SU1019480A1 - Room acoustic simulating device - Google Patents

Abstract

A DEVICE FOR MODELING ACOUSTICS OF PREMISES OF PRESENT SATURELY ARTIGELINE) SOCIAL SUROPE SIMULATOR, consisting of point and mobile sources of SAET, and means of registering the spread of sound,. about tl and ch yu shche e with the fact that; With the goal of improving convenience and reducing insemination, coupled with useful reflections from sound velons, the simulator has paired photodiodes with LEDs installed at reception points and a single light source, blocks of photodiodes with LEDs installed on the reflecting surface of the hall, and the jogging mechanism; electrically connected with the photodiodes of the receiving points, the imaginary light sources are rendered in the form of full-reflectors. (0 F 4 About F:

Description

The invention relates to educational devices and the hell of studying reflections in the archives of indoor acoustics of rooms and other areas of science and technology can be used.

It is known a device to mobilize acoustasis of rooms, containing a sound radiation simulator consisting of point and imaginary light sources, and means for registering radiation propagation fl}.

A disadvantage of the known device is the lack of visual reflection of useful reflections, and a graphical image of the main picture. reflections require significant overhead of labor and time.

The aim of the invention is to increase the comfort and. reduced time for modeling useful reflections of sound waves,

The goal is achieved by the fact that in a device containing a sound simulator, consisting of point and imaginary light sources, and a means of registering the propagation of radiation, the simulator has paired photodiodes with LEDs for mounting at point of reflection and a point light source, photo blocks ., diodes with light emitting diodes mounted on reflecting surfaces of the hall, the mechanism of step-by-step movement of blocks electrically connected with photodiodes gives reception points, while imaginary {SOURCES of light are made a beam deflector.

The drawing shows a diagram of the device for the simulation of room acoustics using the example of an auditorium. ; . :,

The device contains a model of 1 room, 2 places of reception of reflections, implemented in a vice-matrix, q Co-ray of light-receiving diodes-photodiodes with LEDs, light-receivers-photodiodes 3 with light-diodes, set-up light-emitting diodes photo-light-emitting diodes 4, with light diodes, and optics; , stage 6, imaginary source 7, virtual point source 8, radiating a highly directional beam. At the light source equidistantly the circle from the other and from the beam there are three light fixtures, reflecting surfaces 9–13 of the ceiling and walls, and planes of 14–16 imaginary sources.

The device works as follows.

In a given place, naprzgmer, stage 6, a point source is set normal to the reflecting surface, and symmetry is restored between it and the imaginary source 7, located, for example, on plane 14. To do this, move the first source 7 along the plane 14,, At least one of the LEDs installed on the light source is lit.

Then they fix the imaginary source 7 at the found point of symmetry1 and orient it towards the matrix of the places where reflections are received (seats). To determine the area of the first reflections, the imaginary source 7 is directed first to the near rows located closer to the stage, and then to the back (the points of viewer points marked on the drawing). The light beam of the point source 8, reflecting from the imaginary source 7, hits one of the photodiodes, turns on its optical signal and gives a command to move the light receiver 3 installed on the ceiling and the corresponding Maiv range. REID, onto which the beam was hit. The specified light-receiver moves across the ceiling surface according to the raster principle with a given pin corresponding to the pitch of the array until its photodiode falls on the beam. A product beam reflected from an imaginary source 7 will not illuminate its light output. A light emitting diode 3 will mark the reflection point on the sense of light for a given beam of light, and the matrix LED will indicate the viewer in hall 5, where the drop is the reflected beam from the ceiling 9.

Then, the beam reflected by the imaginary source 7 is directed to other visible places and the point from the ceiling image is determined. The areas of the first reflections are determined by the light points on the ceiling with one fixed position of a real point source 8.

In order to determine the whole area, the first reflections from the ceiling 9, source 8 must be located at least in four lateral positions on stage 6 and each time with restoring the symmetry of sources 7 and 8.

After determining the areas of the first psyche reflections on the ceiling,

11019480

This is also a way of defining the areas of the section -About you vdnno-maps of reflections

hard on the walls, the source of the 8 may be about 1 meter of TV

normal to one or another wall. to improve acoustic harsisterssk

premises.

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Claims (1)

DEVICE FOR MODELING ACOUSTICS OF PREMISES, mainly of the auditorium, containing a simulator of sound radiation, consisting of point and imaginary light sources, and a means for recording the propagation of radiation, with the exception of the fact that; in order to improve the convenience and reduce the time of modeling useful reflections of sound waves, the simulator has paired photodiodes with LEDs for installation at the points of reception of reflections and a point light source, blocks of photodiodes with LEDs for installation on reflective surfaces of the hall, a step-by-step mechanism for moving blocks electrically connected with photodiodes for Reception points, while the imaginary light sources are made in the form of rotary reflectors.