G - Physics – 01 – V
Patent
G - Physics
01
V
349/3
G01V 1/00 (2006.01) G01V 1/02 (2006.01) G10K 15/12 (2006.01)
Patent
CA 1161537
ABSTRACT Disclosed is an apparatus for producing artificial reverberations by means of a uni-dimensional wave-guide, the said uni-dimensional wave-guide being obtained with digital-technology circuits and comprising at least two line-sections of different lengths, each line-section consisting of two digital delay-arrangements running parallel with each other, one for each direction of propagation. Furthermore, at least one three-gate adapter, of the wave-digital-filter type, is arranged between two line-sections adjacent each other, two gates of the said three-gate adapter each being connected to one of the two ends, facing each other, of the said two line-sections, and the relevant gate of one three-gate adapter being closed off by a frequency-dependent absorber obtained by digital-technology. Digital implementation of a uni-dimensional wave guide, fitted with discontinuities and absorbers, now makes it possible to reverberate a signal diffusely and with programmable reverberation-time frequency-response, without having to made allowances for a reduction in signal-to-noise ratio as a result of limit-cycles.
378528
Akg Akustische U. Kino-Gerate Gesellschaft M.b.h.
Fetherstonhaugh & Co.
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