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Loudspeaker system with improved sound

a technology of loudspeaker and sound, applied in the direction of ferririte aluminosilicate zeolite, crystalline aluminosilicate zeolites, transportation and packaging, etc., can solve the problems of aging of sorbers in particular by irreversible adsorption

Inactive Publication Date: 2013-07-04
SOUND SOLUTIONS INTERNATIONAL COMPANY LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a loudspeaker device that includes a loudspeaker and a zeolite material. The zeolite material is made up of small particles with a silicon to aluminum mass ratio of at least 200. The zeolite material has been found to have good sorption capacity and a slow aging behavior. The zeolite material can be formed by mixing a zeolite suspension with a binder suspension and then drying it. The patent also describes the structure of the zeolite particles, which have a certain size and spacing between them. The second aspect of the patent describes a method for making the zeolite material by preparing a zeolite suspension, mixing it with a binder suspension, and then drying it. The technical effects of the patent include improved sorption capacity and slow aging behavior in the loudspeaker device, as well as the use of zeolite material in the loudspeaker.

Problems solved by technology

However, it turned out that the use of sorbers bears several problems.
One problem is the aging of the sorber in particular by irreversible adsorption of substances with high vapour pressure.

Method used

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  • Loudspeaker system with improved sound
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  • Loudspeaker system with improved sound

Examples

Experimental program
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Effect test

Embodiment Construction

[0044]The illustration in the drawings is schematic. It is noted that in different figures, similar or identical elements are provided with the same reference signs or with reference signs, which are different from the corresponding reference signs only within the first digit.

[0045]In the following, the measurement methods employed to determine the experimental results which are presented herein are described.

Room Temperature Nitrogen Sorption Measurements

[0046]Nitrogen adsorption isotherms have been determined at 25 degrees Celsius (° C.) between 25 millibar (mbar) and 1100 mbar with a sorption measurement device “Nova 1000e” of the firm “Quantachrome”. Further technical information is available from the technical datasheets of the firm “Quantachrome”, e.g. in the section “A Method for the Determination of Ambient Temperature Adsorption of Gases on Porous Materials” in Powder Tech Note 19.

Measurement of the Electrical Impedance

[0047]The measurement of the loudspeaker impedance is b...

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Abstract

A loudspeaker device (200) is presented which includes a zeolite material (100) comprising zeolite particles (102) having a silicon to aluminum mass ratio of at least 200. For an increased pore fraction of pores with a diameter in a range between 0.7 micrometer and 30 micrometer shows an increased shift of the resonance frequency down to lower frequencies has been observed.

Description

FIELD OF INVENTION[0001]The present invention relates to the field of loudspeaker devices.ART BACKGROUND[0002]In loudspeaker devices, including a loudspeaker, a housing and a resonance space, gas adsorbing materials—in the following referred to as sorber—like e.g. activated carbon or zeolite may be placed therein to improve sound generation of the loudspeaker device. A sorber in the resonance space of the loudspeaker leads to an apparent virtual enlargement of the resonance space by gas adsorption and desorption. The resonance frequency of the loudspeaker device is thereby lowered to a value that can be achieved without sorber only with an essentially larger resonance space.[0003]However, it turned out that the use of sorbers bears several problems. One problem is the aging of the sorber in particular by irreversible adsorption of substances with high vapour pressure.[0004]EP 2 003 924 A1 relates to a loudspeaker system in which a gas adsorber, obtained by adding a binder to a porou...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04R1/00
CPCB01J20/18H04R1/00B01J20/186B01J20/26B01J20/261B01J20/264B01J20/28004B01J20/2803B01J20/28078B01J20/28085B01J20/28092B01J20/3293B01J2220/66C01B39/38C01B39/44H04R1/2803B01J20/183C01B39/46B01J20/28016B01J20/28083B01J20/165B01J20/2808B01J20/28088H04R1/02Y10T428/2982H04R1/28H04R1/2811H04R1/288
Inventor PAPAKYRIACOU, MARIAKOBLER, JOHANNESSAUER, JURGEN
Owner SOUND SOLUTIONS INTERNATIONAL COMPANY LTD
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