First of all, whether you use a condenser, dynamic or electret microphone, I will summarize that the clarity of the recording mainly depends on the sensitivity. The higher the sensitivity, the easier it is to record details. The second frequency response refers to the sensitivity performance at a certain frequency. The wider the frequency response, the more frequency content can be recorded. , the more realistic the recording is. , the most compelling example of impedance is a dynamic microphone which is equivalent to a small generator and has a certain power load when the impedance is matched, the maximum output power can be obtained. the input impedance is large, the power consumption of the microphone will be small, but the driving current will be small, which affects the quality of amplification. If the input impedance is too small, the current the microphone must supply will be. very large. S'it exceeds the current that the microphone can deliver within the normal range, distortion will occur. I don't know if the answer is complete, so if you have any questions, keep asking
What. are the devices used to convert mechanical energy and electromagnetic energy into each other?
There is nothing strange in this. Dynamic headphones, dynamic headphones The basic structures of the two types of dynamic speakers and microphones are the same, but the design focuses on different indicators. When current passes through them, they vibrate and emit sound, sound waves result in vibrations, and breaking the magnetic lines of force produces induced voltages. Just like DC motors and DC generators can be interchanged.
However, condenser microphones and electret microphones have different principles and cannot be integratederchanged into sound-generating components.
A generator is a device that converts mechanical energy into secondary energy - electrical energy. According to Faraday's law of electromagnetic induction, the coil (rotor) of the generator rotates in the magnetic field (stator) to generate an electromotive force. For example, the potential energy of water can be converted into kinetic energy to drive a water turbine, moving air flow drives a steam turbine, wind energy drives a windmill, etc. The rotating part of these devices drives the rotor to produce electricity. Three-phase two-pole alternators are commonly used.
Portable wind turbines are commonplace in everyday life.
The electric motor is the reverse device of the generator and is mainly composed of two sets of coils. A fixed group is called a stator, which is used to generate a magnetic field;the other rotating group is called rotor. The rotor induces or passes current and rotates due to magnetic torque in the stator's magnetic field, thereby converting electricity. energy into mechanical energy for production. A coil assembly can also be replaced with reluctance or permanent magnet materials.
In everyday life, electric motors are found in elevators, electric bicycles, electric cars, treadmills, shavers, air conditioning compressors and electric fans.