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Method and device for separating heavy bass, computer equipment and storage medium

A separation method and subwoofer technology, applied in transducer circuits, sensors, signal processing, etc., can solve the problems of increasing integration difficulty, complex hardware structure, and expanding the volume of electronic equipment, so as to improve the listening experience, reduce hardware costs and The difficulty of integration and the effect of portability

Active Publication Date: 2018-09-04
SHANGHAI XIAODU TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the frequency division design method will lead to complex hardware structure, thereby increasing the hardware cost of electronic equipment, and at the same time expanding the volume of electronic equipment, thereby increasing the difficulty of integration, and it is difficult to meet the needs of portability and convenience.

Method used

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  • Method and device for separating heavy bass, computer equipment and storage medium
  • Method and device for separating heavy bass, computer equipment and storage medium
  • Method and device for separating heavy bass, computer equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] figure 1 It is a flow chart of a subwoofer separation method provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation of separating a subwoofer audio signal from an original time-domain audio signal. The method can be performed by a subwoofer separation device To execute, the device can be realized by software and / or hardware, and generally can be integrated in various audio playback electronic devices (typically, various types of speakers or other electronic devices equipped with speakers, etc.). Such as figure 1 As shown, the method includes the following operations:

[0034] S110. Perform low-pass filtering on the original time-domain audio signal to obtain a time-domain low-frequency signal component of the original time-domain audio signal.

[0035] Wherein, the original time-domain audio signal may be an unprocessed audio signal extracted from a sound source file.

[0036] In the embodiment of the present invention, afte...

Embodiment 2

[0049] Figure 2a It is a flow chart of a subwoofer separation method provided in Embodiment 2 of the present invention. This embodiment is embodied on the basis of the above-mentioned embodiments. Carry out Fourier inverse transform, and then obtain the specific implementation method of subwoofer time-domain audio signal. Correspondingly, such as Figure 2a As shown, the method of this embodiment may include:

[0050] S210. Perform low-pass filtering on the original time-domain audio signal to obtain a time-domain low-frequency signal component of the original time-domain audio signal.

[0051] S220. Perform Fourier transform on the time-domain low-frequency signal component, and convert the time-domain low-frequency signal component into a low-frequency frequency-domain signal.

[0052] In an optional embodiment of the present invention, the data form of the low frequency frequency domain signal X(k) is specifically: X(k)=a(k)+b(k)i; where a(k) is Real part, a(k)=Re(X(k)...

Embodiment 3

[0083] image 3 It is a schematic diagram of a subwoofer separation device provided in Embodiment 3 of the present invention, as image 3 As shown, the device includes: a signal filtering module 310, a signal transformation module 320, a gain control module 330, and a signal inverse transformation module 340, wherein:

[0084] A signal filtering module 310, configured to perform low-pass filtering on the original time-domain audio signal to obtain a time-domain low-frequency signal component of the original time-domain audio signal;

[0085] A signal transformation module 320, configured to perform Fourier transform on the time-domain low-frequency signal component, and convert the time-domain low-frequency signal component into a low-frequency frequency-domain signal;

[0086]A gain control module 330, configured to perform frequency-domain gain control on the low-frequency frequency-domain signal to obtain a spectrum energy signal;

[0087] A signal inverse transform modul...

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Abstract

The embodiments of the invention disclose a method and a device for separating heavy bass, audio equipment and a storage medium. The method comprises the steps of: performing low-pass filtering on anoriginal time domain audio signal to obtain a time domain low-frequency signal component of the original time domain audio signal; performing Fourier transform on the time domain low-frequency signalcomponent, and converting the time domain low-frequency signal component into a low frequency domain signal; performing frequency domain gain control on the low frequency domain signal to obtain a spectrum energy signal; performing inverse Fourier transform on the spectrum energy signal to obtain a heavy bass time domain audio signal; wherein the low pass filtering, the Fourier transform, the frequency domain gain control and the inverse Fourier transform are realized by a digital signal processing technology. The technical solution reduces the hardware cost and integration difficulty of the audio equipment, meets the requirements of portability and convenience, and improves the listening experience of audios played by the audio equipment.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of audio processing, and in particular to a subwoofer separation method, device, speaker equipment, and storage medium. Background technique [0002] A speaker is a hardware device commonly used in electronic equipment. Usually, in an electronic device with audio playback function, if there is only one single speaker, the single speaker will be designed as a full-band speaker, and the playback frequency range is theoretically full-band. However, in practical applications, due to the limitation of the volume of the audio box and the diameter of the speaker, it is almost difficult to realize the playback response of the full frequency band, which leads to the lack of fullness of the timbre of each frequency band and affects the listening experience. In order to improve the sound quality, the method adopted in the prior art is to carry out frequency division design to the sound box, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
CPCH04R3/00H04R2430/00
Inventor 邓滨宋晨枫
Owner SHANGHAI XIAODU TECHNOLOGY CO LTD
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