Machinery hum, buzz, electricity generator

[[-0.025,-0.07,-0.091,-0.134,-0.164,-0.248,-0.243,-0.301,-0.231,-0.221,-0.274,-0.329,-0.268,0.303,-0.275,0.262,-0.303,-0.263,-0.208,-0.263,-0.38,0.297,0.278,-0.239,0.234,-0.42,-0.311,0.239,-0.247,-0.231,-0.292,-0.28,-0.263,-0.219,0.263,-0.307,-0.299,0.267,0.307,0.275,-0.292,-0.295,0.261,0.226,-0.294,0.299,-0.243,0.238,0.264,-0.259,0.312,0.299,-0.262,-0.318,0.273,-0.296,-0.351,-0.276,0.229,-0.28,-0.289,-0.276,0.275,-0.246,-0.248,-0.257,-0.323,0.243,0.234,-0.266,-0.294,-0.262,0.261,0.256,-0.252,-0.276,-0.295,-0.248,-0.241,0.245,0.279,0.245,-0.316,-0.246,0.25,-0.289,-0.258,-0.283,-0.31,0.308,-0.312,-0.298,-0.337,0.23,-0.257,-0.337,0.245,-0.275,-0.286,0.219,0.272,-0.359,-0.264,0.3,0.276,-0.263,0.277,-0.307,-0.23,-0.238,0.205,0.251,0.245,-0.254,-0.339,-0.273,-0.305,-0.331,0.266,0.293,0.239,0.312,-0.298,0.231,0.208,-0.227,-0.33,-0.278,-0.285,0.265,0.248,-0.239,-0.268,-0.262,0.27,0.252,0.251,0.254,0.253,-0.277,0.252,0.228,-0.274,-0.247,0.271,0.214,-0.256,0.231,-0.324,-0.276,0.265,0.231,-0.254,-0.331,-0.249,-0.238,0.237,0.268,0.288,-0.27,-0.306,-0.219,-0.234,0.29,-0.255,-0.267,-0.278,-0.309,0.241,-0.321,0.298,0.286,-0.295,-0.239,-0.36,-0.242,0.223,0.241,-0.247,0.267,-0.274,-0.213,0.265,-0.22,-0.291,-0.273,-0.285,0.277,-0.23,0.26,0.302,-0.23,-0.221,-0.27,-0.302,-0.237,-0.253,-0.29,-0.271,-0.315,-0.336,-0.282,0.264,-0.257,0.211,-0.268,0.309,0.267,0.198,-0.272,-0.246,-0.296,0.288,-0.238,0.252,0.292,0.305,0.297,-0.278,0.26,0.292,-0.274,-0.305,-0.275,-0.22,0.24,-0.292,-0.279,0.223,0.304,-0.262,-0.314,-0.329,-0.303,-0.261,-0.311,-0.243,-0.245,-0.282,-0.229,-0.254,-0.253,-0.281,0.256,0.31,0.228,-0.25,-0.294,-0.276,-0.23,0.272,0.332,-0.349,-0.299,-0.311,-0.263,0.221,0.259,-0.321,-0.257,-0.262,0.242,-0.212,0.225,-0.267,-0.252,-0.221,-0.23,0.242,-0.319,-0.27,0.271,-0.225,-0.32,0.255,0.317,0.23,-0.212,-0.321,-0.298,-0.289,-0.266,-0.329,0.236,0.234,-0.303,-0.285,-0.255,-0.238,-0.252,0.31,-0.306,0.242,-0.225,-0.273,-0.301,0.303,-0.326,-0.365,-0.257,-0.289,-0.284,-0.265,-0.253,0.272,-0.25,0.317,-0.317,-0.265,-0.254,0.296,-0.319,-0.266,0.279,-0.274,-0.249,-0.259,-0.322,-0.302,-0.235,0.231,-0.299,0.282,-0.262,-0.236,-0.223,-0.267,-0.303