This is when the surround sound test part comes in handy. This is through a “receiver” equipment, which decodes the surround sound information its receiving and then distributes it these signals, re-directing them to the correct speaker. You can check these sound effects in the Distributors trailers download section. Basically, the front speakers will always reproduce stronger sounds, meanwhile, if someone or something is making noises on the right side of the screen, you’ll listen it to it on your right speaker, (same goes for noises on the left side). The way these speakers work is very similar both in a cinema or at home. Keep in mind, old dated audio devices were monaural, meaning all the sound was coming from a single channel, meanwhile, in a surround sound system, you have multiple audio channels from where the sound is being played, logistically located both on the front and the back of the audience to create a “surrounding” experience. That being said, this is done through multiple audio channels speakers that are placed throughout the cinema (whether it is an at-home cinema or an actual movie theater). On the contrary, surround sound focuses on creating sounds that, as the name states it, surrounds the listeners and can be heard from anywhere, meaning the sounds comes from 360 degrees, and not just from the front or the back of the listener.
It is very different from the audio you'd usually get from your laptop, television or standard radio, since these ones only reproduce sound from one (or two) speakers. When we talk about surround sound, we refer to the specific type of audio that makes it seems as if the sound you're hearing is coming from all around you. But before we do that, let’s take a look at how these systems work.
That’s why today were going to talk about how to do a surround sound test for your very own home theater equipment, or for professional cinema speakers as well so that you can listen to the soundtrack of your movies as if it were a cinema thanks to IMAX Trailers or Other Trailers.