CN215818583U - Low-frequency dynamic compensation device of sound box - Google Patents
Low-frequency dynamic compensation device of sound box Download PDFInfo
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- CN215818583U CN215818583U CN202121942905.2U CN202121942905U CN215818583U CN 215818583 U CN215818583 U CN 215818583U CN 202121942905 U CN202121942905 U CN 202121942905U CN 215818583 U CN215818583 U CN 215818583U
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Abstract
The utility model discloses a low-frequency dynamic compensation device of a sound box, which comprises: the input module is used for receiving digital audio information; the low-frequency dynamic adjusting module is connected with the input module and is used for receiving the audio information of the input module, distinguishing low-frequency audio signals and enhancing the output of the low-frequency audio signals; the loudspeaker system dynamically adjusts sound low frequency through the arrangement of the low frequency adjusting module, meets good sound psychology audibility of a user, makes up the defects of loudspeaker design, does not damage the loudspeaker, enables the loudspeaker to restore low frequency large dynamics when the volume of the loudspeaker is small, keeps sound balance when the volume of the loudspeaker is large, is more convenient for the user to use, and can also enable the sound box equipment to play the best quality without too much experience and professional knowledge.
Description
Technical Field
The utility model relates to the technical field of audio compensation of sound boxes, in particular to a low-frequency dynamic compensation device of a sound box.
Background
With the development of mobile portable devices, the appearance of the sound box is more and more miniaturized. Internal speakers suffer from physical design size limitations, and small speakers have poor or no ability to reproduce low frequency sound signals. The low-frequency playback capability is one of the important indicators for measuring the performance of a loudspeaker system and plays a crucial role in sound perception. The low frequencies of the loudspeaker system directly influence the sense of soundness and the sense of space of the sound acoustically. According to the psychology theory of auditory sensation, the sound needs different bass at different sound pressure levels. How to dynamically reproduce acoustic low-frequency signals using small loudspeakers is an important issue in the design of a high-performance audio system. The traditional solution is to adopt an equalization adjustment amplifying circuit to directly enhance the low-frequency signal, and this way leads to low speaker efficiency, serious distortion of audio signal and even burning out the speaker when the system works at a larger volume.
The portable small-size loudspeaker has the advantages that the defect of insufficient low-frequency sound perception of the mobile portable small-size loudspeaker is overcome, and meanwhile distortion to sound signals is avoided. And the low-frequency good hearing of the loudspeaker is realized. Therefore, a low-frequency dynamic compensation device of the sound box is developed.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to provide a low-frequency dynamic compensation device of a sound box, which can dynamically adjust the low frequency of sound, meet the good psychoacoustic audiences of users and make up the defects in loudspeaker horn design.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
a low frequency dynamic compensation device of a sound box comprises:
the input module is used for receiving digital audio information;
the low-frequency dynamic adjusting module is connected with the input module and is used for receiving the audio information of the input module, distinguishing low-frequency audio signals and enhancing the output of the low-frequency audio signals;
and the output module is connected to the low-frequency dynamic adjustment module and used for executing the audio information after the transmission processing.
The preferred real-time scheme of the low-frequency dynamic compensation device for the sound box, provided by the utility model, further comprises a power amplifier module, wherein the power amplifier is connected with the output module and is used for receiving the information of the output module and outputting the amplified audio.
The device also comprises a Bluetooth module, wherein the Bluetooth module is connected to the low-frequency dynamic adjusting module and is used for providing digital sound source signals for the low-frequency dynamic adjusting module through wireless Bluetooth.
The device also comprises a control module which is connected to the low-frequency dynamic adjusting module and is used for adjusting various parameters of the low-frequency dynamic adjusting module.
The preferred real-time scheme of the low-frequency dynamic compensation device for the sound box is that the input module is divided into a wired input module connected to the low-frequency dynamic adjustment module.
The low frequency dynamic compensation device of the sound box according to the present invention is preferably a real-time solution, wherein the low frequency dynamic adjustment module comprises a filter connected to the input module and used for extracting the low frequency signal of the sound, an energy integration detector connected to the filter and used for detecting the signal intensity, a gain controller connected to the energy integration detector and used for controlling the intensity of the enhanced sound source signal, and a mixer respectively connected to the gain controller and the filter and used for mixing the processed low frequency signal with the audio signal of other frequency domains.
Compared with the prior art, the utility model has the beneficial effects that:
1. this device makes speaker system realize dynamic adjustment sound low frequency through the setting of low frequency adjusting module, satisfies the good sound psychology sense of hearing of user, remedies the defect in the loudspeaker design, does not damage loudspeaker simultaneously for the big developments of speaker reduction low frequency when little volume, big volume keep sound balanced, and the user uses more portably, also can let audio amplifier equipment performance best quality under the condition that need not too much experience and professional knowledge.
2. According to the technical scheme, the device has good compatibility and expansibility through the arrangement of the control module, various loudspeaker boxes and loudspeaker systems can be matched through the arrangement of parameters, and when the loudspeaker parameters of the loudspeaker systems are changed, the parameter arrangement of the module can be directly adjusted, so that the device is quickly suitable for the development of new products.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:
FIG. 1 is a schematic block diagram of a low frequency dynamic compensation apparatus of a sound box according to the present invention;
FIG. 2 is a block diagram of the adjusting module of the low frequency dynamic compensation device of a sound box according to the present invention;
FIG. 3 is a low frequency dynamic adjustment effect curve diagram of the low frequency dynamic compensation device of a sound box of the present invention;
fig. 4 is a circuit diagram of a low frequency dynamic compensation device of a sound box according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Fig. 1-4 show a real-time mode and a schematic block diagram of an embodiment of a low frequency dynamic compensation device for a sound box according to the present invention, and the present invention is described in detail with reference to fig. 1-4.
