(19)
(11) EP 0 480 561 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.09.1992 Bulletin 1992/40

(43) Date of publication A2:
15.04.1992 Bulletin 1992/16

(21) Application number: 91305535.6

(22) Date of filing: 19.06.1991
(51) International Patent Classification (IPC)5: G10K 15/08
(84) Designated Contracting States:
DE GB

(30) Priority: 12.10.1990 JP 274504/90

(71) Applicant: PIONEER ELECTRONIC CORPORATION
Meguro-ku Tokyo (JP)

(72) Inventors:
  • Matsushita, Fumio
    Tokyo (JP)
  • Tsubonuma, Hiroshi
    Tokyo (JP)

(74) Representative: Tomlinson, Kerry John et al
Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19 Kingsway
London WC2B 6UZ
London WC2B 6UZ (GB)


(56) References cited: : 
   
       


    (54) Reverberation sound generating apparatus


    (57) A reverberation sound generating apparatus, comprising a plurality of comb filters (1₁-1n) each having a delay element and a coefficient multiplier, and an adder (2) for adding output signals of the comb filters, wherein the numbers of the samples corresponding to each delay time of the comb filters are mutually prime. With such arrangement, it is possible that the impulse responses of each of the comb filters do not coincide with each other almost at all within the reverberation time. Thus, reverberation sound is not deviated over time and is dispersed uniformly, providing satisfactory reverberation tone quality.






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