I assume the mic is connected to your computer via the sound card... rather than a USB mic. As long as the volume is not too high and you are not distorting the audio I am not sure why it should sound so bad (assuming you dont actual sound like that ). Note you can adjust the bass and treble using the Audio Effects, drag the Bass and Treble effects to the audio track and then adjust in the clips Properties panel..
Thanks Paul, it works - I now have my dulcit tones that my better half knows and loves!!!!!!!!! (but I would say that, wouldn't I)
Glad to hear that you sound as you should!!!