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Air pulse generation device and sound production method thereof

A technology for generating devices and air, which is applied to frequency/directional characteristic devices, microphones, electrical components, etc., and can solve the problem that speakers are difficult to cover the audio frequency band.

Pending Publication Date: 2022-07-19
XMEMS LABS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult for existing speakers to cover the entire audio frequency band, such as from 20Hz to 20KHz

Method used

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  • Air pulse generation device and sound production method thereof
  • Air pulse generation device and sound production method thereof
  • Air pulse generation device and sound production method thereof

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Embodiment Construction

[0019] US Patent 10,425,732 provides a sound producing device or air-pressure-pulse-speaker (APPS) comprising a plurality of air pulse generating elements capable of operating at an ultrasonic pulse rate above the highest human hearing frequency ) generates a plurality of pulse-amplitude modulation (PAM) air pulses. US Patent No. 10,425,732 also discloses that the APPS can provide the function of a fan, which can be arranged in the electronic device to help the heat dissipation of the electronic device.

[0020] To further improve sound pressure level (SPL) performance and bass response, US Patent 10,771,893 provides a single ended amplitude modulation (SEAM) drive signal for The air pulse sounding device or APPS of the end of the PAM. The SEAM drive signal includes a plurality of electrical pulses. The plurality of electrical pulses have the same polarity compared to / relative to a certain voltage. For the SEAM drive signal, each electrical pulse cycle includes a PAM phase ...

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PUM

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Abstract

The invention discloses an air pulse generating device and a sound production method thereof. The air pulse generating device comprises a vibrating diaphragm structure, a valve structure and a cover body structure, a cavity is formed among the vibrating diaphragm structure, the valve structure and the cover body structure. An airwave that vibrates at an operating frequency is formed within the chamber. The valve structure is used for being actuated to perform opening and closing movement to form at least one opening. The at least one opening is communicated with air in the cavity and air outside the cavity. The opening and closing movement is synchronized with the operating frequency.

Description

technical field [0001] The present application relates to an air pulse generating device and a sounding method thereof, in particular to an air pulse generating device and a sounding method thereof capable of increasing the overall air pulse rate, improving the sound pressure level and / or saving electricity. Background technique [0002] Speaker drivers and rear enclosures are two major design challenges for the speaker industry. Existing speakers have difficulty covering the entire audio frequency band, eg, from 20Hz to 20KHz. In order to generate fidelity sound with a sufficiently high sound pressure level, the radiating / moving surfaces of existing speakers and the volume / dimension of the rear housing must be sufficiently large. [0003] Therefore, how to overcome the design challenges faced by the existing speakers and at the same time design a small sound-generating device is an important goal in the art. SUMMARY OF THE INVENTION [0004] Therefore, the main purpose ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R23/00H04R7/04
CPCH04R23/00H04R7/04H04R2499/11H04R2440/07H04R2217/03H04R2201/003H04R19/02G10K15/04H04R1/2803H04R3/04H04R1/24H04R19/005H04R7/08
Inventor 梁振宇陈文健任颉
Owner XMEMS LABS INC
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