Yes, it is not spiritual or any other thing. I am talking logically. So we can make many sounds, some may be irritating others, some irritates us, some are good, some are melody. What ever the sound it could be in any language, English, Spanish, Arabic etc., You can listen to it but to understand it you should know that language. But ultimately when look at "Silence" you have no need to learn any language, we should listen to our heart. If you are purpose is well being then practice to maintain silence at least an hour in your day. And see the difference. It is practically proved and gives you immense energy to achieve your obstacles.