引起济南音响单元相位的偏移的因素
2014-10-8 11:45:20 点击：
（1）接线端反接会反相180度。同频率的音频信号从功放输出后，若一对音箱有一只接反相（即指“+”“-”两极接反），这对音箱的单元会产生交流相位差，音频信号相互抵消，扩声后的低频信号明显偏弱，声音变硬变干，中高频漂移，影响整个扩声系统的调试和整体声场效果。
(1) terminal reverse connection will be reversed 180 degrees. With the frequency of the audio signal from the amplifier output, if a speaker of a connected inverting (refers to the "+" "-" the poles reverse connection), the speaker of the unit generates the AC phase difference, audio signal offset each other, the weaker the low-frequency signal amplification after sound, hard and dry, in high frequency drift, affecting the entire sound reinforcement system debugging and the overall effect of sound field.
（2）济南音响喇叭安装方式为反装（即磁钢朝外）时，这种情况会反相180度。一阶分频是滞后90度，二阶分频是滞后180度，三阶分频是滞后270度……以此类推。
(2) Ji'nan speaker installation method for anti loaded (i.e. magnet outwards), this situation will be reversed 180 degrees. The first-order frequency is lag of 90 degrees, the two order frequency is lag of 180 degrees, the three order frequency is lag of 270 degrees...... And so on.
（3）喇叭灵敏度引起的高低音到达人耳的时间差不同，也会导致相位失真，这就是在同一个分频器里高低音的滤波器阶数常常不一致的原因。通常高音驱动头的灵敏度是远远超过低音单元的，所以我们会发现低音分频的元件很少，而高音部分则是比较多的电阻、电容和电感，就是利用滤波器阶数来平衡高低音喇叭之间的灵敏度，使高低音到达人耳的时间同步，同时其相位亦得到校正。
(3) horn sensitivity caused high bass to Master ear different time difference, also will cause the phase distortion, the reason is that in the same frequency divider in the filter order high bass often inconsistent. The sensitivity usually treble drive head is far more than the bass unit, so we will find the bass frequency of the rare element, a part is more resistance, capacitance and inductance, is the use of sensitivity between filter order number to balance high bass loudspeaker, the high bass to Master ear time synchronization, and also the phase to get the correct.
（4）在现场扩声系统中，通常有多只济南音响 http://www.jnzqyx.com/ 同时使用，如果使用不同牌子或不同型号的音箱，有可能出现相位差问题，所以实际工程调试时工程人员需要测量每个音箱的相位一致。 综上所述，专业音响工程的相位所产生相位差的原因是多种多样的，所以我们在做音响过程中应考虑到产品的选型，焊接工艺要求，系统连接方式，调试检测等问题。相位的问题是音响工程中所包含的一个很小部分，但是它有着举足轻重的作用。
(4) in the field of sound reinforcement system, usually only the number of Ji'nan sound at the same time, if the use of different brands or different types of speaker, might have problems with phase difference, so the actual project commissioning engineers need to measure each speaker phase. In summary, professional sound engineering phase generated by the phase difference is varied, so we do in the selection should be taken into account in the process of audio products, welding process requirement, the system connection, the problem debugging and testing etc.. The phase problem is a very small fraction contained in sound engineering, but it has play a decisive role role.
(1) terminal reverse connection will be reversed 180 degrees. With the frequency of the audio signal from the amplifier output, if a speaker of a connected inverting (refers to the "+" "-" the poles reverse connection), the speaker of the unit generates the AC phase difference, audio signal offset each other, the weaker the low-frequency signal amplification after sound, hard and dry, in high frequency drift, affecting the entire sound reinforcement system debugging and the overall effect of sound field.
（2）济南音响喇叭安装方式为反装（即磁钢朝外）时，这种情况会反相180度。一阶分频是滞后90度，二阶分频是滞后180度，三阶分频是滞后270度……以此类推。
(2) Ji'nan speaker installation method for anti loaded (i.e. magnet outwards), this situation will be reversed 180 degrees. The first-order frequency is lag of 90 degrees, the two order frequency is lag of 180 degrees, the three order frequency is lag of 270 degrees...... And so on.
（3）喇叭灵敏度引起的高低音到达人耳的时间差不同，也会导致相位失真，这就是在同一个分频器里高低音的滤波器阶数常常不一致的原因。通常高音驱动头的灵敏度是远远超过低音单元的，所以我们会发现低音分频的元件很少，而高音部分则是比较多的电阻、电容和电感，就是利用滤波器阶数来平衡高低音喇叭之间的灵敏度，使高低音到达人耳的时间同步，同时其相位亦得到校正。
(3) horn sensitivity caused high bass to Master ear different time difference, also will cause the phase distortion, the reason is that in the same frequency divider in the filter order high bass often inconsistent. The sensitivity usually treble drive head is far more than the bass unit, so we will find the bass frequency of the rare element, a part is more resistance, capacitance and inductance, is the use of sensitivity between filter order number to balance high bass loudspeaker, the high bass to Master ear time synchronization, and also the phase to get the correct.
（4）在现场扩声系统中，通常有多只济南音响 http://www.jnzqyx.com/ 同时使用，如果使用不同牌子或不同型号的音箱，有可能出现相位差问题，所以实际工程调试时工程人员需要测量每个音箱的相位一致。 综上所述，专业音响工程的相位所产生相位差的原因是多种多样的，所以我们在做音响过程中应考虑到产品的选型，焊接工艺要求，系统连接方式，调试检测等问题。相位的问题是音响工程中所包含的一个很小部分，但是它有着举足轻重的作用。
(4) in the field of sound reinforcement system, usually only the number of Ji'nan sound at the same time, if the use of different brands or different types of speaker, might have problems with phase difference, so the actual project commissioning engineers need to measure each speaker phase. In summary, professional sound engineering phase generated by the phase difference is varied, so we do in the selection should be taken into account in the process of audio products, welding process requirement, the system connection, the problem debugging and testing etc.. The phase problem is a very small fraction contained in sound engineering, but it has play a decisive role role.
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