喇叭声音与尺寸大小的关系（The relationship with the size of the horn sound）.docVIP

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喇叭声音与尺寸大小的关系（The relationship with the size of the horn sound）.doc

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喇叭声音与尺寸大小的关系（The relationship with the size of the horn sound）

喇叭声音与尺寸大小的关系（The relationship with the size of the horn sound） If you want to have big sound pressure, you need to push more air molecules in more energy per unit time, In the two dimension, the area of the diaphragm for the 15mm horn is about 7.5*7.5*3.14=176mm square, The 20mm is (10*10*3.14=314mm Square), 20mm in diameter, although the horn is only 5mm / 25% larger in size, But the surface area of the diaphragm is 78% larger than when we give the two speakers the same power, The size of the sounds you hear will be very different, because the 20mm speakers can be at the same time, Push more air molecules And the bigger the size, the lower frequency response is usually good, and the sounds the human ear feels are better, Of course, we can also give the trumpet more power, so that it produces higher sound pressure, but is limited to Bearing capacity of 1. diaphragm, 2. heat dissipation capability of loudspeaker, 3. changes in frequency response characteristics after power amplification (the diaphragm needs thickening and the coil becomes heavy... ). Therefore, we have to improve the structure of the material, the horn, as far as possible to small speakers, big sound, But if the size permits, change the trumpet number one, you can immediately improve the voice problem. Factors that affect the size of sound Diaphragm area, amplitude, magnetic field strength, power, impedance, sound cavity size, diaphragm pattern / thickness, opening. Power VS. volume under the same conditions, power increases, does not mean that the volume will increase synchronously. Because of changes in diaphragm and voice coil, at the same input signal, sometimes the volume will be smaller. Size VS. the bigger the volume, the more air it can vibrate at the same time, so the volume will be bigger. The thicker the horn, it usually means that there is a larger amplitude, and the sound will be bigger. Sound quality small speakers basically do not discuss the sound quality, but try to make the volume h