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Electronic equipment, signal processing method and device

An electronic device and audio signal processing technology, applied in the field of acoustics, can solve problems such as sound leakage, negative impact on user experience, and reduce user experience, etc., to achieve the effect of reducing impact, taking into account appearance design, and offsetting sound leakage

Pending Publication Date: 2020-12-22
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0002] When an electronic device such as a mobile phone is in a call scene, when the sound signal enters the user's ear, the sound signal will be transmitted outside the ear through the vibration of the back cover, leakage of the auricle, or diffraction of the head, resulting in sound leakage, especially when the user is relatively When making a call in a quiet public place (such as a conference room or in an elevator), the sound leakage of the mobile phone can easily leak the privacy of the user, which has a great negative impact on the user experience and greatly reduces the user experience.

Method used

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  • Electronic equipment, signal processing method and device
  • Electronic equipment, signal processing method and device
  • Electronic equipment, signal processing method and device

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Embodiment 1

[0244] Exemplarily, in this embodiment, the length of the filter (or the length of the sound transfer function) N is 1, the number m of sound leakage positions is 4, the value of k traverses 1 to 4, and the 4 sound leakage positions are respectively It is located at four angles of 0 degrees, 90 degrees, 180 degrees and 270 degrees and the same distance.

[0245] The first formula: H=[h in h k ]==[0.6 0.3 0.5 0.25 0.01],

[0246] Among them, h in =[0.6],h k =[0.3 0.5 0.25 0.01]

[0247] The second formula: G=[g in g k ]==[0.7 0.35 0.45 0.15 0.02],

[0248] Among them, g in =[0.7],g k =[0.35 0.45 0.15 0.02]

[0249] The fourth formula: D=[1 0 0 0 0] T ,

[0250] Substituting H, G and D into the third formula yields the following result:

[0251]

[0252] Then according to the fifth formula, get R_1 and R_2:

[0253] Therefore, the coefficient of the talk filter is R_1=[-2.681], and the coefficient of the cancellation filter is R_2=[3.3061].

Embodiment 2

[0255] Exemplarily, in this embodiment, the length N of the filter (or the length of the sound transfer function) is 2, and the number m of sound leakage positions is 1, and the sound leakage positions are located at 90 degrees.

[0256] First formula: in,

[0257] Second formula: in,

[0258] The fourth formula: D=[1 1 0 0] T ,

[0259]

[0260] Substituting F, H, G and D into the fifth formula, the following results are obtained:

[0261]

[0262] Therefore, the coefficient of the talk filter is R_1=[1.58-8.34], and the coefficient of the cancellation filter is R_2=[1.9310.53].

[0263] After obtaining the coefficients of the call filter and the coefficients of the cancellation filter through the above method 300, continue to refer to Figure 4 , a talking filter 111 and a canceling filter 112 with corresponding coefficients and a sounding device 130 with two sounding units can be set in the electronic device 100, the talking filter 111 is electrically conn...

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Abstract

The embodiment of the invention provides electronic equipment, a signal processing method and device, a sound production device with two sound production units is arranged in the electronic equipment,a processor processes a first call audio signal to obtain two paths of sound signals, namely a second call audio signal and an offset audio signal. The first sounding unit is used for sending a callsound signal according to a second call audio signal, and the second sounding unit is used for sending a counteracting sound signal according to a counteracting audio signal, so that the counteractingsound signal and the call sound signal are mutually superposed outside the electronic equipment, and the sound intensity entering ears is not reduced as much as possible. Some signals, leaked out ofears, of the call sound signals can be counteracted through the counteracting sound signals, so that the sound leakage phenomenon of the electronic equipment is reduced, and the user experience is improved.

Description

technical field [0001] The present application relates to the field of acoustics, and more specifically, to an electronic device, a signal processing method and device. Background technique [0002] When an electronic device such as a mobile phone is in a call scene, when the sound signal enters the user's ear, the sound signal will be transmitted outside the ear through the vibration of the back cover, leakage of the auricle, or diffraction of the head, resulting in sound leakage, especially when the user is relatively When making a call in a quiet public place (such as a conference room or an elevator), the sound leakage of the mobile phone can easily leak the privacy of the user, which has a great negative impact on the user experience and greatly reduces the user experience. Contents of the invention [0003] The present application provides an electronic device capable of offsetting sound leakage. The electronic device can generate two sound signals, one sound signal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/03H04R3/04
CPCH04M1/03H04R3/00G10K11/178
Inventor 李英明施栋苏杰朱统于利刚秦仁轩叶千峰邓斌黎椿键
Owner HUAWEI TECH CO LTD
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