Some common "fans" about sound quality evaluation are summarized below, and their technical meanings are briefly described.

    1. The sound has moisture: the medium and high frequency reverberation is sufficient, the frequency response is wide and uniform, the sound comes out, and there is a certain loudness and brightness. The distortion is small, and the ratio of reverb sound to direct sound is appropriate. Hearing is not dry, round, and watery.

Negative sound quality evaluation term: sound dry, dry.

    2. The sound is soft: the frequency band is widened in the low frequency band, and the low frequency and low frequency are also obtained. The high frequency band has no peak and the high frequency band decreases. The reverberation is appropriate, the distortion is small, the damping is good, and the hearing feels soft and comfortable.

 Sound quality evaluation term with opposite meaning: sound is hard.

    3. The sound is bright: the low frequency and medium frequency components are moderate in the whole range, the high frequency band is sufficient, and there is a rich decay process in the harmonic sound. The reverberation is appropriate, the distortion is small, the transient response is good, and the hearing is clear and active.

Sound quality evaluation term with opposite meaning: sound paste, gray.

    4. Thick sound: low frequency and medium and low frequency, strong sense, especially 200~500Hz sound, high frequency components, sound energy average level is higher, reverberation is appropriate, distortion is small, sound is thick and powerful.

The opposite sound quality evaluation term: thin.

    5. The sound is clear (clear): the frequency response is wide and uniform, the harmonic distortion and intermodulation distortion of the whole frequency band are small, the reverberation is moderate, the transient response is good, the middle and low frequency bands are moderate, and the high frequency band has no noise and distortion, and can be produced. The language is understandable, the bands are well-defined, and the sound has a clear bottom.

The opposite meaning of sound quality evaluation term: fuzzy, chaotic.

    6. The sound has strength: the medium and low frequency bands have sufficient volume, the high frequency components are not lacking, the reverberation is sufficient, the distortion is small, and the sound is solid and powerful.

Negative sound quality evaluation term: insufficient strength, powerless.

    7. Sound sound: The average energy level of sound energy in the middle and low frequency bands is large, the high frequency and medium frequency are not lacking, the proportion of direct sound is large, the sound of reverberation is moderate, the loudness is high, the distortion is small, and the sound is thick and bright.

Sound quality evaluation term with opposite meaning: sound is empty.

    8. Sound wood: low frequency and medium and high frequency lack, low frequency and medium and low frequency components, but the sense of quantity is insufficient, the reverberation time is short, it does not sound active, dull.

    9. The sound shrinks: the sound energy density is small, the sound can't be sent out; the middle sound is lacking, the reverb sound is less, the sound is low, the sharpness is poor, and the sound is not full.

    10. The sound is crisp: the medium and high frequency and high frequency components are too much, the low frequency components are insufficient, the frequency band of the whole frequency band is not uniform, the distortion is large, and the sound is thin and not thick.

    11. The sound is sharp: the low-frequency sense is insufficient, the medium-high frequency band (2kHz~6kHz) is too much, the frequency response is unevenly distributed, the distortion is large, and the hearing is harsh.

    12. The sound is boring: the low frequency is too strong, especially at 150 Hz, and the low frequency band has large distortion, the transient response is not good, the high frequency and medium high frequency components are lacking, and the attenuation is severely above 3 kHz to 4 kHz, and the high frequency reverberation is insufficient.

    13. The sound is floating: the average energy level of the sound energy is small, the loudness is low, the middle sound is lacking, the direct sound is not enough, and the indirect sound is too much, causing the sound focus to be unreal, and the sound image is imaginary and fluttering.

    14. Sound explosion: The sound energy density is too large, the high frequency and medium and high frequency components are too much, and there is noise in the high frequency band, and there is overload clipping distortion.

    15. Sound breaks (劈): The density of sound energy is too high, serious harmonic distortion and intermodulation distortion and overload cracking distortion will produce a broken feeling, and severely accompanied by a "squeaky" noise.

    16. Sound sanding: The passband distortion is large, there are additional higher harmonics, accompanied by transient distortion, and the sound is hoarse.

    17. Sound hairiness: There are too many medium and high frequency components in the high frequency, and there are noise and distortion in this frequency band. There are high frequency additional sounds in the hearing, and the sound is rough and not clean. 18. The sound is divergent: the sound is not strong, the focus is imaginary, the main melody is not prominent, the reverberation is too large, the intermediate frequency is lacking, the frequency response is uneven, and the sound is messy and scattered.

    19. The sound is fierce: the low-frequency IF is exaggerated, there is resonance, the frequency response is not uniform, and the mixed committee is too long. For example, if the reverb is used improperly, there will be a kind of awkward “bathroom effect”. Awkward feelings affect the clarity.

    20. Copper sound (or metal sound): a certain section of the middle and high frequency is prominent or at the resonance peak, the frequency response is uneven, the distortion is large, the yin is too negative, and the transient response is not good. A poor quality dynamic microphone or tweeter often feels hard in hearing and is accompanied by a copper sound, commonly known as metal sound.