CN110798580B - Noise removing method and device for remote multi-party voice conference and electronic equipment - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
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- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
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- G—PHYSICS
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- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
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Abstract
The invention provides a noise removing method and a device for a remote multi-party voice conference, wherein the method comprises the following steps: acquiring first voice information X sent by a target speaking end, wherein the first voice information X comprises target voice information a of the target speaking end and first background voice information b0 of other speaking ends; acquiring second background voice information b1 sent by a background voice acquisition end, wherein the second background voice information b1 is ma + b0/n, m is a first attenuation coefficient of the target voice information a, and n is a second attenuation coefficient of the first background voice information b 0; calculating attenuated first target voice information a1 according to the second background voice information and the first voice information; and restoring the attenuated target voice information a1 to the target voice information a according to a preset rule and playing. The invention has the advantage of avoiding the background noise from interfering the sound of the target speaker.
Description
Technical Field
The invention relates to the field of voice processing, in particular to a noise removing method and device for a remote multi-party voice conference and electronic equipment.
Background
With the development of communication technology, especially the mature application of 4G technology and 5G technology. Remote communication is also increasingly easier. Many companies are now equipped with remote conference halls for remote voice conferencing by employees or clients located in different areas. However, in the conference process, because there are many people, there may be a background noise that the sound of the non-target speaker affects the listening of the target voice by the receiver, and the user experience is poor.
Disclosure of Invention
The embodiment of the invention provides a noise removing method and device for a remote multi-party voice conference and electronic equipment, and has the beneficial effect of avoiding background noise from interfering the sound of a target speaker.
The invention provides a noise removing method for a remote multi-party voice conference, which comprises the following steps:
acquiring first voice information X sent by a target speaking end, wherein the first voice information X comprises target voice information a of the target speaking end and first background voice information b0 of other speaking ends;
acquiring second background voice information b1 sent by a background voice acquisition end, wherein the second background voice information b1 is ma + b0/n, m is a first attenuation coefficient of the target voice information a, and n is a second attenuation coefficient of the first background voice information b 0;
calculating attenuated first target voice information a1 according to the second background voice information and the first voice information;
and restoring the attenuated target voice information a1 to the target voice information a according to a preset rule and playing.
In the method for removing noise of a remote multiparty voice conference according to the embodiment of the present invention, the target speech terminal and the background voice collecting terminal are disposed opposite to each other.
In the method for removing noise in a remote multiparty voice conference according to the embodiment of the present invention, the step of calculating attenuated first target voice information a1 according to the second background voice information and the first voice information includes:
performing amplitude reduction processing on the second background speech information b1 according to a preset second attenuation coefficient n to obtain a third background speech b2, wherein b2 is nma + b 0;
and calculating attenuated first target voice information a1 according to the third background voice and the first voice information, wherein a1 is a-nma.
In the method for removing noise in a remote multiparty voice conference according to the embodiment of the present invention, the step of restoring and playing the attenuated target voice message a1 to the target voice message a according to a preset rule includes:
calculating an amplification factor according to the sound loudness of the first voice message and the sound loudness of the second background voice message b 1;
and restoring the target voice information a1 to the target voice information a according to the amplification coefficient and playing.
In the method for removing noise in a remote multiparty voice conference according to the embodiment of the present invention, the step of restoring and playing the attenuated target voice message a1 to the target voice message a according to a preset rule includes:
and acquiring an average amplification coefficient, and restoring the target voice information a1 to the target voice information a according to the average amplification coefficient and playing the target voice information a.
The present invention also provides a noise removing apparatus for a remote multiparty voice conference, comprising:
a first obtaining module, configured to obtain first voice information X sent by a target speech end, where the first voice information X includes target voice information a of the target speech end and first background voice information b0 of other speech ends;
a second obtaining module, configured to obtain second background speech information b1 sent by a background speech acquisition end, where the second background speech information b1 is ma + b0/n, where m is a first attenuation coefficient of the target speech information a, and n is a second attenuation coefficient of the first background speech information b 0;
a calculating module, configured to calculate attenuated first target speech information a1 according to the second background speech information and the first speech information;
and the restoring module is used for restoring the attenuated target voice information a1 to the target voice information a according to a preset rule and playing the target voice information a.
In the noise removing device for a remote multiparty voice conference according to the embodiment of the present invention, the target speech terminal and the background speech acquisition terminal are disposed opposite to each other.