,0.284,0.33,-0.281,-0.3,0.271,-0.273,0.24,0.238,0.3,-0.272,-0.273,-0.242,0.283,0.241,0.234,-0.328,-0.279,-0.236,-0.278,0.217,0.322,-0.34,-0.276,-0.274,-0.244,0.317,-0.283,-0.272,0.315,-0.214,-0.249,-0.295,0.279,-0.335,0.339,-0.254,0.26,-0.295,0.265,-0.298,-0.261,0.263,0.256,-0.271,-0.254,-0.286,-0.242,-0.273,0.301,0.284,-0.249,0.283,0.233,-0.252,-0.282,-0.295,-0.245,-0.354,-0.252,-0.225,-0.27,-0.296,0.24,-0.24,0.294,-0.269,-0.239,-0.26,-0.225,-0.25,-0.283,-0.252,-0.288,-0.217,-0.25,0.29,-0.293,0.259,-0.236,-0.223,-0.232,0.249,-0.275,-0.23,-0.26,0.228,-0.294,0.262,0.25,-0.231,-0.308,-0.291,-0.241,-0.236,-0.258,0.234,-0.269,-0.263,-0.284,-0.258,-0.207,0.255,-0.279,-0.281,-0.232,-0.288,0.293,-0.363,0.231,-0.246,-0.263,0.251,0.255,-0.28,-0.291,-0.246,-0.281,0.235,0.235,0.277,0.252,0.32,0.262,0.25,0.224,0.215,0.297,-0.267,0.244,0.26,-0.272,-0.232,-0.25,-0.265,-0.229,-0.304,-0.257,-0.248,-0.236,-0.207,0.27,-0.292,-0.337,-0.25,0.262,-0.239,-0.256,0.31,-0.225,-0.219,-0.21,0.288,0.247,0.289,-0.273,-0.237,-0.217,-0.299,0.203,-0.288,-0.264,-0.281,-0.278,-0.239,0.27,-0.297,-0.275,0.26,-0.231,0.23,0.264,-0.281,-0.312,0.278,-0.254,0.314,0.335,-0.256,-0.251,-0.282,-0.283,-0.292,0.318,-0.208,-0.321,-0.319,-0.303,-0.269,-0.216,-0.252,-0.32,-0.343,0.242,-0.228,0.267,-0.25,-0.254,-0.269,0.269,-0.26,-0.313,-0.27,-0.266,-0.252,-0.279,-0.34,-0.233,-0.27,0.235,-0.33,-0.294,-0.314,-0.249,0.243,0.271,-0.293,-0.286,-0.28,-0.241,0.291,0.272,-0.302,-0.268,0.228,-0.227,0.298,0.259,0.311,0.285,-0.276,-0.346,-0.233,0.254,0.254,-0.266,-0.294,-0.228,-0.288,-0.271,0.312,0.311,-0.332,-0.222,0.304,0.218,-0.342,-0.258,0.269,0.279,0.232,0.276,0.247,0.25,-0.262,0.252,-0.264,0.279,-0.24,-0.306,-0.293,-0.298,0.277,0.269,0.23,-0.244,-0.332,-0.314,-0.271,-0.242,0.239,-0.261,-0.284,-0.272,0.26,-0.273,-0.254,0.26,-0.299,-0.318,-0.273,-0.244,-0.266,-0.294,-0.254,0.22,0.299,0.261,-0.247,-0.241,-0.233,-0.257,0.277,0.249,0.313,0.251,-0.251,0.238,-0.315,-0.32,-0.276,-0.192,-0.258,-0.228,-0.305,0.257,0.216,-0.295,0.229,-0.244,-0.338,0.249,-0.25,-0.275,0.241,0.231,-0.237,-0.31,-0.261,-0.332,-0.258,-0.264,-0.281,-0.278,-0.251,-0.33,0.313,-0.237,0.262,0.234,-0.369,-0.265,0.259,-0.248,-0.266,-0.268,-0.257,0.203