METHOD OF SIMULATING ACOUSTIC PROCESSES IN ENCLOSED SPACES,
Abstract
The object of the invention is a method of simulating acoustic processes in enclosed spaces with the aid of supersonic signals emitted and received in a reduced model of an investigated space which is distinguished by the fact that for the purpose of narrowing the frequency range a signal of low frequency subjected to conversion into supersonic is separated into two components, a lowfrequency and a high-frequency one is changed into supersonics by the transposition of the spectrum upwards in accordance with the scale of the model through the recording of it on a magnetic tape, and the high-frequency component by means of amplitude modulation by it of sinusoidal oscillation of some high frequency and subsequent separating and emission in the model of one lateral band of modulated oscillation. The method is distinguished by the fact that for the purpose of synchronization of the low-frequency and high-frequency components of a signal passing through the model the low- and high-frequency components of the signal are preliminarily recorded on separate tracks of one tape or a multichannel magnetictape recorder and afterwards reproduced in turn in such a way that the low-frequency component, at the properly increased speed, and the signals received in the reproduction in turn of the low-frequency and high-frequency components are recorded on another track of the same magnetic tape. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 29, 1965
- Accession Number
- AD0615253
Entities
People
- B. G. Belkin
Organizations
- National Air and Space Intelligence Center