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Rockbox mail archiveSubject: Re: Very low record levels using external micRe: Very low record levels using external mic
From: Christi Alice Scarborough <christi_at_chiark.greenend.org.uk>
Date: Tue, 29 Jun 2004 22:50:47 +0100 Erik Owens wrote: > This should be an easy question for experts to answer. I'm running > Rockbox 2.2 (Flash) in my FM Recorder 20, and I have a Sony ECM-719 > electret condenser stereo mic (a photo is here: > http://www.ofamily.net/ecm719.jpg and attached). The mic has a battery > and on/off switch, which I guess means it has a pre-amp; That's probably for phantom power rather than a pre-amp. Phantom power is used to drive the microphone's recording apparatus, ie the mic is active rather than passive and requires some power to operate. > I have it > plugged into the Line In jack, and I have Archos set to use "line in" > as the recording source. > > Here's my problem: I cannot get a high enough recording level without > tons of white noise (I mean "hissing") in the background. I've tested > the mic on a different device and the volume levels are fine. On the > Archos, however, even turning the gain up to 18 doesn't help much. (My > voice recording is still faint, but the hissing noice is much > lounder.) Do you have any suggestions? Symptoms are definitely consistent with a lack of a pre-amp. If you have a stereo with mic and phones sockets, you can improvise a pre-amp out of that. That would at least provide confirmation as to whether it's the lack of a pre-amp that's the problem. Christi _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockbox Received on 2004-06-29 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |