What kind of concept is "sound field"?
In the United States, the birthplace of fever music, there are two words related to the sound field, one is "Sound Field" and the other is "Sound Stage". "Sound Stage" mainly refers to the arrangement position and shape of the band on the stage, including length, width and height. It is a concept of three-dimensional space, and the "sound field" we refer to is actually "Sound Stage" because if " The Sound Stage "literally translated into a "stage of sound" or "sound stage" really does not make people feel good. As for "Sound Field", it actually corresponds to the "space sense" we introduced earlier. Therefore, when we refer to the "shape of the sound field", it actually refers to the shape of the band regenerated by your equipment. Due to the uneven distribution of the frequency response curve and the directivity of the speaker (such as the width of the room is greater than the depth or the depth is greater than the width), the sound field broadcast by the sound is actually more or less different from the original recording. . Some sound field shapes are originally square and have no arches. The different shapes of this soundstage stage certainly cannot be matched as they were when recording. There is a noteworthy problem: when playing live, the arrangement of the band is wider than the depth; but in the studio, in order to produce the sound effect, the arrangement of the orchestra tends to change, usually the depth will be elongated, especially the percussion instrument. Will be put a little further. This is not the arrangement we have seen in the concert hall. "Location of the sound field" Stainless Steel Grinding Rod, 304 Stainless Steel Round Bar, Stainless Steel Flat Bar, Stainless Steel Threaded Rod ShenZhen Haofa Metal Precision Parts Technology Co., Ltd. , https://www.haofametal.com
The position of the sound field should include the front, back, high, and low of the sound field. Some equipment that is mismatched will make the whole sound field sound like floating in the air; some sound like it is sitting on the second floor of the concert hall to watch the stage. There are many reasons for the position of the sound field, such as the position of the speaker and the uneven frequency response. What should an ideal sound field position be? We can experience it by listening to a symphony orchestra. When the symphony orchestra plays, the sound of the double bass and the cello should be emitted from a lower position. The position of the violin is slightly higher than that of the double bass and the cello. When recording, the orchestra should be low and high, like a brass instrument. Most likely in a higher position. For the height of the entire sound field, we can use the following method to determine that the sound field height should be slightly lower than the height of the two eyes when you are sitting. In other words, the violin should be above sight, and the cello and double bass should be below sight. The copper tube must be at least as high or higher as the violin. So where are the front and back positions of the sound field? Senior enthusiasts know that they should pull a straight line on the front panel of the speaker and extend it a distance. Of course, this optimal sound field position is not achievable because it has a lot to do with your audio mix, the listening environment and the software being played. In general, it is easier to extend from the front panel of the speaker, but it cannot be "retracted" too much. If there are too many backlashes, as some enthusiasts say, "straight against the street" is not right.
"Width of sound field"
Sometimes we can often hear the fans boast: "My sound field is not just beyond the speaker, it can even break through the wall." This sentence is heard by the layman, it is simply a fantasy. For experienced friends, there is only a little exaggeration. Usually, in the performance of popular music, you can occasionally hear a musical instrument ringing outside the speaker; in classical music, you often feel that the width of the orchestra has exceeded the width between the two speakers, which is beyond the speaker, Wide to the side wall. Many enthusiasts have this experience and don't have to worry about it. As for breaking the wall, I am afraid it will depend on a little imagination. At least, the sound field position that can be seen with the imaginary eye is the real sound field. We can't see anything outside the wall. It's hard to be sure that it is there. Therefore, the width of the sound field is actually only within the wall. This feeling you can fully understand from the first 1812 overture. If you hear the 1812 overture, the sound is tightened in the middle of the two speakers without exceeding the sides of the speaker, then you should ask a knowledgeable enthusiast to diagnose your sound and see if there is something wrong with it. .
"The depth of the sound field"
"The depth of the sound field" is what we often say "depth sense". "Deep sense" is different from "level sense" and "position sense" because the level and positioning have little to do with the sound field, but the sense of depth still belongs to The range of the sound field. Like the "width of the sound field", many people will say that the depth of the sound field of his home has already broken through the wall and reached the street. This is of course only a self-satisfied adjective. The true "field depth" refers to the distance between the foremost instrument in the sound field and the last line instrument. In other words, it is most likely the distance between the violin and the bass drum and timpani. "Wide to the next, deeper than the street" This should be included in the "space sense", this issue is waiting for us to discuss in the future. Some equipment or environments have too many low-frequency or low-frequency frequencies, so the position of the drum and the tweeter will be higher. At this time, the depth of the sound field is of course poor. Conversely, some sound fields are retracted, and the result is mistaken for the depth of the sound field. In fact, it is wrong. I don't think you have ever seen a band that will be arranged in a vertical bar. You just need to grasp the concept of "the distance between the violin and the timpani and the drum", you will be able to accurately say the depth of the sound field.