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Re: ultrasound detector - 200khz full spectrum recording

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  • jack
    ... it also says.... 705kHz (x16) and 441kHz (x10) sample rate options
    Message 1 of 4 , Feb 1 3:35 PM
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      --- In micbuilders@yahoogroups.com, "ricardo" wrote:
      >
      > > Not all detectors pitch shift. This one records full-spectrum wav files direct to compact flash
      > >
      > > http://www.batbox.com/griffin.asp
      >
      > Err.rh! The blurb says it records only 44.1kHz so it must pitch shift to record. Have you used it?
      >

      it also says....

      705kHz (x16) and 441kHz (x10) sample rate options
    • nbentall
      when it says options , it means from the menu (not an extra cost type option) - all the BatBox Griffin units can record at 16 bit, 705kHz (and 441kHz) and
      Message 2 of 4 , Feb 2 8:13 PM
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        when it says 'options', it means from the menu (not an 'extra cost' type option) - all the BatBox Griffin units can record at 16 bit, 705kHz (and 441kHz) and have a built-in microphone. The bandwidth extends to around 200kHz. (It can also do the heterodyne and frequency division pitch-shifting mentioned by another poster, so you can hear (real-time) whether there is any ultrasound to record). You can also then play back your recordings on the unit at up to /16 rate so you can hear the slowed-down recording straight away - although it's designed for making field (and unattended) recordings of bats, it can be used more generally - it's amazing how much ultrasound there is around the place - jangling keys sound like huge metal bars when slowed down 16x!)


        --- In micbuilders@yahoogroups.com, "jack" wrote:
        >
        >
        >
        > --- In micbuilders@yahoogroups.com, "ricardo" wrote:
        > >
        > > > Not all detectors pitch shift. This one records full-spectrum wav files direct to compact flash
        > > >
        > > > http://www.batbox.com/griffin.asp
        > >
        > > Err.rh! The blurb says it records only 44.1kHz so it must pitch shift to record. Have you used it?
        > >
        >
        > it also says....
        >
        > 705kHz (x16) and 441kHz (x10) sample rate options
        >
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