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Mechanical acoustic dividing network and transducer thereof

A technology of pulse transformation and alternating electromagnetic field, which is applied in the directions of loudspeaker distribution signals, sensors, hearing aids, etc., and can solve problems such as imperfect broadband response.

Inactive Publication Date: 2004-08-04
GOOGLE TECH HLDG LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consequently, there is no separate processing of the low, mid and high frequency components of the audio program content, often resulting in a less than perfect broadband response from headphones

Method used

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  • Mechanical acoustic dividing network and transducer thereof
  • Mechanical acoustic dividing network and transducer thereof
  • Mechanical acoustic dividing network and transducer thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Figure 1 is a top elevation view of a tensioned armature reciprocating inertial transducer 100 providing a non-linear softening spring response for use in an electromechanical crossover network in accordance with the present invention. Shown in Fig. 1 is the coil former 102 that plays chassis effect, and chassis encloses electromagnetic coil 104 ( figure 2 ), the electromagnetic coil 104 acts as an electromagnetic exciter to implement an alternating electromagnetic field in response to an input signal, thereby generating motion to the moving mass 116, which will be described in detail below. The bobbin 102 is fabricated using conventional double shot injection molding techniques from a plastic material, such as a 30% glass filled liquid crystal polymer, which is completely enclosed except for the terminals 126 which provide wire connections for the electromagnetic coil 104. Coil 104. It should be understood that other plastic materials may also be used for the former 1...

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PUM

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Abstract

A taut armature reciprocating impulse transducer (100) which typically provides a non-linear hardening spring response is adapted to provide a non-linear softening spring response by the addition of magnetic damping elements (106). Two or more taut armature reciprocating impulse transducers (100) can be utilized to produce a mechanical acoustic crossover network (700) which operates to produce a wide frequency response when at least one of the two taut armature reciprocating impulse transducers (100) is adapted to provide a non-linear softening spring response. The mechanical acoustic crossover network (700) allows multiple taut armature reciprocating impulse transducers (100) to be operated together from one signal output. When the mechanical acoustic crossover network (700) is enclosed in a housing (812), the mechanical acoustic crossover network (700) can be operated as a headphone to deliver an audio output.

Description

technical field [0001] This invention relates to electromagnetic transducers, and more particularly to electroacoustic crossover networks for reciprocating pulse transducers utilizing non-linear hardened and softened spring tensioned armatures. Background technique [0002] Speaker systems utilize low-frequency (bass), mid-frequency, and high-frequency (tweeter) speakers to provide the wide operating frequency range required to reproduce audio program content with a wide frequency range. Such speaker systems often rely on crossover networks to separate the audio program content into low, mid and high frequency components for optimal reproduction by the low, mid and tweeter speakers. Such crossover networks are usually complex and add to the expense of the loudspeaker system. [0003] To provide listening capabilities to portable radio frequency receivers, earphones are often relied upon. Piezoelectric transducers are typically used in such headphones to provide the frequen...

Claims

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Application Information

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IPC IPC(8): H04R1/10B06B1/04H04R1/00H04R3/12H04R3/14H04R9/02H04R11/02
CPCH04R3/14B06B1/04H04R25/00
Inventor 杰拉尔德·E·布林克利约汉·M·迈基
Owner GOOGLE TECH HLDG LLC