,0.227,-0.263,0.31,-0.263,0.271,-0.232,0.264,-0.29,-0.255,-0.239,0.276,0.234,0.296,-0.264,0.278,0.226,0.251,0.268,0.3,-0.284,-0.252,0.226,0.287,-0.286,-0.275,-0.283,0.215,-0.352,-0.256,-0.256,-0.264,-0.308,-0.202,0.252,-0.301,-0.269,0.292,0.269,-0.276,0.269,-0.294,-0.261,-0.282,-0.224,-0.274,-0.318,-0.304,0.26,0.295,-0.256,-0.283,-0.289,-0.261,0.26,-0.28,-0.277,0.234,-0.269,-0.228,-0.239,0.32,0.272,0.241,-0.23,0.22,-0.255,-0.31,0.245,-0.256,-0.203,0.239,0.25,-0.259,0.276,-0.249,0.259,-0.246,-0.368,-0.253,0.212,-0.231,0.243,-0.298,-0.267,0.324,-0.255,0.27,0.279,0.228,-0.238,-0.263,-0.236,-0.348,-0.278,0.228,-0.234,-0.279,0.238,-0.314,0.304,-0.233,-0.267,-0.287,-0.318,0.249,-0.268,-0.28,-0.235,-0.284,0.323,-0.229,0.228,0.356,-0.318,-0.285,0.259,0.254,-0.227,0.224,0.255,-0.271,-0.23,-0.259,-0.264,0.282,-0.362,-0.244,0.237,-0.267,-0.304,-0.258,0.271,-0.265,-0.288,0.252,0.262,-0.267,0.258,-0.218,-0.252,-0.356,0.287,0.259,0.354,-0.29,-0.236,-0.313,-0.244,0.245,-0.256,-0.269,0.313,-0.278,-0.236,-0.226,-0.267,-0.33,-0.267,-0.295,-0.212,-0.253,-0.319,0.272,0.358,-0.332,-0.214,0.254,-0.304,-0.265,-0.288,0.257,-0.279,-0.277,-0.26,-0.226,-0.278,0.241,-0.329,0.302,-0.277,-0.242,-0.283,0.267,-0.228,-0.208,0.25,0.223,-0.276,0.307,-0.291,-0.269,-0.28,-0.247,-0.28,-0.327,-0.316,-0.268,0.222,-0.24,0.288,-0.266,-0.295,0.256,0.253,-0.25,-0.271,0.279,0.236,-0.25,0.277,0.254,-0.316,-0.255,-0.224,-0.249,-0.319,-0.324,-0.248,0.253,-0.266,-0.232,-0.285,-0.288,0.268,0.254,-0.239,0.288,-0.296,0.253,-0.24,-0.199,-0.292,0.267,-0.261,0.24,0.262,-0.231,-0.264,-0.285,-0.223,-0.217,0.227,-0.253,-0.273,0.225,-0.279,-0.243,0.252,-0.29,0.248,-0.246,-0.248,-0.218,-0.28,-0.26,-0.255,0.198,-0.212,0.27,0.252,-0.286,-0.227,0.221,-0.308,-0.247,-0.243,-0.253,-0.224,-0.23,-0.262,-0.262,0.244,-0.249,-0.31,-0.228,-0.279,0.217,0.228,-0.246,-0.239,-0.291,-0.301,0.289,0.27,-0.26,0.285,0.248,-0.25,-0.237,0.244,0.268,-0.306,-0.278,-0.269,-0.264,-0.242,-0.283,-0.256,0.241,0.237,-0.245,-0.245,0.216,-0.301,0.228,-0.235,0.281,-0.268,0.217,0.195,-0.203,0.221,-0.215,-0.203,0.192,-0.186,-0.153,-0.174,-0.184,-0.133,-0.139,0.128,0.134,-0.097,-0.088,0.082,-0.075,-0.073,-0.07,0.051,-0.043,0.032,0.021,-0.018,-0.005]]