Now we don’t have to go to various large commercial theaters to watch movies, because customization, installation, and building of exclusive independent home private theaters have become the choice of most owners. Comfortable home viewing environment and shocking audio-visual effects have become the current trend. In the decoration of private theaters, spatial acoustic treatment is an important part that affects the effect in addition to the sound configuration, and it is also a part that is often overlooked and misunderstood.

home theatre

Misunderstanding 1 Ignore positioning, crazy decoration

Many audio professionals, after receiving customer needs and providing the room length and width, directly took the general standard speakers to place the map, buzzed and positioned them, and then installed and decorated them “extraordinarily efficient”. When I installed it, I found that the listening position was not in the position you designed. The original ‘very standard’ speaker positioning was completely wrong in an instant. The result is that it is embarrassing to accept imperfect positioning, or it is frustrating to rework again.

A book is worse than a letter! According to the official introduction, the layout plan is an ideal space design, but in the face of the many needs of customers, the listening position often changes due to the audio-visual room or other factors that may exist in the design. For example, whether the bar needs to be increased, the depth of the bar may directly affect the change of the listening position, and the left and right entrances of some unsatisfactory audio-visual rooms may also affect the choice of the listening position. Always remember a principle, the positioning design of all speakers is designed for the listening position, not just considering the ideal position of the space.

Misunderstanding 2: Sonic therapy must be better than no therapy

In recent years, the importance of audio-visual space acoustics has been paid more and more attention by audio-visual enthusiasts. However, in many engineering cases, consumers used a lot of materials and spent a lot of money and energy, but the final result was far less than expected. It’s worse than when you don’t deal with it.

So don’t think that sonic therapy is better than no treatment. Random treatment often gets twice the result with half the effort. In order to bring a positive acoustic effect, it is necessary to selectively prescribe the correct medicine.

home theatre

Misunderstanding 3 Excessive sound absorption

“Sound reflections can cause blurry images and unnatural tone balance.” Based on this theory, many people who work in audiovisual spaces are accustomed to thinking about sound absorption first. And everyone seems to have accepted the theory that sound absorption must be strengthened on both the left and right sides, and the original intention is not wrong.

However, the sound absorption effect is not ideal in many cases. Excessive sound absorption will make the sound dry and lifeless, and will waste a lot of power from the amplifier. The reason is that the actual acoustic parameters are not considered, and the crazy pasting of soft bags has become a standard practice for some companies.

It is that a certain frequency is over-absorbed and loses the freshness of mid- and high-frequency. In fact, readers can solve the problem of sound reflection through absorption and diffusion, so that “about 75% of each wall is evenly distributed with sound absorbers, and the other 25% can be diffused, making the sound attenuation more natural and smooth”, although more To be accurate, it depends on the specific environment. This also allows people to do other leisure activities in their own space without being too dull and depressing.

Misunderstanding 4: Use software simulation instead of actual measurement

At present, most acoustic companies have adopted this method: door-to-door measurement or directly provide customers with room type data such as length, width, and height, and formulate acoustic processing plans through software simulation.

This method actually hides serious hidden dangers. In the first link, there are uncertain and uncontrollable factors for the sound effect. As we all know, the reflection coefficients of wall materials are different, but whether each wall is actually a solid brick, a hollow brick or a reinforced concrete wall, the actual low-frequency reflection is very different. However, the software cannot judge and objectively analyze these situations.

However, the problem with this test method is that the transportation of the test equipment and the travel cost of the acoustic engineer are high, and not every company is willing to adopt it. So, don’t say here why you have to charge a few machines. Our professionalism, our rigor, and our value will all be reflected in the effect!