Generally speaking, condenser microphones are sensitive and have rich details when recording, and the recorded sound is very real. However, a real sound is not necessarily a good sound. Why do some actors on CCTV sing in lie on the spring evening? It is because the sound of the Spring Festival Gala...

There are often some purchases. When purchasing microphones (microphones), I can’t understand the "sensitivity". Now, a simple analysis is as follows:Sensitivity refers to the size of the electrical signal output by the microphone under the action of a certain intensity of sound. High sensitivity means that the microphone’s sound-to-electrical conversion efficiency is high, and it is sensitive to weak sound signals. Technically

Compared with traditional electret microphones (ECM), capacitive microelectromechanical microphones are made of silicon semiconductor materials, which facilitates the integration of analog amplifier circuits and ADC (Σ-? ADC) circuits to realize analog or digital microelectromechanics Microphone components, as well as the manufacture of miniaturized components, are very suitable for light, thin and short portable devices

1. Hood insulation cotton (also called automobile sound insulation cotton), it mainly absorbs the noise when the engine is running, and also has a heat insulation function, which can effectively protect the original paint of the hood and avoid discoloration of the paint due to high temperature for a long time. 2. Car chassis sound insulation materials, vibration-damping mats and moisture-proof sound-proof

The car with active noise reduction function comes from the anc active noise reduction system developed by Bose. BOSE is a pioneer of active noise reduction technology. The principle is to first collect the characteristics of the noise waveform, and then calculate the inverted wave through the built-in processing chip, and then cancel it through the high-reduction speaker. Therefore, the necessary equipment for the active noise

With the development of digital signal processing technology, more and more electronic products use digital audio technology. Digital audio interface has become the trend of development, and ECM and MEMS digital microphones using pulse densitymodulation (PDM) interfaces have also been born. Currently, ECM and MEMS digital microphones have become the mainstream of portable notebook

The active noise reduction of cars is favored by many of our car friends. The noise of cars is the last thing we want to encounter in our daily driving. How to use the active noise reduction of cars is what many of our car owners are more puzzled, especially thinking Owners who want to buy a car should have a better understanding of this configuration

Bluetooth headsets, which are widely used in the current market, actually apply Bluetooth technology to hands-free headsets, use high-precision sound quality microphone configuration, so that users can use audio products conveniently and quickly, and freely in various ways. Voice calls. After the advent of Bluetooth headsets, the market share soared rapidly and was well received by customers, especially in the business field.

(1) That is to say, the capacitance is proportional to the dielectric constant of the medium, proportional to the area of ​​the two plates, and inversely proportional to the distance between the two plates. In addition, when a capacitor is charged into Q, the two plates of the capacitor must form a certain voltage, and the relationship is as follows: C=Q/V.(2) For electret microphones, there is a capacitor made up of