I took measurements today with both of the mics, using a Sound Devices USBPre audio interface. Very interesting results!
The first chart shows the freq response of the left channel measurements (Due to differing sensitivities the sweeps were at slightly different levels. So I shifted the ECM8000 up about 4db for the sake of comparison). The second shows the phase response (built with the drc Octave scripts). The third shows the normal filters computed with a flat target curve and each of the mic's calibration files (unshifted traces). The ECM8000 filter looks a lot like the mic cal file profile. (I am still suspicious/baffled about drc's use of mic cal files). The fourth chart shows the frequency response of the two mics -- ie a plot the calibration files. I had the ECM8000 calibrated by a third party and Earthworks provides a calibration file for all their mics for an extra $50. It's interesting to see that the ECM8000 does mostly OK in the lower freq, but not so well above 1KHz. Only had time to get these measurements done and have yet to do a listening test. One day I'll try same test with an Radio Shack SPL and also compare the Tascam US-122L to the Sound Devices USB Pre. muski +-------------------------------------------------------------------+ |Filename: mic_cal.jpg | |Download: http://forums.slimdevices.com/attachment.php?attachmentid=3437| +-------------------------------------------------------------------+ -- muski SB3->Bryston BP25DA->Bryston 4B SST->Wilson Watt Puppy 7 Transporter via XLR->Headroom Max Balanced Headphone Amp->Balanced AKG701s & HD650s ------------------------------------------------------------------------ muski's Profile: http://forums.slimdevices.com/member.php?userid=3670 View this thread: http://forums.slimdevices.com/showthread.php?t=38758 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
