We are focusing on a receptive approach to sound therapy.
There have been studies talking about the efficacy of inaudible high-frequency sound as is in the nature, however it has been very difficult to measure the efficacy in scientifically.
Moreover, people have had a question of "how a human can hear the sound which ear cannot pick up?", Dr. Masahiro Nakagawa, a professor of Nagaoka University of Technology successfully measured that efficacy by using brainwave, based on the hypothesis that "final sensitivity information processing is done in brain regardless of sensing organ".
26 subjects from age 20s to 70s including 5 deaf ones are used for the experiment. They listened 24bit 96KHz music played by live piano and sax, played by either ordinary high-end sound system or newly developed our sound system "RINSHU".
As a result, their brainwave showed 35% improvement of peace & comfort, and 55% decrease of fear, when they were listening to "RINSHU" compared to ordinary high-end sound system. Surprisingly, this tendency was almost same among deaf subjects.
As a control experiment, we used exactly same music in same arrangement, but played by computer (sampler instruments) in 24bit 96KHz. The result was 55% decrease of peace & comfort, and 16% increase of anger.
This shows, the relaxation derived from sound, depends not only on "song itself" but on many other facts, such as how the music is performed, prayer of performers, and playback environment.
Also we have checked the activity in brain according to fractal analysis. The subject's right frontal lobe which processes peace & comfort became more active, and left frontal lobe which processes fear became less active, when the subject was listening to "RINSHU". On the contrary, this difference did not happen when the subject was listening to ordinary high-end speaker(see below gragh1). This tendency was more obvious in deaf subjects.
Gragh 2 below shows the difference of frequency response between RINSHU and ordinary high-end speaker. When it is measured in front of speaker unit (10cm), those two shows quite similar tendency (A, C), but if it is 1m away, the high frequency above 20KHz will drastically increase in RINSHU (B) but it disappears in ordinary ones (D).
Ordinary produces sound by moving corn paper back and forth and creates air movement (longitudinal wave), on the other hand RINSHU creates very subtle vibration created curved wood. This "curved wood vibration" technology has been used in hundreds of years in creating acoustic instruments, and this is why violins and guitars can be heard in big concert hall without any external amplification. Similarly, the sound of RINSHU can be heard in very far distance in even very low volume, and does not make the listeners tired after long listening. RINSYU is a united sound care system consists of music library, digital amp, and speakers.
※Our new speaker system"RINSHU"(JP patent #5393915)http://www.rinshu.net