oivindi Posted April 26, 2004 Report Share Posted April 26, 2004 I´ve just been through hell and back to get both my dealer and Sharp Sweden to refund the money I paid for a Sharp DR-420H (faulty mic input; too much static, particularly in right channel). I got a discounted DR580, and thought that would be a good deal. But, no... I´ve just found that when recording via the microphone input there´s a nasty, constant "spike" at about 16KHz - a frequency that becomes particularly noticeable when I pitch down (etc.) the recordings. I have tried with two different mics (three if you count my headphones used with the mic input), namely a Sony ECM-MS957S and a Shure BG 4.1 - and the 580 shows the spike with both of them. Here´s a graphical representation (produced by the Firium plug-in on OS X) of the output of the both the Sony and the Shure: http://home.broadpark.no/~oidso/Sharp_SonyECM957S.jpg http://home.broadpark.no/~oidso/sharp_and_...d_ShureBG41.jpg Am I experiencing *another* faulty device? I´m sort of going mad... :wacky: anyone got any experience with this? Quote Link to comment Share on other sites More sharing options...
oivindi Posted April 27, 2004 Author Report Share Posted April 27, 2004 OK, this is a strange one. Turns out the 16KHz spike is being produced by my television set! My 29" Sony seems to be emitting a hi freq signal that´s being picked up by my microphone cable... I just tried monitoring the signal with and without my tv on - and the "spike" disappears when it´s off. Wow. You learn something new everyday. I guess my follow-up question is: How can I isolate the mic cable better? It´s the one that came with my Sony ECM-MS957S. Should I buy a new one (that´s better isolated)? Or? /Ø/ Quote Link to comment Share on other sites More sharing options...
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