emekadavid said:
I have a clip microphone attached to my pc and audacity, an audio
editing software but I want to be able to filter the sound that comes
from my mic to the pc in some way. can anyone advice me on the
equipment to buy, something that raises up the voice that gets to the
system to human conversation, i.e 65db rather than doing through
software. i believe there is something like that.
yours
Generally speaking, in multimedia, it is "garbage in garbage out". If
you have a dirty source for recording, then all the post-processing
in the world is not going to fix it. I learned this, from a few experiments
many years ago.
For microphones, things that help are -
1) Position microphone near source of sound. Use a lapel microphone for example.
Placing the microphone on the top of your monitor or computer, may pick up
too much ambient sound.
2) Use a directional microphone, to separate strong noise sources from the voice.
3) Use multiple microphones, so that in the studio later, you can mix them,
and select the source with the best recorded audio.
Voice occupies a band of frequencies below about 4KHz. You cannot filter out
that band, without attenuating the voice.
This technology represents one option. This technology, combines phased
array techniques, with ambient noise reduction via samples taken between
periods of voice activity. Two microphones in the array, would be a
minimal implementation. More microphones would theoretically allow an
even more directional response.
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http://www.andreaelectronics.com/pc_A2S.htm
"THE SOUNDMAX SUPERBEAM MICROPHONE" - mentions Pureaudio and DSDA
http://www.analog.com/Analog_Root/static/technology/audioVideo/soundMaxFaqsUpgrades.html
http://www.embeddedtechnology.com/product.mvc/PureAudio-0001
Review and USB option.
http://accelenation.com/?ac.id.251.1
*******
So perhaps that would be something to play with. You use a "stereo
microphone", but after the software is finished processing it, the
end result ia a mono output, which is directional and has had some
of the ambient noise filtered out.
Paul
