Device and method for converting single-channel and double-channel audio signals

An audio signal, mono technology, applied in the direction of two-channel system, stereo system, electrical components, etc., can solve the problems of inadequate audio signal processing, lack of surround sound expressiveness, poor audio signal playback effect, etc.

Pending Publication Date: 2020-05-19
天域全感音科技有限公司
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  • Summary
  • Abstract
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Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the lack of expressiveness of surround sound and the lack of audio performance due to the incomplete processing of audio signals when converting monophonic audio signals into dual-channel audio signals in the prior art. The defect that the playback effect of the signal is relatively poor, thereby providing a conversion device and method for a single- and dual-channel audio signal

Method used

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  • Device and method for converting single-channel and double-channel audio signals
  • Device and method for converting single-channel and double-channel audio signals
  • Device and method for converting single-channel and double-channel audio signals

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Embodiment 1

[0029] An embodiment of the present invention provides a conversion device for single- and dual-channel audio signals, which can be applied to opera houses, choirs, home theaters, and other specific application scenarios that need to process audio signals to obtain better audio-visual experience, such as figure 1 As shown, the device includes: a frequency division unit 10, a phase adjustment unit, a phase difference supplementary unit 30, and a synthesis unit 40, wherein:

[0030]The frequency division unit 10 is used to perform frequency division processing on the monophonic audio signal input to the frequency division unit 10 according to a plurality of preset characteristic frequencies, so as to obtain a plurality of characteristic audio frequencies with each preset characteristic frequency as the center frequency Signal; in this embodiment, the frequency division unit 10 is used to separate the received sound signal according to preset frequencies to obtain an audio signal ...

Embodiment 2

[0052] The embodiment of the present invention provides a monophonic audio signal processing method, which can be applied to opera houses, choirs, home theaters and other specific application scenarios that need to process audio signals to obtain better audio-visual experience, such as Image 6 shown, including:

[0053] Step S11: Acquire a monophonic audio signal; in this embodiment, the audio signal can be acquired through a dedicated audio signal interface or an audio signal acquisition device.

[0054] Step S12: Perform frequency division processing on the monophonic audio signal according to the monophonic audio signal and a plurality of preset characteristic frequencies to obtain a plurality of characteristic audio signals with each preset plurality of characteristic frequencies as center frequencies; For detailed implementation content, refer to the relevant description of the frequency division unit 10 in the above device embodiment.

[0055] Step S13: According to th...

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Abstract

The invention discloses a conversion device and method for single-channel and double-channel audio signals, and the device comprises a frequency division unit which is used for carrying out the frequency division of the single-channel audio signals according to a plurality of preset characteristic frequencies, and obtaining a plurality of characteristic audio signals; a phase adjusting unit whichis used for adjusting the phases of the characteristic audio signals according to a preset phase adjusting matrix, and respectively copying the characteristic audio signals after phase adjustment to obtain a plurality of left and right channel characteristic audio signals; a phase difference supplementing unit which is used for translating each left channel characteristic audio signal and each right channel characteristic audio signal along different directions to obtain a plurality of translated left channel characteristic audio signals and translated right channel characteristic audio signals; a synthesis unit which comprises a first synthesis subunit, a second synthesis subunit and a third synthesis subunit, and is used for synthesizing the plurality of translated left channel characteristic audio signals to obtain a left channel audio synthesis signal; and a second synthesis subunit which is used for synthesizing the plurality of translated right channel characteristic audio signals to obtain a right channel audio synthesis signal.

Description

technical field [0001] The invention relates to the field of audio processing, in particular to a conversion device and method for single- and dual-channel audio signals. Background technique [0002] With the improvement of living standards and the rapid development of the entertainment media industry, audio players such as home digital theaters are becoming more and more popular. In the device, it is mainly for channel conversion of digital audio signals, such as microphones and loudspeakers. However, in existing audio signal channel converters, when a monophonic audio signal is converted into a two-channel audio signal, Inadequate processing of the audio signal will result in a lack of expressiveness of the surround sound and a poor playback effect of the audio signal. Contents of the invention [0003] Therefore, the technical problem to be solved by the present invention is to overcome the lack of expressiveness of surround sound and the lack of audio performance due...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S7/00H04S1/00
CPCH04S1/00H04S1/007H04S7/307H04S2420/07
Inventor 赵安国林舸
Owner 天域全感音科技有限公司
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