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Showing posts from February, 2021

Structure and Sound Pressure of BGM System Speaker

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  Basic structure The basic structure of BGM system speaker , from input to output, is as follows: 1. Source equipment (microphone, CD, cassette tape, cable, etc.) 2. Mixer (preamplifier) 3. Signal Processing Equipment (Equalizer, Compressor, Limiter, etc.) 4. Power amplifier 5. BGM system loudspeaker   When designing the system, we usually choose the speaker which is suitable for the interior decoration or design. Loudspeaker is an important factor to determine the specifications of power amplifier and signal processing system. It has a rich variety and knowledgeable selection. Here we focus on the selection of speakers to illustrate the design techniques of BGM system.   Sound pressure in BGM system speakers When people hear more than two kinds of voices, if one of them increases, they will be unable to hear its voice (this phenomenon is called masking). Therefore, BGM is generally about 3dB larger than background noise level  ( Usually about 6dB is used for amplif...

Usage of BGM System Speaker

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  Background music is abbreviated as BGM, which is the abbreviation of Back Ground Music. The main function of the loudspeaker of BGM system is to cover up noise and create a relaxed and harmonious atmosphere. If the listener does not listen attentively, he can not distinguish the location of the sound source. The volume of the loudspeaker is small. It is a kind of music that can create a relaxed and pleasant atmosphere.   Therefore, the function of speakers in BGM system speaker  is to conceal environmental noise psychologically and to create an atmosphere suitable for indoor environment. It is widely used in hotels, restaurants, shopping malls, hospitals, office buildings and so on. Music should be lyric or relaxed, and intense music is inappropriate.   Background music is not stereo, but monophonic. This is because stereo requires the ability to distinguish the direction of the sound source and have a sense of depth. Background music, however, does not know where ...

Functions and Places of Use of BMG Sound System

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  Background music is abbreviated as BGM. Its main function is to conceal noise and create a relaxed and harmonious atmosphere. If the listener does not listen attentively, he can not identify the sound source location. The volume is small. It is a kind of music that creates a relaxed and happy environment atmosphere.   Therefore, there are two functions of the BMG sound system in modern public and specific business places. One is to create an atmosphere suitable for the business environment so that consumers can stay happily and produce consumption. The other is to conceal the environmental noise psychologically, which is more suitable for leisure and entertainment.   The BMG sound system  can usually be combined with the emergency public broadcasting function, and its object is BGM. For example, theme parks, star hotels, casinos, scenic gardens, Airport stations, large shopping malls, etc. are served by BMG sound system. Decentralized high-quality speakers are inst...

Family Background Music System

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  The family BMG sound system  is also called the family central sound system. Through professional wiring, the sound source signal is connected to each room and any place where background music system is needed (including bathroom, kitchen and balcony).   Through the corresponding control panel of each room, the background music speaker is controlled independently in the room, so that each room can hear wonderful background music. Generally speaking, a BMG sound system can be installed in any room, including living room, bedroom, kitchen or toilet. It connects to the system through one or more sound sources, so that each room can hear wonderful background music. Of course, if there are rooms that don't want to listen, it's OK, because each room has a separate control panel, which can control the switch of the room independently, and can also adjust the volume and bass effect.   Household BMG sound systems, in short, can be installed in any room, including the living...

What is IE529 Standard? Why Is It so Important for BMG Sound Systems?

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  In high-end hotels, casinos, theme parks and restaurants, there are large spaces and high-rise buildings. If ordinary radio speakers are used, the power is often only a few watts, which can not completely cover up the environmental noise. We can't choose inferior background speakers, and we can't make investors lose because of small mistakes. For background music speakers in theme parks or scenic spots, it is recommended that RH-AUDIO BMG sound system  be installed on the lamp pole. RH-AUDIO BMG sound system is the speaker that has really succeeded in achieving the harsh all-weather standard IEC529.   What is IE529 standard? Why is it so important to high-standard background music speakers?   Popularization of Science: IEC529 Standard   IEC is the International Electrotechnical Commission and the International Electrotechnical Standards Agency.   The organization belongs to the ISO branch of the International Organization for Standardization. IEC529 is on...

Cautions for IC Heat Dissipation of Class d Pa Amplifier

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  Class d Pa amplifier has higher efficiency and better thermal performance than Class AB loudspeakers. Nevertheless, the heat dissipation of class D amplifier still needs careful consideration. The thermal performance of Class d Pa amplifier illustrates the principles that should be followed in good design by several common examples. Continuous sinusoidal wave and music are often used as signal sources when evaluating the performance of Class d Pa amplifier  in the laboratory. Although it is convenient to use sinusoidal wave for measurement, such measurement results are the thermal load of the amplifier in the worst case. If the Class d Pa amplifier is driven by a continuous sine wave near the maximum output power, the amplifier will often enter a thermal shutdown state. Speaker performance - Compared with class G boost power supply commonly used in smart amplifiers, the integrated Class H 11-volt DC-DC boost converter can improve power supply voltage and maintain higher effi...