It is generally known that humans can hear between 20Hz and 20KHz, and dogs, up to 21.1KHz. Most adults are unable to recognize the frequency range of Sonic Code® but may be faint for small children, pets, and people who are very sensitive to hearing.

For us, the user-health is always principal consideration. According to a paper jointly researched by Showa University Medical School of Yamaha in Japan, sound waves below 20KHz are harmless to humans and animals. Infosonic designed Sonic Code® to transmit only a short distance of about 20cm at weak energy compared to competitors and recommends that customers use it at a sufficiently low volume for a short time through the documents provided at the time of sale.

None of the technologies or algorithms used in Sonic Code® are entirely new. These are already well-established in academia and industry, such as ‘discrete structures’, ‘information theory’, ‘digital signal processing’, and ‘artificial intelligence’. We have been working for a long time to create the products we want by combining existing theories and technologies. Sonic Code® of today is a product that we have continually improved by repeating the process of designing, manufacturing, and testing, based on existing theories and technologies.

Generally speaking, noise refers to a situation in which the energy in the audible frequency range gets strong. This frequency range is very far from the frequency range of Sonic Code® use, so there is almost no frequency interference problem. Therefore, there is no problem in recognizing the Sonic Code®.

Rather than the everyday noise environment, there may be a problem of recognizing the sound waves in special situations where a strong energy signal transmits continuously in a high-frequency band. Currently, in Japan, a service that outputs high-frequency signals over 20KHz is used to prevent harmful vermin from entering the restaurant at night.

As a result of our investigation, it confirmed that the Sonic Code® was not recognized where the high frequency of the corresponding frequency band measured at the power level above the 40 dB range.

However, if the public is exposed to a substantial amount of powerful energy in the high-frequency band for a brief period in such a place, the general people may feel a great deal of discomfort and nausea. Therefore, it is possible to say that many people rarely use such harmful vermin control services in a general place.

In other words, in the everyday environment where Sonic Code® used, it is also possible to say that the control of vermin service frequency may not interfere with Sonic Code® service.

At the Starbucks stores in South Korea, the sonic beacon service named Siren Order is in service. It applied to an environment in which an audible sound wave signal continuously emitted from the same frequency range through a speaker of high power. Sonic Code® has conducted signal recognition as well as signal detection tests at several Starbucks stores in Korea more than 10,000 times, and all have worked flawlessly.