How to solve the echo of the chamber performance sound [Sonic Electronic Sound Jazz]
In many large-scale stage performances, what really shocked us was not the grandeur of the scene, but the rendering power of the scene, and the effect played by the stage sound was indispensable. Compared with the outdoor open space, when placing various types of audio indoors, in order to achieve better sound quality effects, we must not only reasonably place different types of audio, but also learn to do some simple acoustic disposal.
In many large-scale stage performances, what really shocked us was not the grandeur of the scene, and the rendering power of the scene, and the effect of the sound was indispensable. Compared with the outdoor open space, when placing various types of audio indoors, in order to achieve better sound quality effects, we must not only reasonably place different types of audio, but also learn to do some simple acoustic disposal. Here are a few effective ways to reduce the phenomenon of indoor audio echo:
1. Lay out a thick carpet. The reflection of sound waves on the ground is the most severe. Although carpets are less effective at low frequencies, the first thing to do is to try to absorb some of the high-frequency reflections. Early reflections formed in the first 5 mS (milliseconds) or a few milliseconds after the direct sound will become part of the direct sound, and because they are mostly from the same direction, they will be heard. It should be prevented that the sounding sound is innocent and mixed with high-frequency sounds that emit some reflections from the ground. And because it is unlikely to add some soft cushions to the ceiling, if the carpet is not laid on the ground, there will be two parallel and strongly reflective surfaces, and the sound waves will be reflected back and forth between the ground and the ceiling, thus making the sound unpleasant.
2, hanging window cloth on the window in some concert halls, always prevent the installation of reflective glass. In the listening room, because the walls are so close together, the reflection sound generated by the glass is very simple and annoying. You can try to hang some window cloth on the window that you can pull open, and pull on the window cloth when listening to music. Otherwise, don't place bookcases and furniture with glass front panels in the listening room.
3. Try to destroy the reflection of parallel walls. Parallel walls, like the floor and ceiling, have the potential to produce endless reflections, resulting in "multiple echoes" that make the sound unpleasant. You can clap your hands vigorously, and if you hear an echo, it means that there is something wrong in the auditorium. Bookshelves, especially bookshelves that are randomly placed in a mess, as a disperser of sound waves, can cut off the reflection of those parallel surfaces, although there are already a number of specially made sound dispersion screens for sale, but in the listening room to place a few bookshelves can play a very good effect.
4. Paste some foam on the "mirror reflection point" of the tweeter. Unless the ceiling of the listening room is as tall as a church, some foam should be pasted on the "mirror reflection point" of each tweeter of the speaker. The so-called "mirror reflection point" refers to the point where when a mirror is placed at a point on the ceiling (or on the ground), the tweeter in the mirror can be seen from the listening position. Although the disposal of the ceiling does not have to be as strict as the disposal of the floor, it is still advantageous to be able to dispose of it appropriately. When the mirror reflection points of the ceiling are applied to the foam that is not more than a few millimeters thick and does not exceed 0.1 m2, the indoor listening environment has been improved.
5, can not let the reverberation is too long. Pasting small foam blocks on the mirror reflection points does not make too many changes in the listening room. However, if you paste a large piece of foam or hang a fairly thick window cloth, it will make the replayed music sound dead because of too much sound. Thin, lightweight sound-absorbing materials will absorb high frequencies well, but they will not work well for low frequencies. Usually, the thickness of the sound-absorbing material is roughly equivalent to half the wavelength of the sound wave, which will have the effect of sound absorption. For 10 kHz sound waves, the wavelength is only 3.4 cm, so foam with a thickness of several centimeters can absorb high frequencies.
Sonto Electronics is a professional set of audio equipment research and development, manufacturing, sales, technical services in one of the enterprises, SoundTronics is a professional production of audio processor manufacturers. "Sound Jazz EAJAX" is one of the brands of Guangzhou Shengtuo Electronics Co., Ltd. In 2014, the company acquired the sound jazz audio electronics factory founded in 2005, the main production of dante speakers / engineering speakers / conference speaker systems and other speaker products, strong combination, coupled with more than 10 years of professional audio technology research and development and manufacturing experience in the field of electroacoustics, and "domestic products when self-reliant" product quality strategy, the formation of "sound jazz EAJAX" brand products from technology research and development, design, manufacturing to the user use of the whole process of high quality, high requirements of the positioning and standards.
