Hi Chris.

thank you very much.

In fact I have a really good USB mic, but the software for the mac is
not accessible at all, and therefore I can not adjust the recording
level. It is the 900usb stereo mic from xml.

Best regards Annie.

2010/4/30, Chris Blouch <cblo...@aol.com>:
> This has been covered before but generally there are three audio signal
> levels: speaker, line and mic. Obviously speakers are high powered while
> line level is the output you typically get from a CD player (not
> headphone) or DVD player. Mic levels are very very tiny. There is a
> diaphragm which vibrates with the sound in the air and moves a tiny coil
> of wire near a magnet, generating a very small electrical signal. All
> this means is that your Mac has a line-in jack expecting line-level
> signals while mics produce something much much smaller. So to use most
> mics with a mac you need something called a pre-amp. Pre-amps take the
> tiny mic signal and, without adding a lot of noise, boost it up a couple
> multiples.
>
> So if all you want is a mic to skype with you could just go with some
> USB all-in-one. If you want better quality then you'll want to get a
> real mic and a preamp. Something cheap like this:
>
> http://www.sweetwater.com/store/detail/TubeMP/
>
> and a basic Shure SM58 would be a good start.
>
> CB
>
> Annie Skov Nielsen wrote:
>> Hi all.
>>
>> I have been trying with more microphones, if I could use an external
>> microphone. I found one that I could connect to the line in, but the
>> recordings is very low. I have a mac book pro with one mic/headphone
>> and then I have the line in. Is there any way I could use the
>> headphone/mic for an external mic.
>>
>> Best regards Annie.
>>
>>
>
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