Henan Puyang Wedding audio equipment sales company indoor sound field with a human ear, ears to the sound position, distance perception height 1393 +90664 +17 69139139 www.69139139.com Jiaming Yang Cheng * City Milan sun technology market, Building 5, Unit 2, 208 normal ears the sound of the sound field effect with perception and judgment. This includes physical and psychological double reflection. The first is a lateral positioning of the sound source (horizontal positioning) perception and judgment. For example, the low frequency sound source person left, and right location-aware, mainly depends on the intensity of the sound to reach the ears poor judgment; but who positioned a distance to the sound source (portrait orientation) is also perception and judgment. This is mainly relying on the direct sound and reflections in recent times the perception of sound and reverberant ratio to judge. For example, the direct sound strong, reflected sound and reverberant sound is weak, when a large proportion of the direct sound can be judged from the past; while the proportion of hours of direct sound, clarity significantly reduced, we can determine the distance. Again, the height of the sound localization of people (elevation positioning), also in a certain range judgment effect. Positioning is the use of high spectral difference hearing ears subconsciously judged. For example, since the elevation differences, i.e. the human ear perceive different frequency response characteristics curve of the front with the impression to hear the tone can be determined by comparing the angle of elevation. Audio equipment Monopoly Henan Puyang, Henan Puyang wedding wedding audio equipment Monopoly two performances, Haas (HAAS) effect and sound localization Haas is a German scientist who in 1930 published a "leading effect" of the article. Recognized by this theory can explain how people perceived sound source position. First, within 35ms, the brain due to inhibition of the human hearing can not determine the time difference. Therefore, the direct sound and early reflections, respectively, after reaching the ear, people can not perceive several discrete sounds, but only perceived as a sound. Because of this momentary harmony effect, direct sound and early reflections superimposed, people feel the sound has been strengthened, and the sound is clear. And when the time difference between two sounds than 35ms ~ 50ms, the situation is different. 3, the acoustic field characteristics and effects of various variables except silencer outdoors, all indoor listening environment, after the direct sound has four variables, the delay for a very short period of time, there have been one or a few early reflections, in After the early reflections is the reverberation time of entry, followed by intensive reflection reverberation lag, in a certain time (several seconds) after reverberant disappear. In order to simulate the natural sound field of the state, to be used in the production of artificial recording delay and reverb to generate these variables. Therefore, it is necessary to move the sound field in a variety of variable composition and role of the characteristics of a further introduction. Henan Puyang Wedding audio equipment Monopoly (1) the role of the direct sound Jiaming Yang 1393 +90664 +17 69139139 www.69139139.com Zheng * City Milan sun technology market, Building 5, Unit 2, 208 wedding Puyang, Henan Monopoly direct sound audio equipment sound is mainly determined clarity. It has a leading human auditory effect (Haas effect), the length of the direct sound propagation time of the same length and the sound source, its frequency response characteristics because there is no interference with the same frequency response characteristics of the sound source, the direct sound is to determine the sound source an important basis for the width of the sound source. (2) the role of latency audio equipment Monopoly Henan Puyang wedding delay between early reflections determine the length of time the density of early reflections, but also indoor sound field an important indicator of the size of the room. Decided early reflections delay the entry of a large room, the first reflected sound to come in late, the room is small, the first reflected sound will come early. Delay time is too long will cause echo, clarity of the sound field effect. (3) the role of early reflections audio equipment Monopoly Henan Puyang wedding early reflection sound source orientation is not the position, it depends on the reflective surface. The spectrum of the reflected sound absorption effect due to reflection R, the frequency response characteristic change. Reflected sound can pass spatial information, can give people a sense of distance Puyang wedding audio equipment monopoly. Early reflections become part of the sound source, you can make the sound softer sound source. (4) the role of the reverberation time of entry Jiaming Yang 1393 +90664 +17 69139139 www.69139139.com Zheng * City Milan sun technology market, Building 5, Unit 2, 208 audio equipment Monopoly Henan Puyang wedding reverberation time that spatial information into it control reverberant sound field to enter in the speed and the length of time the reverb into the reverberation time is proportional to the length. Reverb enter a long time, the reverberation time is long. Reverb into a short time, the reverberation time is short Kaifeng wedding audio equipment Monopoly