【 Weak current College 】 how to evaluate the sound quality is good or bad---Power By 【 China power house network 】

Quality evaluation is one of the basic skills of enthusiasts. Subjective evaluation of hardware and software, is also the most reflects the level of the mark. fever Sound reflects the content tends to be clear, specific and objective, but the sound and the tone is very abstract, subjective and inconvenience. To improve the sound quality of the evaluation and felt the need to contract, inductive, sublimation. As the taste is established, all that sugar is sweet, so people have to eat sugar feeling known as the "sweet", then this is the kind of thing, even taste it is not a sugar we all said is sweet.

Quality evaluation of terminology, the rich also reveals the complex, you must grasp the main and essential to the specification, to facilitate our performance and Exchange.

1. clear and cloudy sound system sound to make people feel clear, frequency response to the wide, even, and especially in high density, reverberation, to better distinguish musical instrument sound and location, on the contrary it is called turbidity.

2. flexible and nervous mellow refers to distortion, particularly in high-frequency distortion minimal sound, this type of feeling happy, pleasant the sound. Bass not turbid, baritone not blunt, treble not thrust. Nervous and mellow relative, the main impression is sound rough, audible distortion. Voice if 5% of the distortion, most people are nervous feeling, professionals can listen to 3%.

3. full and dry sound thick, loudness, sense of good in high frequency content, reverb more foot, transient response well called plump, while as vapid.

4. bright and dim light means throughout the sound field within the high, mid, bass balance, treble, and slightly protruding is rich in harmonics, reverb, distortion. Gray is a serious lack of treble, bass, resolution is low.

5. wide and thin wide sound frequency response, treble, bass and a bright little sound often white lack bass or treble.

6. dry and wet mainly refers to the reverberation effect. Reverberation time is short, not enough to stem the depth. Reverberation, manifested in the wet. Voice of dry and wet sometimes is determined by the software, may also be caused by the listening environment.

7. scene are loud, proliferation, there are certain reverberation, especially within 800 ~ 5000Hz, most intensive sound close to concert hall, called presence.

8. balance frequency range, in particular the frequency of sound box of the modules without smoothing of convergence, the entire sound fusion Wi, wide, it sounds easy, pleasant, known as equilibrium.

9. cold and warm sense of cold and warm sense of sound larger individual differences. Cool voice distortion very small, very balanced, equipment with good physical indicators. And warm sound is lost in the sound balance, directly on the basis of smaller, more mellow with some, the fullness of personality. Generally use the transistor amplifier sounds rather cold, electron tube there are charming warm. Sounds cool and warmth were not preference bianyici, what kind of sound varies from person to person.

In the quality evaluation terminology, there are some very targeted words, such as clean that SNR high, music signal interference between small: sound, reflecting the sound is not fixed, the reverberation: fat sand that blink harmonic distortion exists; the stuffy, refers to the lack of treble: sharp, rough reflects the frequency response is not uniform, and so on.

Evaluation of sound quality feel, sometimes by the age and physical condition, mental state, listening environments, etc. Loudness, the people physically inherent factors should also be attached. Only sound pressure reached 90db, people with high, medium, low acoustics degrees on the feel is consistent, lower than the sound pressure, the human ear on the treble and bass are insensitive. To this end, a number of amplifiers are reinforced with a loudness circuit for the compensation of the ear. Of course, a qualitative assessment of Qi men black is best provided sound pressure.