A low frequency dynamic compensation device of a sound box comprises:
the input module is used for receiving digital audio information, specifically, the input module is divided into a wired input module connected to the low-frequency dynamic adjustment module, and the input module adopts a standard 3.5mm audio interface;
the low-frequency dynamic adjusting module is used for receiving the audio information of the input module, distinguishing and enhancing the low-frequency audio signals and outputting the low-frequency audio signals, and particularly, the low-frequency dynamic adjusting module is connected with the input module and comprises a filter, an energy integration detector, a gain controller and a mixer, wherein the filter is connected with the input module and used for extracting sound low-frequency signals, the energy integration detector is connected with the filter and used for detecting the signal intensity, the gain controller is connected with the energy integration detector and used for controlling and enhancing the intensity of sound source signals, the mixer is respectively connected with the gain controller and the filter and used for mixing the processed low-frequency signals with other frequency domain audio signals, the frequency range of the filter is 20Hz-300Hz, and the gain control range of the gain controller is 0 dB-16 dB;
the output module is used for executing the audio information after the transmission processing, and specifically, the output module is connected to the low-frequency dynamic adjustment module.
With reference to fig. 1 to 4, the low frequency dynamic compensation device of the sound box according to the present embodiment specifically operates as follows: after the audio signal is input into the low-frequency dynamic adjusting module, the frequency domain information of the audio signal is obtained through short-time Fourier transform, the low-frequency signal of the signal is extracted from the filter, the frequency range of the filter is 20Hz-300Hz, the central frequency and the quality factor Q value can be set by using the control module according to the parameters of the loudspeaker system, then the signal volume level is calculated through the energy integration detector, the gain controller calculates the required gain through the volume level and increases the low-frequency component of the signal, the input signal level corresponding to the gain value can be set by the volume level threshold parameter in the module, the threshold comprises a high threshold and a low threshold, (the low threshold is set to be-100 dB-20 dB, the high threshold is set to be-20 dB-0dB), when the input audio signal is lower than the low threshold, the gain controller applies larger gain to the input signal, when the input sound signal is higher than the high threshold value, the gain controller stops applying the gain to the input signal so as to keep the low-frequency psychology audibility balance when the volume is large, and the gain control range of the gain controller is 0 dB-16 dB. The mixer carries out the aliasing to the low frequency signal after increasing and other frequency domain signals of audio frequency, restores complete sound signal to whole system real time dynamic adjustment audio amplifier sound low frequency, when audio signal volume value is than lower, the speaker system demonstrates the big dynamic range of low frequency, when audio signal volume value is than higher, the full frequency channel of speaker system is balanced, makes audio amplifier speaker system remain throughout in good psychology developments listening sense operating condition.
In this embodiment, still include the power amplifier module, the output module is being connected to the power amplifier for carry out the audio frequency after receiving the information output of output module and amplifying, during the use, the audio signal after handling is carried for the power amplifier module, strengthens the signal and gives sound production devices such as loudspeaker for the sound production through the power amplifier module.
In this embodiment, still include bluetooth module, bluetooth module is connected to low frequency dynamic adjustment module for provide digital sound source signal through wireless bluetooth to low frequency dynamic adjustment module, be favorable to transmitting audio information through wireless mode, reduce the influence that the wire rod curls and coils.
In this embodiment, the device further includes a control module connected to the low-frequency dynamic adjustment module and used for adjusting various parameters of the low-frequency dynamic adjustment module, which is beneficial to adjusting parameters for different devices.
While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the disclosed embodiments of the utility model may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. A low frequency dynamic compensation device of a sound box is characterized by comprising:
the input module is used for receiving digital audio information;
the low-frequency dynamic adjusting module is connected with the input module and is used for receiving the audio information of the input module, distinguishing low-frequency audio signals and enhancing the output of the low-frequency audio signals;
and the output module is connected to the low-frequency dynamic adjustment module and used for executing the audio information after the transmission processing.
2. The device of claim 1, further comprising a power amplifier module, wherein the power amplifier module is connected to the output module, and is configured to receive the information from the output module and output the amplified audio.
3. The apparatus of claim 2, further comprising a bluetooth module, wherein the bluetooth module is connected to the low frequency dynamics adjustment module, and is configured to provide a digital audio source signal to the low frequency dynamics adjustment module through wireless bluetooth.
4. The device of claim 3, further comprising a control module, wherein the control module is connected to the low frequency dynamic adjustment module and is configured to adjust parameters of the low frequency dynamic adjustment module.
5. The device of claim 4, wherein the input module is a wired input module connected to the low frequency dynamic adjustment module.
6. The apparatus of claim 5, wherein the low frequency dynamics adjustment module comprises a filter connected to the input module for extracting the low frequency signal of the sound, an energy integration detector connected to the filter for detecting the signal intensity, a gain controller connected to the energy integration detector for controlling the intensity of the enhanced sound source signal, and a mixer connected to the gain controller and the filter for mixing the processed low frequency signal with other frequency domain audio signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121942905.2U CN215818583U (en) | 2021-08-18 | 2021-08-18 | Low-frequency dynamic compensation device of sound box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121942905.2U CN215818583U (en) | 2021-08-18 | 2021-08-18 | Low-frequency dynamic compensation device of sound box |
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| Publication Number | Publication Date |
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| CN215818583U true CN215818583U (en) | 2022-02-11 |
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| CN202121942905.2U Active CN215818583U (en) | 2021-08-18 | 2021-08-18 | Low-frequency dynamic compensation device of sound box |
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2021
- 2021-08-18 CN CN202121942905.2U patent/CN215818583U/en active Active
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