|   | 56 |  | 
          
          
            |   | 57 | == Troubleshooting == | 
          
          
            |   | 58 |  | 
          
          
            |   | 59 | === Audio Package === | 
          
          
            |   | 60 | If your receive an error stating that you don't have the audio package in Octave you will need to install the following package. | 
          
          
            |   | 61 |  | 
          
          
            |   | 62 | {{{ | 
          
          
            |   | 63 | sudo octave | 
          
          
            |   | 64 | pkg install -forge audio | 
          
          
            |   | 65 | }}} | 
          
          
            |   | 66 |  | 
          
          
            |   | 67 | If this tells you to install liboctave-dev, in a different terminal enter | 
          
          
            |   | 68 |  | 
          
          
            |   | 69 | {{{ | 
          
          
            |   | 70 | sudo apt-get install liboctave-dev | 
          
          
            |   | 71 | }}} | 
          
          
            |   | 72 |  | 
          
          
            |   | 73 | then retry the above steps for package installation. | 
          
          
            |   | 74 |  | 
          
          
            |   | 75 | To verify that you have the package installed you can enter | 
          
          
            |   | 76 |  | 
          
          
            |   | 77 | {{{ | 
          
          
            |   | 78 | pkg list | 
          
          
            |   | 79 | }}} | 
          
          
            |   | 80 |  | 
          
          
            |   | 81 | and should see the following | 
          
          
            |   | 82 |  | 
          
          
            |   | 83 | [[Image(pkglist.png, 650px)]] | 
          
          
            |   | 84 |  | 
          
          
            |   | 85 |  | 
          
          
            |   | 86 | The audio package uses external software to play and record audio. The following should be sufficient. | 
          
          
            |   | 87 |  | 
          
          
            |   | 88 | {{{ | 
          
          
            |   | 89 | sudo apt-get install sox | 
          
          
            |   | 90 | }}} | 
          
          
            |   | 91 |   | 
          
          
            |   | 92 | === Signal Package === | 
          
          
            |   | 93 | If you receive the following error | 
          
          
            |   | 94 |  | 
          
          
            |   | 95 | [[Image(fir1_err.png, 650px)]] | 
          
          
            |   | 96 |  | 
          
          
            |   | 97 | you will need to install the signal package. | 
          
          
            |   | 98 |  | 
          
          
            |   | 99 | To install the signal package you will need to use the following commands | 
          
          
            |   | 100 | {{{ | 
          
          
            |   | 101 | sudo octave | 
          
          
            |   | 102 | pkg install -forge signal | 
          
          
            |   | 103 | }}} | 
          
          
            |   | 104 |  | 
          
          
            |   | 105 | If you receive the following error: | 
          
          
            |   | 106 | [[Image(signal_err.png, 650px)]] | 
          
          
            |   | 107 | you will need to install the control package with the command | 
          
          
            |   | 108 | {{{ | 
          
          
            |   | 109 | pkg install -forge control | 
          
          
            |   | 110 | }}} | 
          
          
            |   | 111 | Then redo the package installation for the signal package. |