b),1),1/delta);
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sound(NOTE(dotq(half_b),4),1/delta);
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sound(NOTE(e(half_b),1),1/delta);
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sound(NOTE(e(half_b),1),1/delta);
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sound(NOTE(h(half_b),-2),1/delta);
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%Silence to create a pause before x(2*t) speed
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sound(NOTE(q(8),68),1/delta);
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%Smoke on the Water, by deep Purple, x(2*t)
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NOTE = @(ntype,dev_A4) sin(2*2*pi*2^(dev_A4/12)*A4*ntype);
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sound(NOTE(q(b),-2),1/delta);
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sound(NOTE(q(b),1),1/delta);
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sound(NOTE(dotq(b),4),1/delta);
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sound(NOTE(q(b),-2),1/delta);
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sound(NOTE(q(b),-2),1/delta);
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sound(NOTE(q(b),1),1/delta);
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sound(NOTE(e(b),5),1/delta);
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sound(NOTE(h(b),4),1/delta);
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sound(NOTE(q(b),-2),1/delta);
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sound(NOTE(q(b),1),1/delta);
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sound(NOTE(dotq(b),4),1/delta);
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sound(NOTE(e(b),1),1/delta);
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sound(NOTE(e(b),1),1/delta);
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sound(NOTE(h(b),-2),1/delta);
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%######                          ##### 
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%#    #  ##  #####  #####    #    #
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%#    #  #  #  #    #  #            #
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%######  #    # #    #  #      ##### 
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%#      ###### #####    #      #     
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%#      #    # #  #    #      #     
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%#      #    # #    #  #      #######
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%lets assume the file Beatles.wav is in the current directory...
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[beatle_song, Fs] = wavread('Beatles.wav');
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sound(beatle_song,Fs);
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beatle_song_rev = flipud(beatle_song);
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sound(beatle_song_rev,Fs);
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wavwrite(beatle_song_rev,Fs,'Ece301_HW1_part2');
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%END CODE
  
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sound(NOTE(h(b),4),1/delta); sound(NOTE(q(b),-2),1/delta); sound(NOTE(q(b),1),1/delta); sound(NOTE(dotq(b),4),1/delta); sound(NOTE(e(b),1),1/delta); sound(NOTE(e(b),1),1/delta); sound(NOTE(h(b),-2),1/delta); %Silence to create a pause before 2x speed sound(NOTE(q(8),68),1/delta); %Smoke on the Water, by deep Purple, twice tempo sound(NOTE(q(half_b),-2),1/delta); sound(NOTE(q(half_b),1),1/delta); sound(NOTE(dotq(half_b),4),1/delta); sound(NOTE(q(half_b),-2),1/delta); sound(NOTE(q(half_b),-2),1/delta); sound(NOTE(q(half_b),1),1/delta); sound(NOTE(e(half_b),5),1/delta); sound(NOTE(h(half_b),4),1/delta); sound(NOTE(q(half_b),-2),1/delta); sound(NOTE(q(half_b),1),1/delta); sound(NOTE(dotq(half_b),4),1/delta); sound(NOTE(e(half_b),1),1/delta); sound(NOTE(e(half_b),1),1/delta); sound(NOTE(h(half_b),-2),1/delta); %Silence to create a pause before x(2*t) speed sound(NOTE(q(8),68),1/delta); %Smoke on the Water, by deep Purple, x(2*t) NOTE = @(ntype,dev_A4) sin(2*2*pi*2^(dev_A4/12)*A4*ntype); sound(NOTE(q(b),-2),1/delta); sound(NOTE(q(b),1),1/delta); sound(NOTE(dotq(b),4),1/delta); sound(NOTE(q(b),-2),1/delta); sound(NOTE(q(b),-2),1/delta); sound(NOTE(q(b),1),1/delta); sound(NOTE(e(b),5),1/delta); sound(NOTE(h(b),4),1/delta); sound(NOTE(q(b),-2),1/delta); sound(NOTE(q(b),1),1/delta); sound(NOTE(dotq(b),4),1/delta); sound(NOTE(e(b),1),1/delta); sound(NOTE(e(b),1),1/delta); sound(NOTE(h(b),-2),1/delta); %______ _ _____&nbsp;% %| ___ \ | | / __ \% %| |_/ /__ _ _ __| |_ `' / /'% %| __// _` | '__| __| / / &nbsp;% %| | | (_| | | | |_ ./ /___% %\_| \__,_|_| \__| \_____/%
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</pre>
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%lets assume the file Beatles.wav is in the current directory... [beatle_song, Fs] = wavread('Beatles.wav'); sound(beatle_song,Fs); beatle_song_rev = flipud(beatle_song); sound(beatle_song_rev,Fs); wavwrite(beatle_song_rev,Fs,'Ece301_HW1_part2'); %END CODE
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Revision as of 17:41, 13 January 2011