In the noise removing apparatus for a remote multiparty voice conference according to an embodiment of the present invention, the calculation module includes:
an amplitude reduction unit, configured to perform amplitude reduction processing on the second background speech information b1 according to a preset second attenuation coefficient n to obtain a third background speech b2, where b2 is nma + b 0;
a first calculating unit, configured to calculate attenuated first target speech information, where a1 is a1 ═ a-nma, according to the third background speech and the first speech information.
In the noise removing apparatus for a remote multiparty voice conference according to an embodiment of the present invention, the restoring module includes:
a second calculating unit, configured to calculate an amplification factor according to the sound loudness of the first speech information and the sound loudness of the second background speech information b 1;
and the restoring unit is used for restoring the target voice information a1 to the target voice information a according to the amplification coefficient and playing the target voice information a.
The invention also provides an electronic device comprising a processor and a memory, wherein the memory stores a computer program, and the processor is used for any one of the methods by calling the computer program stored in the memory.
As can be seen from the above, the present invention obtains the first voice information X sent by the target speech end, where the first voice information X includes the target voice information a of the target speech end and the first background voice information b0 of other speech ends; acquiring second background voice information b1 sent by a background voice acquisition end, wherein the second background voice information b1 is ma + b0/n, m is a first attenuation coefficient of the target voice information a, and n is a second attenuation coefficient of the first background voice information b 0; calculating attenuated first target voice information a1 according to the second background voice information and the first voice information; restoring the attenuated target voice information a1 to the target voice information a according to a preset rule and playing; therefore, the background noise is removed, and the method has the beneficial effect of avoiding the background noise from interfering the sound of the target speaker.
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FIG. 1 is a flow chart of a method of noise removal for a remote multi-party voice conference in an embodiment of the present invention;
fig. 2 is a block diagram of a noise removing apparatus for a remote multiparty voice conference in an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
Referring to fig. 1, fig. 1 is a flowchart illustrating a noise removal method for a remote multiparty voice conference according to an embodiment of the present invention. The noise removing method for the remote multi-party voice conference comprises the following steps:
s101, first voice information X sent by a target speaking end is obtained, wherein the first voice information X comprises target voice information a of the target speaking end and first background voice information b0 of other speaking ends.
Because there are many people in the conference place, when the user at the target speaking end speaks, the users at the other speaking ends also speak, and the speaking voices uttered by the users at the other speaking user ends are collected by the target speaking end to form the first background voice information in the first voice information X.
S102, second background voice information b1 sent by a background voice collecting end is obtained, wherein the second background voice information b1 is ma + b0/n, m is a first attenuation coefficient of the target voice information a, and n is a second attenuation coefficient of the first background voice information b 0.
And the target speech end and the background speech acquisition end are arranged back to back. The background voice collecting end faces the other people and faces away from the speaker, so the collected second background voice information b1 includes background voice information with stronger sound intensity than the first background voice information b0 and attenuated target voice information ma with less sound intensity than the target voice information a. The first attenuation coefficient and the second attenuation coefficient are empirical values calculated through multiple tests.
S103, calculating attenuated first target voice information a1 according to the second background voice information and the first voice information.
In this step, attenuation processing needs to be performed on the background voice information portion in the second background voice information, so that the amplitude of the first background voice information in the first voice information is equal to that of the background voice information portion in the second background voice information, and then background voice removing operation is performed.
Specifically, in some embodiments, this step S103 may include the following sub-steps:
s1031, performing amplitude reduction processing on the second background speech information b1 according to a preset second attenuation coefficient n to obtain a third background speech b2, where b2 is nma + b 0;
s1032, calculating the attenuated first target speech information a1 according to the third background speech b2 and the first speech information x, wherein a1 is a-nma.
S104, restoring the attenuated target voice information a1 to the target voice information a according to a preset rule and playing.
In this step, approximate recovery may be performed by an empirical value, and accurate recovery may be performed by a detection result.
In some embodiments, this step S104 includes: calculating an amplification factor according to the sound loudness of the first voice message and the sound loudness of the second background voice message b 1; and restoring the target voice information a1 to the target voice information a according to the amplification coefficient and playing.
In some embodiments, the step S104 may include: and acquiring an average amplification coefficient, and restoring the target voice information a1 to the target voice information a according to the average amplification coefficient and playing the target voice information a.
Of course, it will be appreciated that both of these recovery methods have certain errors.
As can be seen from the above, the present invention obtains the first voice information X sent by the target speech end, where the first voice information X includes the target voice information a of the target speech end and the first background voice information b0 of other speech ends; acquiring second background voice information b1 sent by a background voice acquisition end, wherein the second background voice information b1 is ma + b0/n, m is a first attenuation coefficient of the target voice information a, and n is a second attenuation coefficient of the first background voice information b 0; calculating attenuated first target voice information a1 according to the second background voice information and the first voice information; restoring the attenuated target voice information a1 to the target voice information a according to a preset rule and playing; therefore, the background noise is removed, and the method has the beneficial effect of avoiding the background noise from interfering the sound of the target speaker.
