在实际运用中，济南音响的频率范围与频率响应一直是备受关注的问题，然而因为涉及到专业细分知识，不少人对频率范围和频率响应的理解比较片面。频率范围和频率响应有什么区别？是不是频率越高音响效果越好？
In practice, the frequency range and the frequency response of the Ji'nan sound has always been a problem of concern, however, because it involves the specialization of knowledge, many people on the frequency range and frequency response of understanding one-sided. Frequency range and frequency response what is the difference? It is not better for higher frequency sound effects?
频率范围与频率响应的定义
Defines the frequency range and frequency response
频率范围是指济南音响系统能够重放的最低有效回放频率与最高有效回放频率之间的范围；频率响应是指将一个以恒电压输出的音频信号与系统相连接时，音箱产生的声压随频率的变化而发生增大或衰减、相位随频率而发生变化的现象，这种声压和相位与频率的相关联的变化关系(变化量)称为频率响应，单位分贝(Db)。
The frequency range refers to the range between the lowest effective playback frequency sound system capable of reproducing and highest efficient playback frequency; frequency response refers to a connected with constant voltage output audio signal and system, the speaker produces sound pressure and increased with frequency or attenuation, phase change phenomena with the change of frequency the phase and frequency, sound pressure and associated changes in the relationship between (variation) called frequency response, unit dB (Db).
济南音响系统频率的判别
Identification of Ji'nan sound system frequency
济南音响系统的频率特性常用分贝刻度的纵坐标表示功率和用对数刻度的横坐标表示频率的频率响应曲线来描述。当声音功率比正常功率低3dB时，这个功率点称为频率响应的高频截止点和低频截止点。高频截止点与低频截止点之间的频率，即为该设备的频率响应；声压与相位滞后随频率变化的曲线分别叫作“幅频特性”和“相频特性”，合称“频率特性”。这是考察音箱性能优劣的一个重要指标，它与音箱的性能和价位有着直接的关系，其分贝值越小说明音箱的频响曲线越平坦、失真越小、性能越高。如：一音箱频响为60Hz～18kHz＋/－3dB。这两个概念有时并不区分，就叫作频响。
The ordinate common decibel scale frequency characteristics of sound system in Ji'nan said the power with the abscissa and logarithmic scale representation of the frequency response curve to describe. When the sound power than normal low power 3dB, the power point known as the high frequency response of the cutoff point and low frequency cutoff. High frequency cut-off and low frequency cutoff frequency between the response, i.e. for the equipment of frequency; hysteresis curve with variation of frequency and phase are called "the sound pressure amplitude frequency characteristics" and "phase frequency characteristic", referred to as the "frequency characteristic". This is an important index to evaluate the performance of the speaker, and it has a direct relationship with the speaker of the performance and price, the decibel frequency response curve of the smaller the speaker more flat, distortion is smaller, the higher the performance. Such as: a loudspeaker frequency response of 60Hz ~ 18kHz/3dB. These two concepts are sometimes not distinguish, is called frequency response.
济南音响 http://www.jnzqyx.com/频率多高比较合适？
Ji'nan audio sound frequency high more appropriate?
从理论上讲，20～20000Hz的频率响应足够了。低于20Hz的声音，虽听不到但人的其它感觉器官却能觉察，也就是能感觉到所谓的低音力度，因此为了完美地播放各种乐器和语言信号，放大器要实现高保真目标，才能将音调的各次谐波均重放出来。所以应将放大器的频带扩展，下限延伸到20Hz以下，上限应提高到20000Hz以上。对于信号源(收音头、录音座和激光唱机等)频率响应的表示方法有所不同。例如欧洲广播联盟规定的调频立体声广播的频率响应为40～15000Hz时十／—2dB，国际电工委员会对录音座规定的频率响应最低指标：40～12500Hz时十／—2．5十／—4．5dB(普通带)，实际能达到的指标都明显高于此数值。CD机的频率响应上限为20000Hz，低频端可做到很低，只有几个赫兹，这是CD机放音质量好的原因之一。
Theoretically speaking, 20 ~ 20000Hz frequency response is enough. Below the 20Hz voice, although not to hear but other people's sensory organs are able to perceive, is also can feel the so-called bass strength, so in order to perfect to play all kinds of instruments and the language signal, amplifier to achieve high fidelity to the target, each harmonic tones are reproduced. So should be extended frequency band of amplifier, the lower bound extends to below 20Hz, the upper limit should be increased to more than 20000Hz. The signal source (receiver, recorder and CD player) frequency response of different representation method. For example, FM stereo radio regulations of the European Broadcasting Union of the frequency response is 40 ~ 15000Hz / ten - 2dB, the International Electrotechnical Commission on the frequency response of the recording base stipulated minimum index: 40 ~ 12500Hz ten / - 2.5 / - ten 4.5dB (ordinary belt), the actual can achieve the targets are significantly higher than this value. CD frequency response limit is 20000Hz, the low frequency end can be very low, only a few hertz, which is one of the reasons for CD playback quality good.
频率范围越宽，音响效果越好？
The frequency range is wide, the sound effect is better?
构成声音的谐波成分是非常复杂的，并非频率范围越宽声音就好听，不过这对于中低档的多媒体音箱来讲还是基本正确的。在标注频率响应中我们通常都会看到有“系统频响”和“放大器频响”这两个名词，要知道“系统频响”总是要比“放大器频响”的范围小，所以只标注“放大器频响”则没有任何意义，这只是用来蒙骗一些不知情的消费者的。现在的音箱厂家对系统频响普遍标注的范围过大，高频部分差的还不是很多，但在低音端标注的极为不真实，国外的名牌HiFi(高保真)音箱也不过标注4、50Hz左右，而国内两三百的木质普通音箱居然也敢标注这个数据，真是让人笑掉大牙了！所以敬告大家低频段声音一定要耳听为真，不要轻易相信宣传单上的数值。济南音响中的音乐是以播放MP3或CD的音乐、歌曲、游戏的音效、背景音乐以及影片中的人声与环境音效为主的，这些声音是以中高音为多，所以在挑选多媒体音箱时应该更看中它在中高频段声音的表现能力，而不是低频段。若真的追求影院效果，那么一只够劲的低音炮绝对能够满足你的需求。
A harmonic components of the sound is very complex, not the frequency range is wide sound nice, but that for multimedia speakers in the low - is still the basic right. In the annotation in the frequency response we usually see "system response" and "amplifier response" the two terms, to know the "frequency response" is always better than the "range of amplifier frequency response" of small, so only marked "amplifier response" no significance, this is only used to deceive some consumers. The range of sound box manufacturers now on system response generally marked difference is too large, the high frequency part is not many, but the annotation in the bass end very unreal, foreign brand HiFi (high fidelity) speakers but also marked 4, about 50Hz, and the common sound box two hundred or three hundred of the domestic wood dare to label the data, it is to make people laugh! So informs everybody low-frequency voice must be heard really, do not easily believe that the promotion value on the list. Ji'nan sound in music is vocal and environmental sound play MP3 or CD music, songs, games, background music and sound in the film primarily, these sounds are in the treble as much, so it should be more use value in high frequency sound performance ability in the selection of the multimedia speaker, rather than low frequency section. If really pursue theater effect, so a strong bass absolutely can meet your needs.