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Several tricks for KTV audio debugging

source:Industry News release time:2022-02-19 Hits:     Popular:Brand bar audio wholesale

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  KTV sound reinforcement must ensure several basic factors: sound pressure level, sound field uniformity, clarity, reverberation, and to understand some basic electronic acoustics knowledge of equipment.

  Sound pressure level: To put it simply, the power of the audio system should be sufficient, and the volume of the private room should be equipped with how much power. This is the first thing to guarantee. Generally, the best sound pressure range of speakers in KTV private rooms is between 2.5 and 2.8 meters. That is to say, it is better for you to keep the distance between the hanging position of the speakers and the sofa singing area near here. If you don’t believe me, you can test it and hold it. Move the microphone slowly from the sofa to the speaker position to see if singing is better at this distance.

  Sound field uniformity: The installation position of the speaker is very important. According to the horizontal and vertical diffusion angle of the speaker, the hanging position of the speaker is reasonably arranged, as well as the horizontal and vertical rotation and pitch angles to ensure a uniform sound field in the listening area.

  Clarity: Reasonable room design and layout, proper sound absorption and diffusion are a simple way to ensure the clarity of sound reinforcement. If the room uses a lot of glass, mirrors and parallel smooth walls, it is necessary to consider adding sound absorption and diffusion measures at appropriate locations. . The main method is repeated testing. If the room already has a lot of sound-absorbing materials and cannot be removed, you can refer to the frequency division design of the existing speakers to transform the speakers, such as increasing the number of tweeters, it is recommended to use a 2.5" tweeter to make up for the excessively absorbed tweeter. , to increase the clarity of the treble; too much low frequency will also affect the clarity of the room. If you try to attenuate a lot in the tone part, it will cause signal distortion, which is too much. There is a trick you can try: spray self-painting on the woofer unit, often It needs to be sprayed several times. Let’s analyze the specific situation in detail, so that the woofer paper cone changes its characteristics and is biased towards the mid-frequency. Hehe, try it again. The bass is also related to the installation position of the speaker. It is also necessary to adjust the speaker position to find a better balance point. a way.

  Reverberation: including built sound reverberation and electro-acoustic simulated reverberation, built sound reverberation from a mature decoration designer, fully considering the architectural acoustic characteristics in small spaces, considering the reflection, diffusion, absorption and other indicators of sound , such as furniture arrangement, wall modeling design, wallpaper selection, sofa material and other factors, as debugging we can mainly control electroacoustic reverberation, traditional karaoke amplifiers can only simply use ECHO (echo) to simulate real reverberation , the effect is poor, and the earlier echo processing chips: M50195, 65831, etc., the frequency response range is too narrow, and the effect is poor. Now the mainstream karaoke power amplifiers all use DSP effect processing, and the frequency response range can reach 24K, which can fully meet the requirements. .


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