Referring to fig. 2, fig. 2 is a block diagram of a noise removing apparatus for a remote multiparty voice conference according to some embodiments of the present invention, the apparatus including: a first acquisition module 201, a second acquisition module 202, a calculation module 203, and a recovery module 204.
The first obtaining module 201 is configured to obtain first voice information X sent by a target speech end, where the first voice information X includes target voice information a of the target speech end and first background voice information b0 of other speech ends;
because there are many people in the conference place, when the user at the target speaking end speaks, the users at the other speaking ends also speak, and the speaking voices uttered by the users at the other speaking user ends are collected by the target speaking end to form the first background voice information in the first voice information X.
The second obtaining module 202 is configured to obtain second background speech information b1 sent by a background speech acquiring end, where the second background speech information b1 is ma + b0/n, where m is a first attenuation coefficient of the target speech information a, and n is a second attenuation coefficient of the first background speech information b 0;
and the target speech end and the background speech acquisition end are arranged back to back. The background voice collecting end faces the other people and faces away from the speaker, so the collected second background voice information b1 includes background voice information with stronger sound intensity than the first background voice information b0 and attenuated target voice information ma with less sound intensity than the target voice information a. The first attenuation coefficient and the second attenuation coefficient are empirical values calculated through multiple tests.
The calculating module 203 is configured to calculate the attenuated first target speech information a1 according to the second background speech information and the first speech information.
The background voice information part in the second background voice information needs to be attenuated, so that the amplitude of the first background voice information in the first voice information is equal to that of the background voice information part in the second background voice information, and then the background voice removing operation is performed.
Specifically, the calculation module 203 includes: an amplitude reduction unit, configured to perform amplitude reduction processing on the second background speech information b1 according to a preset second attenuation coefficient n to obtain a third background speech b2, where b2 is nma + b 0;
a first calculating unit, configured to calculate attenuated first target speech information, where a1 is a1 ═ a-nma, according to the third background speech and the first speech information.
The restoring module 204 is configured to restore the attenuated target speech information a1 to the target speech information a according to a preset rule and play the target speech information a.
The recovery module 204 includes: a second calculating unit, configured to calculate an amplification factor according to the sound loudness of the first speech information and the sound loudness of the second background speech information b 1;
and the restoring unit is used for restoring the target voice information a1 to the target voice information a according to the amplification coefficient and playing the target voice information a.
As can be seen from the above, the present invention obtains the first voice information X sent by the target speech end, where the first voice information X includes the target voice information a of the target speech end and the first background voice information b0 of other speech ends; acquiring second background voice information b1 sent by a background voice acquisition end, wherein the second background voice information b1 is ma + b0/n, m is a first attenuation coefficient of the target voice information a, and n is a second attenuation coefficient of the first background voice information b 0; calculating attenuated first target voice information a1 according to the second background voice information and the first voice information; restoring the attenuated target voice information a1 to the target voice information a according to a preset rule and playing; therefore, the background noise is removed, and the method has the beneficial effect of avoiding the background noise from interfering the sound of the target speaker.
The invention also provides an electronic device comprising a processor and a memory. The processor is electrically connected with the memory. The processor is a control center of the electronic equipment, connects various parts of the whole server by using various interfaces and lines, executes various functions of the electronic equipment and processes data by running or calling a computer program stored in the memory and calling data stored in the memory, thereby integrally monitoring the electronic equipment.
In this embodiment, a processor of the electronic device loads instructions corresponding to processes of one or more computer programs into a memory according to the following steps, and the processor executes the computer programs stored in the memory, so as to implement various functions: acquiring first voice information X sent by a target speaking end, wherein the first voice information X comprises target voice information a of the target speaking end and first background voice information b0 of other speaking ends; acquiring second background voice information b1 sent by a background voice acquisition end, wherein the second background voice information b1 is ma + b0/n, m is a first attenuation coefficient of the target voice information a, and n is a second attenuation coefficient of the first background voice information b 0; calculating attenuated first target voice information a1 according to the second background voice information and the first voice information; and restoring the attenuated target voice information a1 to the target voice information a according to a preset rule and playing.
