My medium tech solution: earplugs with holes cut in them that music plays out of, more or less. The isolation puts active noise cancellation to shame: http://gr

My medium tech solution: earplugs with holes cut in them that music plays out of, more or less. The isolation puts active noise cancellation to shame: http://graphs.headphone.com/graphCompare.php?graphType=6&graphID[]=3411&graphID[]=733&scale=30 http://graphs.headphone.com/graphCompare.php?graphType=6&gra... Graph is of attenuation in dB: lower values are better, and positive values are worse than no blocking at all.