The sensitivity of the pickup product label is not directly related to the quality of the pickup
What is the pickup sensitivity? The pickup sensitivity is an indicator that reflects the sound-electricity conversion capability of the pickup. It is defined as the output voltage or electric power under the action of the unit sound pressure. There are many ways to express the sensitivity. The method we use is expressed in dB and is defined as 0dB=1V/Pa@1KHz, that is 1KHz frequency, 1V(rms) voltage under the action of sound pressure intensity 1Pa, and the sensitivity is 0dB. This is a representation method prescribed by the national standard and is commonly used by microphone microphone manufacturers at home and abroad. In the order of -40dB, -30dB, -10dB, 0dB, and +10dB, the sensitivity gradually increases.
Some people mistakenly believe that the sensitivity refers to the smallest sound signal that can be picked up, so the smaller the value is, the more negative it is. The sensitivity is even higher. In the bidding document, there is even a requirement that the sensitivity is less than a certain value (such as -30 dB). This is wrong.
(Kanazawa's dual microphone digital noise reduction pickups, Model: A17-AUDIO)
The sensitivity is not related to the quality of the microphone. The common microphone microphone has three kinds of moving coils, pure capacitors and electret capacitors. Dynamic and pure condenser microphones have no amplification circuit. The sensitivity reflects the performance of the microphone microphone to some extent, and the sensitivity and performance are good. Electret condenser microphone microphone head is a capacitive type, internal FET signal amplifier circuit, its sensitivity is not related to the performance is good or bad, just a product specification parameters, sensitivity error accuracy (consistency) than the absolute value more important.
Monitored microphones generally use electret condenser microphones and microphones to increase gain amplifiers. When the sensitivity of pickups is defined, the two are viewed as a whole. The sensitivity of the microphone microphone and the gain of the microphone determine the sensitivity of the pickup. The pickup sensitivity is also just a specification parameter, and it is relatively more important that the error is small and consistent.
Changing the pickup's sensitivity is extremely simple, usually by simply changing the resistance of a resistor. This sensitivity based on the amplifier gain has nothing to do with the quality of the pickup.
Sensitivity can not be too high, a wide range of adjustments only when the sensitivity of the pickup and the system match, not too high nor too low. The sensitivity of the pickup is too low, the amplitude of the output signal is small, and the transmission is susceptible to interference. After entering the back-end equipment, the relative signal noise of the equipment is low, and the digital SNR is also low. Even if high-gain active speaker amplification is used during synchronous monitoring and playback, the signal-to-noise ratio cannot be improved and the pickup effect is not good. The sensitivity of the pickup is too high, and the output signal amplitude is too high to cause saturation distortion. The top and bottom of the sound signal are cut off.
The sensitivity of the pickup depends on the interface requirements of the back-end device. The rear-end connection devices of the pickups include hard disk video recorders, acquisition cards, encoders, network video servers, network cameras, computer sound cards, active speakers, mixers, optical transceivers, and audio arrays. The input signal level range required by these devices is very different. The only way to solve the problem is to adjust the sensitivity of the pickup. The wider the sensitivity adjustment range, the better the ability to adapt to different devices.
Some people mistakenly believe that the sensitivity refers to the smallest sound signal that can be picked up, so the smaller the value is, the more negative it is. The sensitivity is even higher. In the bidding document, there is even a requirement that the sensitivity is less than a certain value (such as -30 dB). This is wrong.
(Kanazawa's dual microphone digital noise reduction pickups, Model: A17-AUDIO)
The sensitivity is not related to the quality of the microphone. The common microphone microphone has three kinds of moving coils, pure capacitors and electret capacitors. Dynamic and pure condenser microphones have no amplification circuit. The sensitivity reflects the performance of the microphone microphone to some extent, and the sensitivity and performance are good. Electret condenser microphone microphone head is a capacitive type, internal FET signal amplifier circuit, its sensitivity is not related to the performance is good or bad, just a product specification parameters, sensitivity error accuracy (consistency) than the absolute value more important.
Monitored microphones generally use electret condenser microphones and microphones to increase gain amplifiers. When the sensitivity of pickups is defined, the two are viewed as a whole. The sensitivity of the microphone microphone and the gain of the microphone determine the sensitivity of the pickup. The pickup sensitivity is also just a specification parameter, and it is relatively more important that the error is small and consistent.
Changing the pickup's sensitivity is extremely simple, usually by simply changing the resistance of a resistor. This sensitivity based on the amplifier gain has nothing to do with the quality of the pickup.
Sensitivity can not be too high, a wide range of adjustments only when the sensitivity of the pickup and the system match, not too high nor too low. The sensitivity of the pickup is too low, the amplitude of the output signal is small, and the transmission is susceptible to interference. After entering the back-end equipment, the relative signal noise of the equipment is low, and the digital SNR is also low. Even if high-gain active speaker amplification is used during synchronous monitoring and playback, the signal-to-noise ratio cannot be improved and the pickup effect is not good. The sensitivity of the pickup is too high, and the output signal amplitude is too high to cause saturation distortion. The top and bottom of the sound signal are cut off.
The sensitivity of the pickup depends on the interface requirements of the back-end device. The rear-end connection devices of the pickups include hard disk video recorders, acquisition cards, encoders, network video servers, network cameras, computer sound cards, active speakers, mixers, optical transceivers, and audio arrays. The input signal level range required by these devices is very different. The only way to solve the problem is to adjust the sensitivity of the pickup. The wider the sensitivity adjustment range, the better the ability to adapt to different devices.
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