The basic way to calculate your maximum heart rate is to subtract your age from 220. For example, if you're 45 years old, subtract 45 from 220 to get a maximum heart rate of 175.
If you have an eighth-inch jack, all you've got to do is plug it into this port and start testing sound. 1  If you have a USB jack on the end of your microphone, most computers will have two or more USB ports on the side, or the back of the computer. 2  Simply plug the USB jack into one of these ports.
You may hear feedback from your PC speakers when one or more of the the following conditions are true: 1  You increase the Microphone Boost option. 2  The speakers are too close to the microphone.3  The speaker volume is turned up so as the microphone hears the speakers. 4  You have a very sensitive microphone.ou may hear feedback from your PC speakers when one or more of the the following conditions are true: 1  You increase the Microphone Boost option. 2  The speakers are too close to the microphone.