By Ron Samuels,
When coming to examine the effect of sounds we need to refer to variety of characteristics. We know that there are sounds because we can hear them. Even as novice we know instantaneously that sounds have basic characteristics like, volume and frequency because we can sense volume and we can sense intonation. We usually base our reaction to sound effect according to our subjective criteria, which could be our neutral, pleasant or unpleasant experience of it. This occurs through our hearing sense and, to some extent, through our touch sense.
Yet, when coming to examine sound from a scientific point of view one needs tools that are much more objective than the human ear in order to study sounds phenomena and effect, tools that are commonly used in acoustic science.
From a scientific point of view the basic characteristics of sounds are sound waves and sound particles. We know by scientific experiments that sound is caused by small areas of high and low pressure propagating from the producing source. That creates what is called pressure sound wave or a sound wave. A Sound particle is a measurable mean to depict a sound wave going through a medium (air, solid, liquid). Sound particles are not real physical entities and they exist in physics to enable better understanding and accurate measurement of sound waves.
As mentioned, sound passes via a medium and that includes our body, which is also a medium. Whenever sounds enter our ear and meet our drumhead it creates a vibrating effect that varies according to its frequency and volume. The sound does not stay merely in the ear space, but propagates through bones and tissue and reaches every cell in our body. Our brain has a tremendous ability to analyze sounds and interpret them by using highly complex chemical and electrical network to process them. From that respect our sound absorption mechanisms are quite similar to our digestive systems.
Though the direct insertion of food an other chemicals to our body is considered much more effective than the effects of sounds, in reality sounds enter the body much faster than most types of directly inserted chemicals.
You may have noticed that some organs in our body react more to certain frequencies than other organs. For example: a highly strident sound has an immediate effect on our facial expression and a specific effect of increased sensitivity on our jaws and teeth. Another example is the effect of deep base low tone sound on our stomach area.
The effect of one stroke of a base guitar string is so obvious to us that we usually do not realize the involvement of a huge complexity of body cells, nerved glands and chemical reactions that produced such effects in an enormous speed.
So now we can understand that if we listen to sounds that are carefully tuned to create a specific effect on the frequency of an organ in our body, we can realize that there is a very high probability that such sound or set of sounds can change the organ's frequency and that is the background for understanding how sounds can effect organs' frequencies.
- On Sound Frequencies
- The Human Body Frequency