WO1999063787A1 - Dispositif pour restituer des sons - Google Patents

Dispositif pour restituer des sons Download PDF

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Publication number
WO1999063787A1
WO1999063787A1 PCT/DE1999/001376 DE9901376W WO9963787A1 WO 1999063787 A1 WO1999063787 A1 WO 1999063787A1 DE 9901376 W DE9901376 W DE 9901376W WO 9963787 A1 WO9963787 A1 WO 9963787A1
Authority
WO
WIPO (PCT)
Prior art keywords
sounds
acoustic modulator
frequency range
acoustic
audible
Prior art date
Application number
PCT/DE1999/001376
Other languages
German (de)
English (en)
Inventor
Christoph Mayer
Original Assignee
Pcs Pc-Systeme Entwicklungs- Und Produktionsgesellschaft Mbh & Co. Kg
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 Pcs Pc-Systeme Entwicklungs- Und Produktionsgesellschaft Mbh & Co. Kg filed Critical Pcs Pc-Systeme Entwicklungs- Und Produktionsgesellschaft Mbh & Co. Kg
Publication of WO1999063787A1 publication Critical patent/WO1999063787A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • 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
    • G10K15/02—Synthesis of acoustic waves

Definitions

  • the invention relates to a device for reproducing sounds according to the preamble of claim 1.
  • the cramped space prevents the use of larger speakers.
  • the object of the present invention is therefore to provide a device for reproducing sounds, by means of which higher-quality sounds are obtained despite the limited space.
  • two very small loudspeakers each working in a different inaudible frequency range, are arranged and controlled in connection with a common acoustic modulator in such a way that the frequency range between the working frequencies of the very small loudspeakers is acoustically modulated and therefore audible sounds is converted.
  • the acoustic modulator common to the two very small loudspeakers is then integrated into the housing wall of an electrical device, for example, and does not require any additional space there.
  • FIG. 1 shows a loudspeaker device according to the invention in a basic illustration
  • FIG. 2 shows characteristic curves required for an acoustic modulator according to FIG. 1
  • FIG. 3 shows a possible acoustic modulator that can be used in FIG. 1 in a basic illustration.
  • Figure 1 shows a device for reproducing sounds consisting of two very small speakers L1 and L2.
  • the very small loudspeakers Ll and L2 are mounted on an acoustic modulator AM.
  • Each of the very small loudspeakers L1 and L2 each produce sounds in a different frequency range fl or f2 with fl, f2> 20 kHz. Your sounds are therefore inaudible.
  • the frequency difference between the working frequencies fl, f2 of the very small loudspeakers L1, L2 is transformed into the audible frequency range by acoustic modulation.
  • the acoustic modulator AM consists of a material or a structure that has a non-linear characteristic curve or deflection and pressure.
  • Corresponding characteristic curves a and b are shown in a coordinate system in FIG.
  • the abscissa indicates the pressure p and the ordinate the deflection S.
  • the characteristic curve a is similar to the input characteristic curve of a transistor.
  • FIG. 3 A possible structure of the acoustic modulator AM is shown in more detail in FIG. 3.
  • the structure consists of a soft material WM and cavities HR.
  • the soft material can be plastic, for example.
  • the structure must be matched to the pressure generated by the very small loudspeakers L1, L2 and to the frequency to be radiated.
  • the size of the surface determines the lower cut-off frequency.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

L'invention concerne un dispositif servant à restituer des sons de haute qualité dans des appareils à rapports spatiaux restreints, prévu par exemple dans des blocs-notes et comprenant deux très petits haut-parleurs (L1, L2) fonctionnant chacun dans une gamme de fréquence (f1, f2) inaudible de manière différenciée. Ces haut-parleurs sont montés et pilotés conjointement avec un modulateur acoustique commun (AM), de manière que la fréquence différentielle présente entre les fréquences de travail (f1, F2) soit convertie dans la fréquence audible par modulation acoustique du modulateur acoustique (AM), en sons audibles.
PCT/DE1999/001376 1998-05-29 1999-05-06 Dispositif pour restituer des sons WO1999063787A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19824156.9 1998-05-29
DE1998124156 DE19824156C2 (de) 1998-05-29 1998-05-29 Vorrichtung zur Wiedergabe von Klängen

Publications (1)

Publication Number Publication Date
WO1999063787A1 true WO1999063787A1 (fr) 1999-12-09

Family

ID=7869372

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/001376 WO1999063787A1 (fr) 1998-05-29 1999-05-06 Dispositif pour restituer des sons

Country Status (2)

Country Link
DE (1) DE19824156C2 (fr)
WO (1) WO1999063787A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1951669A (en) * 1931-07-17 1934-03-20 Ramsey George Method and apparatus for producing sound
US3612211A (en) * 1969-07-02 1971-10-12 William T Clark Method of producing locally occurring infrasound
EP0390123A2 (fr) * 1989-03-31 1990-10-03 Kabushiki Kaisha Kenwood Générateur acoustique non directionnel et système de haut-parleur associé
EP0599250A2 (fr) * 1992-11-24 1994-06-01 Canon Kabushiki Kaisha Dispositif de sortie acoustique, et arrangement électronique muni d'un tel dispositif
WO1998002978A1 (fr) * 1996-07-17 1998-01-22 American Technology Corporation Dispositif heterodyne acoustique et procede associe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9303540U1 (de) * 1993-03-11 1993-05-06 Automation Dr. Meggl GmbH, 8047 Karlsfeld Lautsprecheranordnung
CA2154318A1 (fr) * 1994-08-25 1996-02-26 Richard David Poole Combine de radiotelephone adaptable
DE19520947C5 (de) * 1995-06-02 2012-04-05 Constin Design Gmbh Tragbarer Computer mit Telekommunikationseinrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1951669A (en) * 1931-07-17 1934-03-20 Ramsey George Method and apparatus for producing sound
US3612211A (en) * 1969-07-02 1971-10-12 William T Clark Method of producing locally occurring infrasound
EP0390123A2 (fr) * 1989-03-31 1990-10-03 Kabushiki Kaisha Kenwood Générateur acoustique non directionnel et système de haut-parleur associé
EP0599250A2 (fr) * 1992-11-24 1994-06-01 Canon Kabushiki Kaisha Dispositif de sortie acoustique, et arrangement électronique muni d'un tel dispositif
WO1998002978A1 (fr) * 1996-07-17 1998-01-22 American Technology Corporation Dispositif heterodyne acoustique et procede associe

Also Published As

Publication number Publication date
DE19824156A1 (de) 1999-12-09
DE19824156C2 (de) 2000-10-12

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