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Active noise reduction sounding device based on electronic frequency division

A sound generating device and noise reduction technology, applied in electrical components, transducer circuits, transducer acoustic response prevention, etc., can solve problems such as inaccurate positioning, distortion, and blurred sound

Pending Publication Date: 2021-06-08
DONGGUAN EDIFIER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the gradual popularization of active noise reduction products, the need to improve the sound quality of active noise reduction products is becoming more and more urgent. When the music signal contains rich high, high, and low frequency tones, it is difficult for a single pronunciation unit to take care of both high, high, and low frequencies. , the sound will become blurred, and at the same time, there will be serious distortion and inaccurate positioning

Method used

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  • Active noise reduction sounding device based on electronic frequency division
  • Active noise reduction sounding device based on electronic frequency division

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] see figure 1 shown.

[0034] This embodiment provides an active noise reduction sounding device based on electronic frequency division. By performing active electronic frequency division on the audio signal, the sounding device can take into account the high, medium and low frequency sounds, so as to reproduce high-quality sounds; After the source electronic frequency division, the active noise reduction can effectively reduce the environmental noise and improve the user experience.

[0035] Specifically, the sounding device includes an audio receiving module 11, an active electronic frequency division module 12, a dynamic range control module 13, a digital-to-analog conversion module 14, a power amplification module 15, a sounding module 16 and an active Noise reduction module17.

[0036] The audio receiving module 11 is used for receiving audio signals.

[0037] Specifically, when the audio signal is an analog signal, it can be received through wired communication....

Embodiment 2

[0046] On the basis of Embodiment 1, the audio signal can be frequency-divided into signals of at least two frequency bands.

[0047] Optionally, the signals of multiple frequency bands are a combination of at least two frequency band signals among low frequency signals, intermediate frequency signals, mid-low frequency signals and high frequency signals.

[0048] As a preferred implementation of this embodiment, the audio signal can be divided into two frequency bands, high frequency and low frequency, such as figure 2 shown.

[0049] Specifically, the dynamic range control module 13 includes a first dynamic range control module 131 and a second dynamic range control module 132, and the digital-to-analog conversion module 14 includes a first digital-to-analog conversion module 141 and a second digital-to-analog conversion module 142. The amplifying module 15 includes a first power amplifying module 151 and a second power amplifying module 152 , and the sounding module inclu...

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Abstract

The invention discloses an active noise reduction sounding device based on electronic frequency division. The active noise reduction sounding device comprises an audio receiving module, an active electronic frequency division module, a dynamic range control module, an active noise reduction module, a digital-to-analog conversion module, a power amplification module and a sounding module. According to the active noise reduction sounding device based on electronic frequency division provided by the embodiment of the invention, the active electronic frequency division module, the digital-to-analog conversion module and the sounding module are added to the active noise reduction sounding device, so that the music playback effect of the active noise reduction sounding device can be greatly improved, the advantages of each module are fully played, and high-quality music playback is provided while the environmental noise is effectively reduced. By adding the dynamic range control module behind the active electronic frequency division module, the dynamic range of audio frequency after frequency division is effectively controlled, so that the output sound pressure of the sounding module is controlled, and the effects of protecting hearing and protecting the sounding module are achieved.

Description

technical field [0001] The invention belongs to the technical field of sounding devices, in particular to an active noise reduction sounding device based on electronic frequency division. Background technique [0002] With the gradual popularization of active noise reduction products, the need to improve the sound quality of active noise reduction products is becoming more and more urgent. When the music signal contains rich high, high, and low frequency tones, it is difficult for a single pronunciation unit to take care of both high, high, and low frequencies. , the sound will become blurred, and at the same time, serious distortion and inaccurate positioning will occur. Contents of the invention [0003] The purpose of the present invention is to provide an active noise reduction sound generating device based on electronic frequency division to solve the above technical problems. [0004] For reaching this purpose, the present invention adopts following technical scheme...

Claims

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Application Information

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IPC IPC(8): H04R3/00H04R3/02
CPCH04R3/00H04R3/02
Inventor 温煜李虎唐旭
Owner DONGGUAN EDIFIER TECH