[LAU] Software algorithms?

Hi group, I wish to thanks all of you for the responses about 'better mics'. I think I need to clarify what I am looking for. I'm writing a suite of programs to be used for a 'Voice Messaging System'. The system will be used during field events where communication from PC to PC will take place. There by the need for inexpensive hardware. We are dealing with cheap HAMs here after all! So supplying everyone with a mic is going to be costly to begin with. A preamp, which is the best solution, will be too costly. So I need to build a software fix. My next question for the group, are there any URLs dealing with sound software algorithms? Routines to increase volume, building filters. removing noise, etc. I have done a Google search but I guess I am not using the right search strings? I'm not looking for programs but just the code to do it. Thanks again to all of you for your time. This group has been very helpful. -- William Estrada MrUmunhum(a)popdial.com Mt-Umunhum-Wireless.net ( http://Mt-Umunhum-Wireless.net ) Ymessenger: MrUmunhum