WO2023040515A1 - Procédé de commande audio et dispositif de lecture audio - Google Patents

Procédé de commande audio et dispositif de lecture audio Download PDF

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Publication number
WO2023040515A1
WO2023040515A1 PCT/CN2022/111115 CN2022111115W WO2023040515A1 WO 2023040515 A1 WO2023040515 A1 WO 2023040515A1 CN 2022111115 W CN2022111115 W CN 2022111115W WO 2023040515 A1 WO2023040515 A1 WO 2023040515A1
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Prior art keywords
speaker
audio
audio signal
playback device
speakers
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PCT/CN2022/111115
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English (en)
Chinese (zh)
Inventor
王三军
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Oppo广东移动通信有限公司
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Publication of WO2023040515A1 publication Critical patent/WO2023040515A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/301—Automatic calibration of stereophonic sound system, e.g. with test microphone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H04M1/72457—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to geographic location

Definitions

  • the present application relates to the technical field of audio control, in particular to an audio control method and an audio playback device.
  • Audio playback is one of the primary functions of electronic devices.
  • Embodiments of the present application provide an audio control method and an audio playback device.
  • the audio control method in the embodiment of the present application is applied to an audio playback device, the audio playback device includes a plurality of speakers, and the audio control method includes determining whether the audio signal contains position information, and the position information is used to communicate with the plurality of speakers associated with at least one of ; if so, playing the audio signal through the speaker associated with the location information.
  • An audio control method is applied to an audio playback device, and the audio playback device includes a plurality of speakers.
  • the audio control method includes determining position information in an audio signal, and the position information is used to communicate with the plurality of speakers. associated with at least one of the speakers; and playing the audio signal through the speaker associated with the location information.
  • the audio playback device in the embodiment of the present application includes a plurality of speakers and a processor, the processor is used to determine whether the audio signal contains position information, and the position information is used to associate with at least one of the plurality of speakers; and When the audio signal has the location information, play the audio signal through the speaker associated with the location information.
  • An audio playback device in another embodiment of the present application includes a plurality of speakers and a processor, the processor is used to determine position information in the audio signal, and the position information is used to associate with at least one of the plurality of speakers; and playing the audio signal through the speaker associated with the location information.
  • Fig. 1 is a schematic front view of an audio playback device in some embodiments of the present application.
  • Fig. 2 is a schematic diagram of the rear of an audio playback device in some embodiments of the present application.
  • Fig. 3 is a schematic flowchart of an audio control method in some embodiments of the present application.
  • Fig. 4 is a block diagram of an audio control device according to some embodiments of the present application.
  • 5 to 7 are schematic diagrams of scenarios of an audio control method in some embodiments of the present application.
  • Fig. 8 is a schematic flowchart of an audio control method in some embodiments of the present application.
  • Fig. 9 is a schematic diagram of connection between a processor and a computer-readable storage medium in some embodiments of the present application.
  • the audio control method of the present application is applied to an audio playback device, the audio playback device includes a plurality of speakers, and the audio control method includes: determining whether the audio signal contains position information, and the position information is used to associate with at least one of the plurality of speakers; if so, The audio signal is then played through the speaker associated with the location information.
  • playing the audio signal through a speaker associated with the location information includes: playing the audio signal with a predetermined playback parameter by the speaker associated with the location information.
  • the location information includes multiple preset orientations
  • the speakers associated with the location information play audio signals with predetermined playback parameters, including: controlling one or more speakers corresponding to the preset orientations based on a preset mapping table.
  • a speaker outputs an audio signal with predetermined playback parameters, so that the sound field of the audio playback device matches the preset orientation.
  • the audio control method further includes: if not, determining the speaker for playing the audio signal according to the posture information of the audio playback device.
  • the audio playback device has a first speaker, a second speaker, a third speaker and a fourth speaker
  • the first speaker and the second speaker are respectively located on the left and right sides of the audio playback device
  • the third speaker and the fourth speaker They are respectively located on the upper and lower sides of the audio playback device
  • the speakers for playing audio are determined according to the posture information of the audio playback device, including: when the posture information indicates that the audio playback device is in a vertical screen placement state, the audio signal is played through the first speaker and the second speaker ; Play audio signals through the third speaker and the fourth speaker when the posture information indicates that the audio playback device is placed in a landscape orientation.
  • determining the speaker for playing audio according to the attitude information of the audio playback device includes: acquiring the attitude information of the audio playback device, where the attitude information includes an attitude angle; and when the attitude angle is 0 degrees, controlling the first speaker and the The second loudspeaker outputs the left channel audio signal and the right channel audio signal respectively; When the attitude angle is 180 degrees, control the second speaker and the first speaker to output the left channel audio signal and the right channel audio signal respectively; when the attitude angle is 270 degrees, control the third speaker and the fourth speaker to output the left channel audio signal respectively and right channel audio signal.
  • the audio control method of the present application is applied to an audio playback device, the audio playback device includes a plurality of speakers, the audio control method includes: determining the position information in the audio signal, and the position information is used to associate with at least one of the plurality of speakers; The speaker associated with the location information plays the audio signal.
