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Bass Reflex Speaker with Notched Air Duct

A kind of speaker, notch technology

Active Publication Date: 2018-08-03
NEXO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] At present, this performance deficiency of bass reflex speakers cannot be corrected by signal processing, because the signal processing will act on the speaker and the duct in the same proportion

Method used

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  • Bass Reflex Speaker with Notched Air Duct
  • Bass Reflex Speaker with Notched Air Duct
  • Bass Reflex Speaker with Notched Air Duct

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0090] Conventional bass-reflex loudspeakers1 typically have, inter alia, figure 1 The parallelepiped shape is shown, but any shape type is suitable.

[0091] Here, the height of the enclosure 1 is defined as the dimension of the enclosure defined between the upper face 11 and the lower face 12 . The loudspeaker 1 has a front face 15 on which the loudspeaker 2 and the air duct 3 are positioned. The rear face 14 is opposite the front face 15 . Finally, the loudspeaker 1 has two side faces, one of which is a fond 13 .

[0092] The air duct 3 has an outlet 32 ​​leading to the front face 15 of the enclosure 1 . This outlet 32 ​​is typically an aperture or cutout formed in the front face 15 of the enclosure 1 .

[0093] The air duct 3 comprises a housing delimited by a first inner partition 33 , a second partition 34 here constituted by the base 13 , an upper partition 35 and a lower partition 36 . The upper partition 35 is here formed by a part of the upper face 11 , and the l...

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PUM

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Abstract

The speaker cabinet (1) includes at least one loudspeaker (2) and at least one port (3), the port having an outlet (32) formed in a wall of the cabinet (1), an inlet (31) inside the cabinet (1), and a casing connecting the inlet (32) and the outlet (31) together, the inlet (32) of the port (3) further having at least one recess in the casing.

Description

technical field [0001] The present invention relates to a sound box, and more particularly to a sound box with an air duct, which is also called a bass reflex sound box. Background technique [0002] Traditionally, such enclosures include, in addition to the loudspeaker, an air duct (évent) to increase radiation at the lowest frequencies (typically between 20 Hz (Hertz) and 200 Hz) compared to a closed enclosure, i.e., an enclosure without ducts. s efficiency. [0003] Some enclosures may include multiple speakers, and / or multiple ducts for increased low frequency power. [0004] Therefore, if Figure 5 As shown, the bass-reflex loudspeaker has two types of radiating surfaces, namely, on the one hand, around the tuning frequency f c One (or more) air ducts that radiate (curve EV) and on the other hand their radiation (curve HP) at the limiting contribution frequency f L One (or more) loudspeakers above the radiation of the one (or more) air ducts. The above two frequenci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/28H04R1/32H04R1/20
CPCH04R1/2826H04R1/323H04R1/20H04R1/28H04R1/32
Inventor M·拉里厄
Owner NEXO