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Audio signal processing stage, audio signal processing device and audio signal processing method

An audio signal processing and audio signal technology, applied in signal processing, frequency response correction, sensor components, etc., can solve problems such as attenuation of low-frequency spectrum and loss of low-frequency content

Active Publication Date: 2020-04-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Existing solutions for preventing loudspeaker saturation or overdrive effects have some disadvantages
It's worth noting that static cutoff filters tend to attenuate the low frequency spectrum more strongly than necessary
On the other hand, existing adaptive equalization methods may cause perceivable loss of low-frequency content

Method used

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  • Audio signal processing stage, audio signal processing device and audio signal processing method
  • Audio signal processing stage, audio signal processing device and audio signal processing method
  • Audio signal processing stage, audio signal processing device and audio signal processing method

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Embodiment Construction

[0039] The following description is made with reference to the accompanying drawings, which form a part of this invention and show by way of illustration specific aspects in which the invention may be practiced. It is to be understood that the invention may be placed in other aspects and structural or logical changes may be made without departing from the scope of the present invention. Accordingly, the following detailed description is not to be taken as limiting, but the scope of the present invention is defined by the appended claims.

[0040] For example, it is to be understood that a disclosure relating to a described method generally applies equally to a corresponding apparatus or system for performing the described method, and vice versa. For example, if certain method steps are described, a corresponding device may include means for performing the described method steps, even if such means are not explicitly described or illustrated in the figures.

[0041] In additio...

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Abstract

An input audio signal is separated into input audio signal components (X(k,b)). A set of two or more band branches provides output audio signal components (Y(k,b)). The set of band branches comprises one or more compressor branches Each compressor branch compresses a respective input audio signal component (X(k,b)) into a respective output audio signal component (Y(k,b)). A summed audio signal (y(t)) is generated by summing the output audio signal components (Y(k,b)). A residual audio signal (v(t)) is a difference between the input audio signal and the summed audio signal(y(t)) A virtual bass signal (w(t)) comprises one or more harmonics of the residual audio signal (v(t)). An output audio signal is generated by summing the summed audio signal (y(t)) and the virtual bass signal (w(t)).

Description

technical field [0001] The invention relates to the field of audio signal processing. In particular, the invention relates to an audio signal processing stage, an audio signal processing device and an audio signal processing method allowing an audio signal to be enhanced for reproduction by a loudspeaker. Background technique [0002] Many speakers, especially smaller ones, cannot accurately reproduce the low-frequency content of an incoming audio signal. The reason is that the excursion (ie displacement) of the eardrum is limited. In general, the sound pressure level L of a loudspeaker depends on the geometry of the loudspeaker and the frequency f of the electrical excitation signal according to the following relationship: [0003] [0004] where x m Indicates the excursion of the speaker's tympanic membrane, S m Indicates the area of ​​the eardrum of the loudspeaker, ρ 0 Indicates the air density, p 0 Indicates the reference sound pressure, usually equal to 20μPa....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R3/04H04R3/00
CPCH04R3/007H04R3/04H04R2430/03H04S2400/09
Inventor 克里斯托弗·富勒亚历克西斯·法夫罗彼得·格罗舍马丁·波罗尤尔根·盖格
Owner HUAWEI TECH CO LTD