"Arny Krueger" wrote in message
...
Geoff Wood wrote:
Jukka Andersson wrote:

lets say I would like to record normal electronic devices and nature
and other things
that does exist in 20-40khz range. dont really care if the sound does
sound coloured since
I will anyway slow it down to lets say 2-4 times to bring it in our
hearing range.

Isn't htere a B+K / DPA that goes up to 40KHz ?


Yes, the 4007. Been there, done that. About $1,300 net. For 40 KHz @ less
money see Earthworks. Maybe half the price.



Yes there seem to be few or more 40khz cabable mics but dont really need
that quality.
isnt there something like ultrasound transmitter - receiver that works in
wider range that
accurate Hz. lets say like 30 000-40 000 Hz it would enought..

..jukka