--_003_EDE5DBD09AD74CA99C19F615DB54E85Civp1_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable > a system that records the audio in a room with some good quality Sai, you might find the attached useful, a type of compander (compressor- expander). I made it to bring up background sounds without over- amplifying the near and middle-distance ones. Works well and some- times interestingly on instruments. Included are some test figures Philips have made the NE570 for a long time http://www.onsemi.com/pub_link/Collateral/NE570-D.PDF Expanders can be a bit too hissy though and you may need to add a low-pass or band-pass filter. If voice is all you really need to record then you should be able to get a reasonable spectrum Joe= --_003_EDE5DBD09AD74CA99C19F615DB54E85Civp1_ Content-Type: image/gif; name="cva.gif" Content-Description: cva.gif Content-Disposition: attachment; filename="cva.gif"; size=2909; creation-date="Sun, 27 Jul 2014 01:15:20 GMT"; modification-date="Sun, 27 Jul 2014 01:15:20 GMT" Content-Transfer-Encoding: base64 R0lGODlhwgG4AIAAAAAAAP///ywAAAAAwgG4AAAC/oyPqcvtD6OctNqLs968+w+G4kiW5omm6sq2 7gvH8kzX9o3n+gQgwG/o7YbEovGIHAGDh54wCY1Kp1Sas4kVPqvcrvcLdjzHgWv4jE6rh2Tmcg3P bSHb33g5j+s17bI/vxe4YifxRnYomHjRdwWo+KhU6MfklkUJialQh3eZ6dlhFmSXxzj5Z/qZqrpq U3royBorO7s4qolVWQlLy9vrS4d7qvurB7hLjAzcZMiJmgwWmvs8TY05eo1tGHyX3X1dDR5OdNwQ Lbwonq5ulWHMtw4fP4hDLm9/b1E/j8/fj6GvAqC/gf0EojBIMGE8hCYYKnwYziEJiRArJqMoAqPF /nc+nHmYU0+jQpEfSG7Ml8DkrY7KTlJQyQGmS0mUnBD6uK1ZmZszI8jk2HPfpFAk2yCSFvSBSJ7t krIgasokVGnm7G3i1mmBxj7/nM476rGpK0v8tFENy7JpWnReA3bkGjOtGSA/U009N5cBRpBA256o ExUESGZ/6trdFrhqsK5rUfp9HGasm11bF7OFjJmL5FOwlr5Rmzm0lM2NyuGMKzp1kqvLtGS1DLqv 6tl7yH3WC4q27trAbqfMvTu4GtvLcKMWjrwEU+UtRa3cYDi5cLjPGyttXhz2Zencj78mC16p7996 XXvvrvUmz+XktWtixk3LeMvRkQzuhviSt/3Y/sQvRS+GXIEZ556ARglI4HeP8NXbb5V98955ANIH XiPrFYgbWPoVZhZakFBnWnWxiSfbhKLoBBVdNWGo1YknmlfYUBuywh4MBs2HnYkOVihjYhXAyNdR QHroFEM4BmjNkZH5mMuQApXyFllOiiaRki0uyGIVYKW4YpZrbckkjERS89NeT2JpHTTwtdYlYIXY shNWLvbo5jo1QgcKf3ruyWeffv6ZTXs6IlMmdGfSYeU/iZ5X36DQjLndjwjpE12j+Tk6k5FG8tDQ U4ti6g+IEUZ6HXOgnnrlmJ+m6lOnqL6aBZwpVcapqVatOadguMbJJnog3vnjS67KA6aojOHF/iSk QfFJn5gjljpRqMnWdddZVOa4U5qO0RRtQdN2y161mBHnAynAcRtJWRsayxFXQ14L7Xz/CdvtPaRl dCmUoRF35Lz04muvgV7+O2CdlqZjG7l4EhzCwYJAuN6qPsGpHsUSn1TUua2WKyevqhJYJyrm5gqr VactvDFixZYHoXMuR3XHrDOWTOzJJSYoIpdomStkkyL3qCzNz2QsYYgyZ4eIIzX2fM7PHQsNj2e0 ottYip2Nd2Be+b0Lqzu9Kl2x0oKyLB9lYwt23F7B5uyjMbJuzWGH37Br4nJy74zg2AoPyGrQpK49 MM4brzzMe+Hm9OVKdH/BGskf4WHx02hH/rluJwwiy7fRlcu6+M0MU3Qjx7167Gygef8Mm+TD3VvS YlMq+M7Ibc+KYsFZUhwrnYH//bnngufZsjp3ids6LmC6ta7ZxzfdKtMapguU2lQDHHDlsKPMegpj dfYtUo7zaN7z1PNxsYia12uy9X4TfBXxtibdns6fUQp+l9fbzM70DaurvkwhU74+lJEuKxGL2f/E gKvwaWtyrWDY/vCRPfwZLHPjoocDGZi+XAFLUeqh3ej2ZcFaoQ9qu3FYyk44PhLqxoTYOt8DVVjC