Special Topic on Mobile Phone Sound Cavity Design Regarding mobile phone sound cavity design, let\'s first talk about single speaker, which is the most used now! However, from the development trend, in pursuit of good sound effects, dual speakers will become a major theme in the future. Whether it is dual or single, the design of the rear sound cavity has a great impact on the sound quality: try to make it bigger and seal it better! The current trend is to require higher and higher volume, especially for domestic mobile phones, some of which can reach more than 100 decibels, but volume is not the only indicator, and harmonious and pleasant ringtones are the design goal! The influence of the sound source on the ringtone is very important, and choosing a suitable sound source can well reflect the design effect! Choosing a sound source 1. Try to use a speaker with a large caliber. 2. The characteristic curve of the speaker requires high sound pressure at low frequencies, and the curve should be stable in the range of 1K~10K. Of course, being able to achieve a good level below 1K reflects the speaker\'s R&D and production strength. The structural design is limited by the space of the mobile phone. Most designs use two-in-one single-sided sound. The final sound effect of the product is not very good. The design principles of the speaker and the receiver are different. Sharing the same sound cavity will indeed cause certain problems. Here are some suggestions: 1. Φ13mm Speaker front volume height: 0.3~1.0mm Sound hole height: Φ1.0, 4~8 holes (3mm2~6mm2) Rear volume height: 3~5Cm3 ……
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