CN213485155U

CN213485155U - Sound production device based on active electronic frequency division

Info

Publication number: CN213485155U
Application number: CN202120777006.5U
Authority: CN
Inventors: 温煜; 李虎; 唐旭
Original assignee: Dongguan Edifier Technology Co ltd
Current assignee: Dongguan Edifier Technology Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-06-18
Anticipated expiration: 2031-04-15

Abstract

The utility model discloses a sound generating mechanism based on active electron frequency division, include: the device comprises an audio receiving module, an active electronic frequency division module, a dynamic range control module, a digital-to-analog conversion module, a power amplification module and a sounding module. The utility model provides a pair of sound generating mechanism based on active electron frequency division, insert dynamic range control module group at the back of active electron frequency division module, the dynamic range of audio frequency behind the effective control frequency division, the advantage of each module of full play, bring more clearly more finely and finely divided, well-arranged music, provide higher playback quality, avoid arousing hearing impaired and loudspeaker damage because of the audio frequency dynamic range exceeds standard, user hearing and sound generating module have been protected, electro-acoustic conversion efficiency has still been improved simultaneously, the consumption is reduced and the sound generating mechanism standby time is prolonged.

Description

Sound production device based on active electronic frequency division

Technical Field

The utility model belongs to the technical field of sound generating mechanism, especially, relate to a sound generating mechanism based on active electron frequency division.

Background

With the progress of technology and the higher and higher requirements of people on the tone quality, lossless music is more and more popular. Lossless music may include sound waves of entire sound frequencies. When the high, medium and low frequency sounds contained in the music signal are rich, the single diaphragm of the sound generation unit needs to emit the sounds of the high, medium and low frequencies, the load is very large, the high, medium and low frequencies cannot be considered simultaneously, the emitted sounds cannot better restore the original timbre, and the defects of serious distortion and inaccurate positioning are generated.

For this reason, the prior art proposes a sound frequency division technique, in which high, medium and low frequencies are emitted through different sound emission units. However, the high, medium and low frequency sound is directly input into the digital-to-analog conversion module after being frequency-divided, and the dynamic range of the audio frequency is easily out of standard, and the pronunciation unit and the hearing of the user are damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sound generating mechanism based on active electron frequency division to solve above-mentioned technical problem.

To achieve the purpose, the utility model adopts the following technical proposal:

an active electronic frequency division based sound generating device, comprising:

the audio receiving module is used for receiving audio signals in a wired and/or wireless communication mode;

the active electronic frequency division module is connected with the audio receiving module and is used for dividing the audio signal into signals of at least two frequency bands, and the frequency division slope is not less than 12dB per octave;

the dynamic range control module is connected with the active electronic frequency division module, and limits output sound pressure to protect hearing and protect the sound production unit by controlling the dynamic range of signals of each frequency band; the dynamic range control module can be opened or closed according to actual use scenes;

the digital-to-analog conversion module is connected with the dynamic range control module;

the power amplification module is connected with the digital-to-analog conversion module;

and the sounding module is connected with the power amplification module.

Optionally, the dynamic range control module includes a plurality of dynamic range control modules, the digital-to-analog conversion module includes a plurality of digital-to-analog conversion modules, the power amplification module includes a plurality of power amplification modules, the sound production module includes a plurality of sound production modules.

Optionally, the plurality of dynamic range control modules, the plurality of digital-to-analog conversion modules, the plurality of power amplification modules, and the plurality of sounding modules are sequentially connected.

Optionally, the signals of the at least two frequency bands are a combination of at least two frequency band signals of a low frequency signal, an intermediate frequency signal, a medium and low frequency signal, and a high frequency signal.

Optionally, the audio receiving module comprises an audio interface module;

the audio interface module is used for receiving the audio signal in a wired and/or wireless communication mode.

Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:

the embodiment of the utility model provides a pair of sound generating mechanism based on active electron frequency division, insert dynamic range control module group at the back of active electron frequency division module, can the dynamic range of audio frequency behind the effective control frequency division, thereby let digital analog conversion module, power amplification module and sound production module work at the preferred state, the advantage of each module of full play, it is more clear fine and smooth to bring, well-arranged music, provide higher playback quality, avoid arousing hearing impaired and loudspeaker damage because of audio frequency dynamic range exceeds standard, user hearing and sound production module have been protected, the electro-acoustic conversion efficiency has still been improved simultaneously, the consumption is reduced and the extension sound generating mechanism stand-by time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the range which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic structural diagram of a sound generating device based on active electronic frequency division according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another sound generating device based on active electronic frequency division according to an embodiment of the present invention.

Illustration of the drawings:

11. an audio receiving module; 12. an active electronic frequency division module; 13. a dynamic range control module; 14. a digital-to-analog conversion module; 15. a power amplification module; 16. a sound producing module; 131. a first dynamic range control module; 132. a second dynamic range control module; 141. a first digital-to-analog conversion module; 142. a second digital-to-analog conversion module; 151. a first power amplification module; 152. a second power amplification module; 161. a first sound emitting module; 162. and the second sound production module.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Please refer to fig. 1.

