One of the most important things you need to know about microphones is what are the different microphone polar patterns? Polar patterns on a microphone have a major impact on the quality of the sound it produces. Let’s say that we take a voice that we want to capture, and we turn the microphone on, and recorded it. Now let’s try to play that same recording through a normal microphone, but with a little bit of tweaking, we can change the microphone polar pattern, in order to change the way the sound is distributed. Let’s see what happens when we do just this…
If we listen to the speaker and locate the front of the speaker at 100 feet from the listening position, and we turn the microphone on and off very rapidly, and vary the distance between our ears from time to time, we will hear a “buzz” as the waves travel from the speaker to the microphone diaphragm. Now if we move the microphone about the same distance, we will hear a “rumble.” This is because the diaphragm will pick up these vibrations and produce a cardioid response to them, resulting in a much different sound.
One of the reasons that polar patterns can be changed, is by using a power source that is too strong. When we use too much power, the strength of the resulting wave patterns will be too strong, and they will cancel each other out. To fix this, we often run a series of filters through the amplifier, and often time, we use one or two channels for low frequencies, and a separate high frequency filter for bass frequencies. This ensures that the wave interference is reduced.
Another common way to change the wave interference caused by a changing polar pattern, is to run a capacitor across the microphone elements. This capacitor changes the capacitance of the elements, resulting in a change in wave interference. We often times use two filters on the front of the microphone for the low frequencies and another one for the high frequencies.
There are also certain types of filters that change the wave interference caused by the changing polar pattern, and also some devices that stop the vibrations at a particular frequency. The end result is that the end result is two different sounds produced from the same signal. This can be done with some transmitters and microphones. For example, some transmitters have a mid-frequency which stops the higher frequency waves from hitting the sensitive parts of the diaphragm, and then it sends the lower frequency waves through the speaker cone.
Basically, there are many factors that contribute to the way that the sound is produced by a microphone. However, we are going to talk about the microphone polar patterns in our explanation. These are just a few things that you need to know about polar patterns, so hopefully this will help you get the information that you need in order to understand why they are important. If you want more information, just do a search on the internet for “microwave transmitter polar patterns” or “amp coil polar patterns.”
