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World almost nothing compared to mere auditory evaluation speakers more subjective. A bit of sound fans meal may become another audio fans of poisons. But for the experienced listener-this refers to those who have spent hundreds of hours in controlled conditions compare several speakers as well as those agreed that there should be a set of guidelines for people-who in methods and conclusions should have some basic points in common.
But that is not to say that we must insist on consistent. If you found the sweetest sound is the ball most powerful bass impact, that would be it! "to purchase favorite things" this straightforward advice, and never wrong, but if you agree with the "accurate" (accuracy) as speaker of the ideal quality, you will see the following knowledge contribute greatly to find an accurate speaker. Here the "accurate" is defined as the inevitable price and size constraints, possible broad frequency range reproduction of original sound recording voice timbre, dynamics and various aspects of the environment, climate, change the details of the less the better. Of course, this definition is a circuitous and indirect, because if you do not play with a speaker, and how you can know it the original sound is what you and I do not know the world famous painting "Mona Lisa" whether · somewhat like the old 16th century ladies live, but we believe that many · da Ang Lee · da Vinci the skillful painter, finds his painting is accurate, and artistic. Similarly, if we choose a card with the artistry of the record, we should assume that it replayed together can be almost as real as the original performance. Although recording device (such as a microphone) inherent quality sound with speakers will have differences, but several excellent recording between substantive quality differences should be far more than a fine and a mediocre speakers differences are much smaller.

Listen to duty

Nothing can replace the experience, so you should take every opportunity to listen and compare the speakers. Remember listening environment is vital, listening should always use good amplifier or receiver, and excellent audio source component to reduce the number of variable factors. But you can be sure that even if it is similar to the trumpet, listen to voice differences when found, far more than finding the differential amplifier and CD player.

If you use A/B comparison test device, it has a direct connection to two pair or two sets of speaker switch. Be careful when testing to compare the work achieved equilibrium, that is, two sets of test speaker volume remains within the 0.5 decibel difference (this can only be used for an accurate measurement of sound pressure table). This is a psychological fact: If a speaker's sensitivity is better than another, so the sound is a little loud, people would think of the speakers sound "good".

Another point you must know is: speaker position on the voices of the General Assembly was a surprise to people unexpected, so listen to what is necessary to compare a pair or a set of speakers swap position even when placed side by side or to Exchange, you will be able to listen to a position on the voices. But you should not rely solely on A/B comparison tests, but also to step over to (or per-group) listening to understand their sound characteristics.

Obviously listening material is very important. To select some demos available recordings, select the point is not in accordance with its music, which is based on its sound recording accurate, at the same time be able to display a particular aspect of sound quality. Select the record used for assessing the speakers with a variety of ways, I often recurrent use paragraphs familiar music so that I can pinpoint the sound of a critical test. (See the following appendix measuring sound recordings). This method has the advantage that you will soon be on the music of cooked to the extent that you do not use it as music to listen to, butrather focus on how accurate music reproduction.

Listen to the list of items

Whether you want to listen to the speaker of what sound characteristics? different experts may have a different answer, I offer the following points:

1. the timbre of uniform Unity (timbaluniformity)-I think this is first and foremost, it means that the broad frequency range from bass to treble tone uniform unity. In fact, the tone consistent is difficult to be judged as a whole, so I put it into four small areas:

A. people sound domain mellow (vocal-rangesmoothness)-this section is designed to listen to the voice (including singing and speaking) for medium-frequency part of the speaker tone of pollution-this is part of the general shortcomings of the speakers. The most common manifestations of "error" is the sound for different people are the same color. It represents a megaphone or nasal voice, or one through the closure of the Palm. I think this is the maximum can be heard. It distorts sound radically different vocalists such as JanisJoplin and GordoInghtfoot singing.

B. low frequency/low-frequency disturbances in-it is easier to recognize. The usual signs is sound buzz or shallow (an increase or decrease the tendency of certain tone), or a hollow sound (lower male performance too overbearing or weak).

C. lower the treble, the flexible nature-I usually use collective String Orchestra to test this. I listen to the voices of stringed instrument is the sharp is not normal or dry (no angry voices) or too sweet. This is a listener to the most stringent requirements, unless you have something to listen to the band's musical group live performances. Due to the halls of acoustic condition and the band's playing style is different, even the best string group, also sometimes appear rough and hard to stretch stretched voice. To listen often have rolling shrill voice or metal sound, while also takes note of the sound is too plump up sounds unnatural. To hear a few recordings, see this kind of bad quality whether the record itself.

D. top treble (tip-toptreble)--in most music almost nothing in theVoice over 13 kHz, if we really heard the sound of this frequency, that's just the "electro-optic Flash" instead of music. Listen to jazz or rock in the Percussion Cymbals is master the simple way of sound. Pop music to jazz and rock high-hatrides together, recording nature such record is an excellent test materials, it has clean, high-pitched repeated moment. You want to focus on listening to every moment of this moment the treble to see whether dark (lack of highest octaves), too sharp (too many most octave), and Fuzzy (something not clear, like Lisp-metallic sound, physical cymbal will not have this kind of sound).

2. audio positioning-here I am referring to the sense of space, the sound field, depth, and is used to describe the speakers how to create an authentic acoustic space environment of many terms. In General, most video is changing the speaker quality and certainly the most difficult to assess, it is because even the best sound regeneration is not quite like the original sound.