A Review on the Basics of a Condenser Microphone
What we will first of all seek to address is to see what it is that a condenser microphone actually is. In as much as the dynamic microphones have been considered as some of the best when it comes to stage performance all given their rugged construction and design, the condenser microphones have as well come to have their fair share of acclaim in the market being the favored choice when it comes to studio recording. Read on and see some of the reasons for this.
To begin with, we will take a look at how a condenser mic works. For the Britons and the like people, the condenser mics are as well known to them as the “capacitor microphones”. Basic physics teaches that a capacitor is merely two plates of metal that are placed close one to the other. It is by and large from the same lessons in elementary physics that we get the idea that the closer the plates to each other, the higher the capacitance. This is essentially the basic construction model that goes into the condenser capsule. This is in the sense that the condenser capsule consists of a thin membrane that is quite in close proximity to a metal plate. As one characteristic that is of a must of the membrane or otherwise known as the diaphragm is that it must be electrically conductive, at least on their surface. Among some of the materials that you will find used for this are such as the gold sputtered mylar and for some other models more so the older ones, you will find the use of some kind of exceedingly thin metal foil. It working mode is such as when sound waves hit the membrane, it gets to move comparative to the solid backplate. What this means is that the separating distance between the two plates changes, which eventually translates into a change in the capacitance according to the rhythm of the sound waves. This by far and large is the working principle that sees sound signals change to electrical signals.
For their operation, the condenser microphone will need to be powered by an external power source. In the days gone by, this would have been deemed as a great inconvenience but today thanks to innovation and inventions nearly all mic inputs offer the P48 phantom power that has been more or less been consider the international standard. Given the fact of their low-mass diaphragm, the condenser mics have a superior sound quality. This happens to be so for the fact that they being as low in mass, they will be a lot more effective in following the sound waves as compared to the dynamic microphones that have such a heavy coil attached to them.