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Supper bass boosting method and system

A technology for subwoofer and low-frequency signals, applied in the field of subwoofer enhancement methods and systems, capable of solving the problems of saturated noise generated by audio signals, inability to produce subwoofer effects, and slow processing speed, so as to improve processing speed and enhance subwoofer enhancement effect , to avoid the effect of the conversion process

Active Publication Date: 2013-12-11
WUXI ZGMICRO ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

[0005] However, the existing subwoofer enhancement technology can easily make the audio signal produce saturated noise, so it cannot produce a good subwoofer effect
Moreover, the existing subwoofer enhancement technology is to perform FFT and IFFT processing on the entire audio signal, so the processing speed is relatively slow

Method used

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  • Supper bass boosting method and system
  • Supper bass boosting method and system
  • Supper bass boosting method and system

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Embodiment Construction

[0023] Embodiments of the present invention provide a subwoofer enhancement method and system, which are used to greatly increase the gain of low-frequency signals in the audio signal on the premise of avoiding saturation noise in the audio signal, thereby improving the subwoofer enhancement effect of the audio signal. Moreover, the processing speed can be greatly improved.

[0024] The embodiment of the present invention adopts filtering and variable sampling rate technology to extract the low-frequency part of the audio signal separately, and then transform the signal into the frequency domain through FFT at a lower sampling rate, so that the low-frequency part can be adjusted in more detail in each frequency band. Gain, so not only can greatly increase the gain of the low-frequency signal in the audio signal, thereby improving the subwoofer enhancement effect of the audio signal, but also can reduce the computational complexity. Finally, the enhanced low-frequency part is s...

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PUM

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Abstract

The invention discloses a supper bass boosting method and a system, which are used for improving the supper bass boosting effect of an audio-frequency signal and improving processing speed. The supper bass boosting method comprises the following steps of: carrying out low-pass filtering processing to the audio-frequency signal according to preset cut-off frequency, obtaining a time domain low-frequency signal from the audio-frequency signal, and converting the low-frequency signal into a frequency domain low-frequency signal; carrying out frequency band gain control to the frequency domain low-frequency signal which is then reduced into the time domain low-frequency signal and obtaining the low-frequency signal after the signal intensity is strengthened; and synthesizing the low-frequency signal after the signal intensity is strengthened and the audio-frequency signal and carrying out automatic gain control to the synthesized audio-frequency signal.

Description

technical field [0001] The invention relates to the technical field of information processing, in particular to a subwoofer enhancement method and system. Background technique [0002] Subwoofer enhancement technology is a technology used to enhance the low-frequency part of audio signals, such as enhancing the sound of low-frequency parts such as drums and bass in music. [0003] General speakers and headphones have a certain degree of low frequency loss, so the effect of subwoofer has become one of the important criteria for evaluating audio quality. [0004] The existing subwoofer enhancement technology uses equalization (EQ) technology, the principle of which is as follows: figure 1 As shown, that is, the audio signal is subjected to fast Fourier transform (FFT) after being processed by the analysis window, and then the frequency band (band) of the low frequency part is multiplied by a gain, and then undergoes inverse fast Fourier transform (IFFT), and finally synthesiz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R3/04H03G9/02
CPCH03G9/005
Inventor 张晨
Owner WUXI ZGMICRO ELECTRONICS CO LTD
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