The ideal T60 is based on the difference between the theater and the natural recording studio. The Symphony Hall T60 is generally 2.0, and the bass is increased by 10%.
The opera house is generally 1.8, mainly listening to the new music hall of the lyrics. The T60 is shorter than the old one, and the north is shorter than the south. Because the southerners don't like to hear too clear sounds. The natural recording studio T60 is about 1.3, which is better than the concert hall. The sound is much clearer, the small room decoration T60, technically can not reach 0.6 or more, because the sound absorption is insufficient, causing serious frequency imbalance. Why the small room spread is useless, but it causes imbalance, the sound is weird. Because the bass should spread Up to a few meters, the family can not be renovated. So the bass only sounds. If the high frequency spreads too much, the T60 will increase, causing the high frequency T60 to be greater than the low frequency T60, just the opposite of the low frequency T60 of the Symphony Hall is higher than the high frequency T60.
The basic idea of ​​the design of the fever listening room is to bring the acoustic conditions of the recording and the room to the state of the concert hall as much as possible. However, in the case of a small room, the state of the concert hall is never reached, and it can only be as close as possible.
First, briefly explain several technical terms of common design. 1, frequency response, the general music hall design requirements range is 125Hz-4KHz, beyond this range does not require. Our room is generally 40-70Hz, but the multiplier reaches several hundred Hz, which affects people's hearing. 2, T60, refers to reverberation, a sound is pronounced to -60dB time. 3, delay , refers to the time when the pronunciation is reflected back.
Generally, a house with a home size of less than 100 cubic meters cannot reach the balance of the bass by diffusion. Generally speaking, it is necessary to diffuse the low frequency, at least a quarter of the wavelength, 50 Hz standing wave, and a diffusion plate with a tooth length of 1.7 meters is not available at home. Renovation. If you want to play a big role, you need one-half of the wavelength, then you can't handle it. So the low-frequency can only rely on sound absorption to solve the flatness of the frequency response. Generally, the house of 100 cubic meters reaches plus or minus 2dB. T60 is generally lower than 0.55. According to the characteristics of the concert hall, the high frequency T60 can't be higher than the low frequency. Welcome to the home theater network shopping guide
Diffusion and absorption are a pair of contradictions. The diffusion increases T60, that is, the resolution is reduced, and the absorption is reduced by T60. If the medium and high frequency adopts excessive diffusion, the high frequency T60 is higher than the low frequency T60, and the generated sound is a strange. Sound, so in general, the high frequency does not use diffusion. If the low frequency T60 is much larger than the high frequency T60, then the ceiling can be increased by a part of the diffusion, or a small amount of diffusion on the first reflective surface of the wall.
The secondary cosine diffusion and other resonant diffusion plates on the market today can reduce the size of some diffuser plates, but this is an unnatural diffusion mode, which is unnatural to the sense of hearing. It is best to use cylindrical or triangular surface diffusion. Related to listening habits, the triangular face is better.
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