GB1209360A - Arrangement for producing artificial reverberation - Google Patents

Arrangement for producing artificial reverberation

Info

Publication number
GB1209360A
GB1209360A GB57483/68A GB5748368A GB1209360A GB 1209360 A GB1209360 A GB 1209360A GB 57483/68 A GB57483/68 A GB 57483/68A GB 5748368 A GB5748368 A GB 5748368A GB 1209360 A GB1209360 A GB 1209360A
Authority
GB
United Kingdom
Prior art keywords
spring
pass filter
transducers
magnets
longer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB57483/68A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AKG Acoustics GmbH
Original Assignee
AKG Akustische und Kino Geraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AKG Akustische und Kino Geraete GmbH filed Critical AKG Akustische und Kino Geraete GmbH
Publication of GB1209360A publication Critical patent/GB1209360A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/08—Arrangements for producing a reverberation or echo sound
    • G10K15/10—Arrangements for producing a reverberation or echo sound using time-delay networks comprising electromechanical or electro-acoustic devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

1,209,360. Reverberation devices; transducers. AKUSTISCHE u. KINO. GERATE G.m.b.H. 4 Dec., 1968 [7 Dec., 1967], No. 57483/68. Headings H4J and H4R. A reverberation system includes two helical spring delay members which are of different length and transit time properties with an input and output transducer associated with each spring. The frequency of the signal applied to the system is divided so that both springs are subjected only to torsional vibration. The frequency range is preferably equally divided and this may be accomplished mechanically and/or electrically. In the wholly mechanical system shown, spring 1 has a longer transit time, e.g. 120 ms., and spring 2 a shorter time, e.g. 60 ms., and the springs are connected at each end to rotary magnets 3, 4 of input and output transducers of the dynamic type. The magnets 3, 4 are connected to a fixed part of the system by wire elements 5 which are axially stiff but torsionally soft for the longer spring and wires 7 which are stiff axially and torsionally for the shorter spring. If electrical frequency division is used a low-pass filter is connected in the circuit of one or both of the transducers for the longer spring and a high pass filter in the circuit associated with the shorter spring, Fig. 2 (not shown). Preferably the high pass filter is replaced by a band pass filter and the transducer magnets are embedded in foam.
GB57483/68A 1967-12-07 1968-12-04 Arrangement for producing artificial reverberation Expired GB1209360A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1110067A AT279202B (en) 1967-12-07 1967-12-07 Arrangement for generating artificial reverberation

Publications (1)

Publication Number Publication Date
GB1209360A true GB1209360A (en) 1970-10-21

Family

ID=3626745

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57483/68A Expired GB1209360A (en) 1967-12-07 1968-12-04 Arrangement for producing artificial reverberation

Country Status (4)

Country Link
US (1) US3587006A (en)
AT (1) AT279202B (en)
DE (1) DE1812515A1 (en)
GB (1) GB1209360A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT300400B (en) * 1970-04-20 1972-07-25 Akg Akustische Kino Geraete Device for generating artificial reverberation
US3980828A (en) * 1975-10-03 1976-09-14 Kurt Orban Company Reverberation system with extended frequency response
JPS57133493A (en) * 1981-02-13 1982-08-18 Sony Corp Spring type reverberation adding apparatus
US5431591A (en) * 1994-02-01 1995-07-11 Muzzi; Juan Carlos C. Helical spring pressure activated musical toy
US6000991A (en) * 1998-03-26 1999-12-14 Pragmatic Designs, Inc. Helical coil spring toy and a response device therefor

Also Published As

Publication number Publication date
DE1812515A1 (en) 1969-07-03
US3587006A (en) 1971-06-22
AT279202B (en) 1970-02-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees