Reverberation imparting device

Abstract

A reverberation imparting device comprises a prememory storing an input signal, a level detection circuit responsive to data stored in the prememory for detecting presence or absence of the input signal, a data memory storing a delayed input signal delivered out of the prememory, a fixed type convolution operation circuit for producing a reverberation signal with respect to the data stored in the prememory by using an initial portion of parameters of a reflected sound, an adaptive type convolution operation circuit for producing a reverberation signal with respect to data stored in the data memory by using a plurality of parameters of more significant bits among the remaining portion of the parameters of the reflected sound, and an adder for adding outputs of the fixed type and adaptive type convolution circuits and delivering out the result of addition as a reverberation signal. In one aspect of the invention, the reverberation imparting device further comprises a frequency characteristics control circuit for controlling frequency characteristics of a reverberation sound and a frequency characteristics setting circuit for timewise changing filter characteristics of the frequency characteristics control circuit.

Dependencies are inferred from the claim text.