The present invention also provides a storage medium having a computer program stored therein, which, when run on a computer, causes the computer to perform the method of any of the above embodiments, thereby implementing various functions: acquiring first voice information X sent by a target speaking end, wherein the first voice information X comprises target voice information a of the target speaking end and first background voice information b0 of other speaking ends; acquiring second background voice information b1 sent by a background voice acquisition end, wherein the second background voice information b1 is ma + b0/n, m is a first attenuation coefficient of the target voice information a, and n is a second attenuation coefficient of the first background voice information b 0; calculating attenuated first target voice information a1 according to the second background voice information and the first voice information; and restoring the attenuated target voice information a1 to the target voice information a according to a preset rule and playing.
As can be seen from the above, the present invention obtains the first voice information X sent by the target speech end, where the first voice information X includes the target voice information a of the target speech end and the first background voice information b0 of other speech ends; acquiring second background voice information b1 sent by a background voice acquisition end, wherein the second background voice information b1 is ma + b0/n, m is a first attenuation coefficient of the target voice information a, and n is a second attenuation coefficient of the first background voice information b 0; calculating attenuated first target voice information a1 according to the second background voice information and the first voice information; restoring the attenuated target voice information a1 to the target voice information a according to a preset rule and playing; therefore, the background noise is removed, and the method has the beneficial effect of avoiding the background noise from interfering the sound of the target speaker.
In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (5)
1. A noise removing method for a remote multiparty voice conference is characterized by comprising the following steps:
acquiring first voice information X sent by a target speaking end, wherein the first voice information X comprises target voice information a of the target speaking end and first background voice information b0 of other speaking ends; the speaking voice sent by the users of other speaking user sides is collected by the target speaking side to form first background voice information in the first voice information X;
acquiring second background voice information b1 sent by a background voice acquisition end, wherein the second background voice information b1= ma + b0/n, m is a first attenuation coefficient of the target voice information a, and n is a second attenuation coefficient of the first background voice information b 0; the collected second background voice information b1 comprises background voice information with sound loudness stronger than that of the first background voice information b0 and attenuated target voice information ma with sound intensity smaller than that of the target voice information a;
calculating attenuated first target voice information a1 according to the second background voice information and the first voice information; the step of calculating the attenuated first target speech information a1 according to the second background speech information and the first speech information includes:
performing amplitude reduction processing on the second background voice information b1 according to a preset second attenuation coefficient n to obtain a third background voice b2, wherein b2= nma + b 0;
calculating attenuated first target voice information according to the third background voice and the first voice information, wherein a1= a-nma; wherein the first background voice information in the first voice information and the background voice information in the third background voice information are partially equal in amplitude;
and restoring the attenuated first target voice information a1 to the target voice information a according to a preset rule and playing.
2. The method of claim 1, wherein the target speaker and the background voice capture are disposed opposite to each other.
3. A noise removing apparatus for a remote multiparty voice conference, comprising:
a first obtaining module, configured to obtain first voice information X sent by a target speech end, where the first voice information X includes target voice information a of the target speech end and first background voice information b0 of other speech ends; the speaking voice sent by the users of other speaking user sides is collected by the target speaking side to form first background voice information in the first voice information X;
a second obtaining module, configured to obtain second background speech information b1 sent by a background speech acquisition end, where b1= ma + b0/n, where m is a first attenuation coefficient of the target speech information a, and n is a second attenuation coefficient of the first background speech information b 0; the collected second background voice information b1 comprises background voice information with sound loudness stronger than that of the first background voice information b0 and attenuated target voice information ma with sound intensity smaller than that of the target voice information a;
a calculating module, configured to calculate attenuated first target speech information a1 according to the second background speech information and the first speech information; the calculation module comprises:
an amplitude reduction unit, configured to perform amplitude reduction processing on the second background speech information b1 according to a preset second attenuation coefficient n to obtain a third background speech b2, where b2= nma + b 0;
a first calculating unit, configured to calculate attenuated first target speech information according to the third background speech and the first speech information, where a1= a-nma; wherein the first background voice information in the first voice information and the background voice information in the third background voice information are partially equal in amplitude;
and the restoring module is used for restoring the attenuated first target voice information a1 to the target voice information a according to a preset rule and playing the target voice information a.
4. The apparatus as claimed in claim 3, wherein the target speaker and the background voice capturing peer are disposed opposite to each other.
5. An electronic device, comprising a processor and a memory, the memory having stored therein a computer program, the processor being configured to execute the method of any one of claims 1 to 2 by calling the computer program stored in the memory.
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| KR101651588B1 (en) * | 2010-02-04 | 2016-08-26 | 삼성전자주식회사 | Method and Apparatus for removing noise signal from input signal |
| CN104050969A (en) * | 2013-03-14 | 2014-09-17 | 杜比实验室特许公司 | Space comfortable noise |
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