The embodiment provides a sound generating device based on active electronic frequency division, and the active electronic frequency division is carried out on an audio signal, so that the sound generating device can give consideration to high, medium and low frequency sound so as to restore and generate sound with higher quality.

Specifically, the sound generating device includes an audio receiving module 11, an active electronic frequency dividing module 12, a dynamic range control module 13, a digital-to-analog conversion module 14, a power amplification module 15, and a sound generating module 16.

The audio receiving module 11 is used for receiving an audio signal.

Specifically, when the audio signal is an analog signal, it may be received by means of wired communication. For example, the audio receiving module 11 is provided with an audio interface module for receiving an analog audio signal.

When the audio signal is a digital signal, the audio interface module can also receive the audio signal in a wireless communication mode.

Thus, the sound generating device may take many forms, including but not limited to a wired headset, a wireless headset, a TWS Bluetooth headset, a stereo, and the like.

The active electronic frequency dividing module 12 is connected to the audio receiving module 11. When the audio receiving module 11 receives the digital audio signal, the active electronic frequency dividing module 12 divides the frequency of the digital audio signal into at least two frequency bands, and the frequency division slope is not less than 12dB per octave. When the audio receiving module 11 receives an analog audio signal, the analog audio signal needs to be converted into a digital audio signal, and then the digital audio signal is input into the active electronic frequency division module 12 for frequency division, wherein the frequency division slope is not less than 12dB per octave. In short, the active electronic frequency dividing module 12 is mainly used for dividing the frequency of the audio signal received by the audio receiving module 11.

After the audio signal is divided into signals of at least two frequency bands, the signals are input into the dynamic range control module 13, so as to realize the dynamic range control of the signals. Dynamic range control is a signal amplitude adjustment method that can prevent the dynamic range of audio signals from exceeding the standard, thereby protecting the hearing of users and the sound module 16.

After the dynamic range control of the audio signal is completed, the audio signal passes through the digital-to-analog conversion module 14 and the power amplification module 15 in sequence, and finally is sounded through the sounding module 16. It should be understood that the digital-to-analog conversion module 14 is used for converting the digital signal into an analog signal, and the power amplification module 15 is used for amplifying the signal to provide sufficient current/voltage to drive the subsequent sound-emitting module 16.

In summary, the sound generating apparatus based on active electronic frequency division provided by this embodiment has the dynamic range control module 13 connected to the back of the active electronic frequency division module 12, and can effectively control the dynamic range of the audio frequency after frequency division, so that the digital-to-analog conversion module 14, the power amplification module 15, and the sound generating module 16 work in a better state, and the advantages of each module are fully exerted, so as to bring more clear, fine and well-graded music, provide higher playback quality, avoid hearing damage and speaker damage caused by the exceeding of the audio dynamic range, protect the hearing of the user and the sound generating module 16, simultaneously improve the electro-acoustic conversion efficiency, reduce the power consumption, and prolong the standby time of the sound generating apparatus.

Example two

On the basis of the first embodiment, the audio signal may be divided into at least two frequency band signals.

As a preferred implementation of this embodiment, the audio signal may be divided into two frequency bands, a high frequency band and a middle and low frequency band, as shown in fig. 2.

Specifically, the dynamic range control module 13 includes a first dynamic range control module 131 and a second dynamic range control module 132, 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 power amplification module 15 includes a first power amplification module 151 and a second power amplification module 152, and the sound generation module includes a first sound generation module 161 and a second sound generation module 162.

The first dynamic range control module 131, the first digital-to-analog conversion module 141, the first power amplification module 151 and the first sound generation module 161 are sequentially connected to finally generate a sound signal of a medium-low frequency band; meanwhile, the second dynamic range control module 132, the second digital-to-analog conversion module 142, the second power amplification module 152 and the second sounding module 162 are sequentially connected to finally send out a high-frequency band sound signal.

This embodiment divides the frequency of audio signal into two frequency channels, has both had the advantage of active electron frequency division, compromises high middle low frequency sound, can use less module realization again, reduces the sound generating mechanism cost, can also be through the dynamic range of control high frequency channel and middle low frequency channel signal simultaneously to improve the playback quality, protection user's hearing and sound production module 16.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A sound production device based on active electronic frequency division is characterized by comprising:

and the sounding module is connected with the power amplification module.

2. The active electronic frequency-division based sound production device according to claim 1, wherein the dynamic range control module comprises a plurality of dynamic range control modules, the digital-to-analog conversion module comprises a plurality of digital-to-analog conversion modules, the power amplification module comprises a plurality of power amplification modules, and the sound production module comprises a plurality of sound production modules.

3. The active electronic frequency-division based sound production device of claim 2, wherein the plurality of dynamic range control modules, the plurality of digital-to-analog conversion modules, the plurality of power amplification modules, and the plurality of sound production modules are connected in sequence.

4. The active electronic frequency-division based sound production device according to claim 1, wherein the signals of the at least two frequency bands are a combination of at least two frequency band signals of a low frequency signal, an intermediate frequency signal, a medium and low frequency signal, and a high frequency signal.

5. The active electronic frequency-division based sound production device according to claim 1, wherein the audio receiving module comprises an audio interface module;