EOqveDBcoQxR+MIatqBxA0wP5FRHQET98INsm6GNeFApHbrgbuKzHI+KiKT+nQ8gLPRP/p+GFaqw ZWRXkXPLvcR0OZ0BbW/fssndRDiaJBJkgjScChu1pzJL3Od1mFsc7s6iojFecDVY5N+l9ne5mR0k jpMJEOGSJQnC0dGIR1BjFmsXichxbZBSVAwen8g8j91CkepjpBHqU0VrUPA0cHFfvVYWxjK+LGiH 1NoBW2gfSq5xlGmjUOdsVkD7aZCL0aAiLxWIuj3Gso/VwxwNVXm/pIQSfzksyK4ep8VdLnMa0yQS sAzDvdF1UIkJmSaOREWtcnyRm908YgS90UxrIctZ5KxZDCIolPjVr5rthEM14RnPfCWGnjYMoiZb k83bESKQR3wnIQOIwZlxiZ+qIYxz/kqJnb0R9AX3NJ4pZZm3hfYilw37JRGZE7OHus5BF0qm7Bha 0eKUjXb9SaflEpjMD2HyXGK8KPVKUy2L6c6kJUUo9KaAzYrYVDY1FQpOaSmMRabMkkvUzAjLectt XTKmJzsqOHeayTs1kaJOfaq0kCpAPUa1ljJyl5ScuNQFNlVLxPTjWKmGz/e1yTfbBCMSJ2pQttrq q4LUWDCHqsyuevVW0SyJLSD2zMww9Fg/rSdkFss7Zjq2LZCVagonS1nBNhazXimKTobyTB6ab7Se 5KwAt9msIU5RiCt1RqP8ZZP61URfZyMtDk37OJWFdKSww6ugnvdaQALtkrRVK1X7/uatj2qMc6KD oyt261o59pSMBzqu77qitWyRrLgA3c+zIMhdQ1UtvKeUY9PuGCNgQgq9k9wralwTpD++DXCWXQM7 /8I3lYhreEY1ryXl18nmHRS/VfUef20LywQvKa9gBc3byAs9+P03TAH+JwC3elnGGhCTEFZwFKPV 2gEmkKP/HGjclIu93elPXw6TjF2n+uKW5DSfHMzjbJ8m2vqiUQl0jO06ZYu62MJXxTImMrZYHM+6 EhCmw/Wl5FpcjKN5GHs6raRFu8sSV8apfFF8a1oVamShRvlFE3Ok2JAZZONoOagoPu38mgsvewJq zviJF/iGPFVjlnVFXsatZM8Q/p8yf/e3MGUyaJ9cGjpx2c9FA7SUoRXZSDN6zPYcdGmFOWlKG+rF DyYi6Cx920xXA7baHa7LGPFpxupY1GQSLp4plzVx6gnUU5bFfHncsQ121tWT0UauPURGTNc6Fgdr ZWr0y+cdibW3w0bwlPu8YDgGEdoQkYrxoju3WGm12bXdsQ8trIhb31TZPhXzclXKW7P+7pirlucq XsuU9j4WeDY+dPxuE9DNCpsz5UYDlMEcZ6C21du/oDa3YlxZWiR832FluK0X/ZIfqjbgo8Gow1m9 Uc3q+9IYz7hejcagpfmOMhDveBcWTvDslNrGvk35N8Ns8pNr/MIbRms+6mxM/sDGPA0o96SEKcjm 7u08ET0PdRwT7ZFwSjHcJf8XiUH4cZDx+1cRnilvrNuOHh975u5+9ZkZKJ8GxyG4pYP5Q4qu4OqG uNuybqnr5tL0qIOYzGIPrNxdmnJiBHfZWN8I2iGN97z7wlLZVqdiue5XSSt8h0uHOhWCrmq9izvC ia3g3RNK36ETCvF/5rjm3835xF/884e5PLszT3qPP37gnk+9J/7+4QwL3vWgN33njV5w7Xl067YX /ex5EXc7L+/wvW9060Fvwvj23SKwdyHmR0/spyDN7CMJvfFxP3ga6zxTwd9h9z1Yi+bfsK3bjwid z4/+9Kt//exvv32l3fhx/n2f9PAurK6LRPv8Q1//qRc//yfkf//nKwJIgM5WgK4XgN3RRd/jT6qW Y53lXTHBZfRTNchFa4t3UF4Dc/PTYZjSZxRIIQaYSNQkT8dDbUW1fCPhdjcTNlgRTYeFbznhdSfG gFbDCfMHVKiFggYXXX31KieFTIcEN4WTXoZHFXnxWYdhbN4TKR24LN0HhEaBaiwXFvwFYHGTSrrD g462hJlkWU6oI1GYbla2SUd3Vl74IsBUfu+XZ3BnXHD1RyVjbM4jRr9lXtmiQOp2hj6WgFuUa4Tx Sl8IZ1DDUVIYdni4T31TV4kWPjEIa7rQhwdIG5Eoif1UiZeIiZmoiZvIB4mdmBkFAAAAOw== --_003_EDE5DBD09AD74CA99C19F615DB54E85Civp1_ Content-Type: text/plain; name="ATT00001.txt" Content-Description: ATT00001.txt Content-Disposition: attachment; filename="ATT00001.txt"; size=224; creation-date="Sun, 27 Jul 2014 01:15:20 GMT"; modification-date="Sun, 27 Jul 2014 01:15:20 GMT" Content-Transfer-Encoding: base64 LS0gDQpodHRwOi8vd3d3LnBpY2xpc3QuY29tL3RlY2hyZWYvcGljbGlzdCBQSUMvU1ggRkFRICYg bGlzdCBhcmNoaXZlDQpWaWV3L2NoYW5nZSB5b3VyIG1lbWJlcnNoaXAgb3B0aW9ucyBhdA0KaHR0 cDovL21haWxtYW4ubWl0LmVkdS9tYWlsbWFuL2xpc3RpbmZvL3BpY2xpc3QNCg== --_003_EDE5DBD09AD74CA99C19F615DB54E85Civp1_-- .