Fabric thin-belt type sound-membrane loudspeaker

A thin-ribbon loudspeaker technology, which is applied in the improvement field of ribbon loudspeakers, can solve the problems of high failure rate, great impact on sound, and low damping of aluminum strip materials, so as to save matching transformers, excellent shape retention ability, Avoid the effect of poor impact resistance

Inactive Publication Date: 2011-09-21
张百良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The impedance is too low, only about 0.01 ohms, and it cannot be directly matched with the power amplifier. A matching transformer must be added to increase the impedance, and the matching transformer has a great impact on the sound
[0005] 2. The internal damping of the aluminum strip material is too low, and the timbre also encounters the problem of coldness and hardness.
[0006] 3. The impact resistance is too poor. A slightly heavy impact can destroy the folded shape of the aluminum strip, and even the focus of the hand cannot be placed when it is put down.
However, a slightly louder volume may damage the folded shape of the aluminum strip during use, and the failure rate is too high

Method used

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  • Fabric thin-belt type sound-membrane loudspeaker
  • Fabric thin-belt type sound-membrane loudspeaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the fabric thin-ribbon sound-film loudspeaker consists of two different-named strip-shaped magnetic poles 1 juxtaposed to form a magnetic gap to form a strip-shaped permanent magnetic field, and a strip-shaped fabric thin-strip sound membrane 4 is arranged in the strip-shaped permanent magnetic field. Described strip fabric thin tape sound membrane 4 is to be 0.5 centimeters wide, and on the fabric thin tape of 10 centimeters, weaves into five enameled wires 5 (wires) of 0.06 millimeter diameter, as shown in thick solid line among the figure, and coat Cover with damping glue. Fix the strip on a 5 mm thick single-layer printed circuit board, with five copper foil lines and pads on the board, and solder the five enameled wires in the strip to the corresponding pads, so that each enameled wire forms the shape shown in the figure. The full series connection of the audio signal can generate the same phase audio current in each wire 5 when feeding ...

Embodiment 2

[0023] As shown in Figure 3, this embodiment is a double-band push-pull fabric thin-strip sound-film loudspeaker, which consists of three parallel strip magnetic poles 1 to form two adjacent left and right magnetic gaps, forming two left and right juxtaposed strip-shaped permanent In the magnetic field, in the two adjacent magnetic gaps, there are two thin fabric strips 4 coated with damping glue, and five wires 5 connected by external circuits are distributed in each thin fabric strip 4, forming A load of 8 ohms. The width and length of the fabric thin-strip sound membrane are similar to those of the traditional ribbon speaker, which is 0.5cm×10cm. When the fabric thin-strip sound membrane is fed with an audio signal through the power amplifier, there will be generated in the five wires of each fabric thin-strip sound membrane In-phase audio current, the current is affected by the N→S magnetic field to generate an in-phase driving force. Because the two juxtaposed strip perma...

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Abstract

This invention relates to one fabric film audio microphone, which comprises two bars of different magnetic electrode boards to form permanent magnetic field, wherein, the said field is set with several wires distributed along length direction to form fabric film with each wire outer circuit connection to form series connection; when audio film feeds audio signals, each wire generates same audio frequency current under magnetic function to generate same upper and down vibration drive force.

Description

technical field [0001] The present invention relates to an improvement of a ribbon loudspeaker. Background technique [0002] At present, due to the rise of SACD and DVD Audio, the high-frequency bandwidth of recording program sources has been increased from 22KHz of traditional CD to 44KHz, which brings the objective need of widening the high-end frequency response of speakers. The high-end bandwidth of traditional dome speakers, such as soft dome speakers, is only about 20KHz. Although the sound is beautiful, it cannot meet the demand. However, hard dome speakers using hard dome diaphragms such as beryllium, diamond, ceramics, etc., although the bandwidth can be extended to 40KHz, or even 100KHz, but there are two problems, one is high cost and too difficult to process, and the other is that these materials If the internal damping is too small, split vibration will easily occur, and the high-end frequency response will have large peaks and valleys, resulting in cold and h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/06H04R7/04
Inventor 张百良
Owner 张百良
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