The Frequency Response Range Of The Acoustic Amplification System In Video Conference

- Sep 06, 2018-

The frequency response range is also the range of frequency response we often say, also called frequency characteristics. The frequency response refers to the range of frequencies that the sound system can reproduce within the range allowed by the amplitude, and the amount of change in the signal within this range is called the frequency response. The range of human ear hearing can reach about 20Hz-20kHz. The ratio of the maximum value to the minimum value of the output voltage amplitude over the rated frequency range is expressed in decibels (dB). The frequency response of a normal power amplifier is about (+/-) l-3dB from 20Hz to 20,000Hz; the frequency response of a high-quality power amplifier is about +/- 0.1dB from 20Hz to 20kHz.

From an acoustic point of view, sound exists and propagates in the form of waves. The wave is oscillating, and the unit of the wave is Hz (the number of oscillations per second), so this becomes a unit of sound. The smaller the Hz value of the sound wave, the louder the sound, and the larger the Hz value, the smaller the sound. From the structure of the human ear, the sound of 20,000 Hz is theoretically the lightest (but rarely in real life), while some animals can raise the sound of higher Hz, such as animals can hear 50000 Hz, even higher.

When designing the sound reinforcement system in the conference room, if you can make full consideration of the overall environment according to the characteristics of the venue, you will design a more perfect video conference effect for the customer.



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