Audio equipment.Conference room sound renovation plan

　　In other words, the amplifier's signal-to-noise ratio is high, the effective frequency ring is wide, and the distortion is bottomed. The effective frequency of the speakers should be wide, the frequency ringing curve should be flat, and the audio that can reach 20Hz--20kHz can be said to be very good. At present There are very few speakers that can reach 20Hz ---20kHz+3%DB. There are few sounds on the market that high frequency can reach 30 or even 40kHz, which shows that the quality of audio is constantly improving, but our normal people's ears It is difficult to distinguish the signals of more than 20kHz, so it is not necessary to pursue some ultra -high frequencies that we can't hear. Only the frequency wide curve is flat can the original sound be realized. To be proportional, if the area is too small and the power is too large, the sound pressure will cause too much reflex sound, making the sound turbid and unclear, otherwise the sound pressure is not enough. The power amplifier power is better than 20%to 50%when the speaker power is matched. The bass will be stronger and powerful, and the mid -tone level will be clearer. When the sound pressure is large, it is not easy to distort it.

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Composition of the stage broadcast audio system