 %Derek Richards
 %HW 1 ECE 301 
 %######                            #   
 %#     #   ##   #####  #####      ##   
 %#     #  #  #  #    #   #       # #   
 %######  #    # #    #   #         #   
 %#       ###### #####    #         #   
 %#       #    # #   #    #         #   
 %#       #    # #    #   #       ##### 
 
 b=(112/60); %b is the time of one standard beat
 half_b=0.5*(112/60);
 delta=0.000025; %arbitray variable small enough to sample well

 w=@(tempo)0:delta:tempo; %whole note
 h=@(tempo)0:delta:0.5*tempo; %half note
 q=@(tempo)0:delta:0.25*tempo; %quarter note
 dotq=@(tempo)0:delta:1.5*0.25*tempo; %dotted quarter note
 e=@(tempo)0:delta:0.125*tempo; %eigth note
 A4=440; %Frequency of note A4
 
 %Note funtion takes 2 variables
 %ntype: type of note (w,h,q,dotq,e)
 %dev_A4: deviation from note A4 positive is up the scale, negative is down
 NOTE = @(ntype,dev_A4) sin(2*pi*2^(dev_A4/12)*A4*ntype);
 
 %Smoke on the Water, by Deep Purple
 sound(NOTE(q(b),-2),1/delta);
 sound(NOTE(q(b),1),1/delta);
 sound(NOTE(dotq(b),4),1/delta);
 sound(NOTE(q(b),-2),1/delta);
 sound(NOTE(q(b),-2),1/delta);
 sound(NOTE(q(b),1),1/delta);
 sound(NOTE(e(b),5),1/delta);
 sound(NOTE(h(b),4),1/delta);
 sound(NOTE(q(b),-2),1/delta);
 sound(NOTE(q(b),1),1/delta);
 sound(NOTE(dotq(b),4),1/delta);
 sound(NOTE(e(b),1),1/delta);
 sound(NOTE(e(b),1),1/delta);
 sound(NOTE(h(b),-2),1/delta);
 %Silence to create a pause before 2x speed
 sound(NOTE(q(8),68),1/delta);
 %Smoke on the Water, by deep Purple, twice tempo
 sound(NOTE(q(half_b),-2),1/delta);
 sound(NOTE(q(half_b),1),1/delta);
 sound(NOTE(dotq(half_b),4),1/delta);
 sound(NOTE(q(half_b),-2),1/delta);
 sound(NOTE(q(half_b),-2),1/delta);
 sound(NOTE(q(half_b),1),1/delta);
 sound(NOTE(e(half_b),5),1/delta);
 sound(NOTE(h(half_b),4),1/delta);
 sound(NOTE(q(half_b),-2),1/delta);
 sound(NOTE(q(half_b),1),1/delta);
 sound(NOTE(dotq(half_b),4),1/delta);
 sound(NOTE(e(half_b),1),1/delta);
 sound(NOTE(e(half_b),1),1/delta);
 sound(NOTE(h(half_b),-2),1/delta);
 %Silence to create a pause before x(2*t) speed
 sound(NOTE(q(8),68),1/delta);
 %Smoke on the Water, by deep Purple, x(2*t)
 NOTE = @(ntype,dev_A4) sin(2*2*pi*2^(dev_A4/12)*A4*ntype);
 sound(NOTE(q(b),-2),1/delta);
 sound(NOTE(q(b),1),1/delta);
 sound(NOTE(dotq(b),4),1/delta);
 sound(NOTE(q(b),-2),1/delta);
 sound(NOTE(q(b),-2),1/delta);
 sound(NOTE(q(b),1),1/delta);
 sound(NOTE(e(b),5),1/delta);
 sound(NOTE(h(b),4),1/delta);
 sound(NOTE(q(b),-2),1/delta);
 sound(NOTE(q(b),1),1/delta);
 sound(NOTE(dotq(b),4),1/delta);
 sound(NOTE(e(b),1),1/delta);
 sound(NOTE(e(b),1),1/delta);
 sound(NOTE(h(b),-2),1/delta);
 
 %######                          #####  
 %#     #   ##   #####  #####    #     # 
 %#     #  #  #  #    #   #            # 
 %######  #    # #    #   #       #####  
 %#       ###### #####    #      #       
 %#       #    # #   #    #      #       
 %#       #    # #    #   #      #######
 
 %lets assume the file Beatles.wav is in the current directory...
 [beatle_song, Fs] = wavread('Beatles.wav');
 sound(beatle_song,Fs);
 beatle_song_rev = flipud(beatle_song);
 sound(beatle_song_rev,Fs);
 wavwrite(beatle_song_rev,Fs,'Ece301_HW1_part2');
 %END CODE
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Basic linear algebra uncovers and clarifies very important geometry and algebra.

Dr. Paul Garrett