A team of developers from the St. Petersburg university ETU "LETI", using 2D sound visualization technology, has created a prototype navigation device for people with partial or complete vision loss.
The device measures the distance to an obstacle and emits sound signals. The volume of the sound varies depending on how far or near the object is.
If an object is close, the sound signal becomes sharp. If it is far away, it is weak
Scientists have already received a patent for their invention. Now they plan to create a portable device, for example, in the form of glasses, which will become a convenient scanner of the environment for the blind. It is possible that the developers will introduce computer vision so that the scanner informs the user about the type of object.
Earlier, scientists from Novosibirsk came up with a special material impregnation, thanks to which the item does not have to be washed - the dirt disappears under the influence of light.