  • playing the audio signal through a speaker associated with the location information includes: playing the audio signal with a predetermined playback parameter by the speaker associated with the location information.
  • the audio playback device of the present application includes a plurality of loudspeakers and a processor, the processor is used to determine whether the audio signal contains position information, and the position information is used to associate with at least one of the plurality of loudspeakers; and when the audio signal has position information, by A speaker associated with the location information plays the audio signal.
  • the processor is further configured to play the audio signal with predetermined playback parameters through a speaker associated with the location information.
  • the processor when the audio signal does not have position information, the processor is further configured to determine the speaker for playing the audio signal according to the posture information of the audio playback device.
  • the audio playback device further includes an attitude sensor, and the attitude sensor is used to determine the attitude information.
  • the audio playback device includes a housing, and the housing may include multiple sub-housings, and the multiple speakers are respectively disposed in the multiple sub-housings.
  • a plurality of speakers are disposed around the housing.
  • the two opposing speakers adopt a symmetrical design.
  • the audio playback device includes a casing, the casing includes a top wall, a bottom wall, a first side wall, and a second side wall, and the number of speakers is four, and the four speakers are respectively arranged on the top wall, the bottom wall, and the bottom wall. wall, first side wall and second side wall.
  • the housing further includes opposite fronts and rears, and the audio playback device further includes a speaker disposed on the rear.
  • the top wall, the bottom wall, the first side wall, the second side wall and the back are all provided with sound holes, and the sound holes are located opposite to the speaker.
  • the audio playback device in the embodiment of the present application includes a plurality of speakers and a processor, the processor is used to determine the position information in the audio signal, and the position information is used to associate with at least one of the plurality of speakers;
  • the speaker plays the audio signal.
  • the processor is further configured to play the audio signal with predetermined playback parameters through a speaker associated with the location information.
  • an audio playback device 100 includes a casing 11 , a plurality of speakers 12 and a processor 13 .
  • the audio playback device 100 may be a mobile phone, a tablet computer, a display device, a notebook computer, a smart watch, a teller machine, a gate machine, a head-mounted display device, a game machine, and the like. As shown in FIG. 2 , the embodiment of the present application is described by taking the audio playback device 100 as a mobile phone as an example. It can be understood that the specific form of the audio playback device 100 is not limited to the mobile phone.
  • the casing 11 can also be used to install functional modules such as a display device, an imaging device, a power supply device, and a communication device of the audio playback device 100, so that the casing 11 provides protection against dust, drop, and water for the functional modules.
  • the housing 11 may include a plurality of sub-housings (not shown), and a plurality of loudspeakers 12 are respectively arranged in the plurality of sub-housings, and the sub-housings isolate the loudspeaker 12 from other functional components in the audio playback device 100 to prevent the audio from the loudspeaker 12 Vibration affects other functional parts.
  • the housing 11 includes a top wall 111 , a bottom wall 112 , a first side wall 113 , a second side wall 114 , a front side 115 and a back side 116 .
  • the top wall 111 is opposite to the bottom wall 112
  • the front side 115 is opposite to the back side 116
  • the first side wall 113 and the second side wall 114 connect the top wall 111 and the bottom wall 112
  • the first side wall 113 and The second side wall 114 connects the front side 115 and the back side 116 .
  • the top wall 111 , bottom wall 112 , first side wall 113 , second side wall 114 , front side 115 and back side 116 enclose an accommodating space 117 , and a plurality of speakers 12 and processors 13 are disposed in the accommodating space 117 .
  • a plurality of speakers 12 are arranged around the casing 11 , so that the sound field of the audio playback device 100 covers the surrounding space of the audio playback device 100 .
  • there are four speakers 12 which are respectively arranged on the top wall 111 , the bottom wall 112 , the first side wall 113 and the second side wall 114 of the audio playback device 100 .
  • the number of loudspeakers 12 can be eight, and every two loudspeakers 12 form a group, which are respectively arranged on the top wall 111, the bottom wall 112, the first side wall 113 and the second side wall of the audio playback device 100. 114 to improve audio playback.
  • the top wall 111, the bottom wall 112, the first side wall 113 and the second side wall 114 are all provided with a sound outlet 118, and the position of the sound outlet 118 is opposite to the speaker 12, so that the audio output from the speaker 12 can be directly from the corresponding outlet.
  • the output of the sound hole 118 shortens the propagation path of the audio in the casing 11 and reduces the loss of the audio.
  • the opposite two loudspeakers 12 adopt a symmetrical design, for example, the two loudspeakers 12 positioned at the top wall 111 and the bottom wall 112 adopt a symmetrical design (that is, the connection between the centers of the two loudspeakers 12 positioned at the top wall 111 and the bottom wall 112 line parallel to the first side wall 113 or the second side wall 114), the two speakers 12 located on the two side walls adopt a symmetrical design (that is, the two speakers 12 located on the first side wall 113 and the second side wall 114
  • the connecting line in the center is parallel to the top wall 111 or the bottom wall 112 ), and the multiple speakers 12 can be the same speaker 12 , that is, the audio output parameters of the multiple speakers 12 are the same.
  • a plurality of loudspeakers 12 can also adopt a symmetrical design, such as four loudspeakers 12 are respectively located in the middle of the top wall 111, the middle of the bottom wall 112 and the middle of the two side walls, that is to say, the four loudspeakers 12 After the centers are connected in sequence, a rhombus can be formed, and the four speakers 12 are all the same speaker 12, thereby ensuring the balance of audio output from multiple speakers 12 at the same time.
  • the sound field balance of the asymmetrical dual speakers 12 is poor, and the multiple speakers 12 of the symmetrical design allow the user to hold
  • the audio playback device 100 receives the sound fields of the plurality of speakers 12, the sound field is basically balanced.
  • a plurality of loudspeakers 12 also can adopt asymmetrical design, for example wherein one loudspeaker 12 is used as earpiece (general performance is poorer), when a plurality of loudspeakers 12 play audio frequency together, can reduce the performance of the loudspeaker 12 that is not as earpiece, In order to make the audio output performance of the plurality of speakers 12 basically consistent, so as to ensure the balance of the sound field.
  • the audio playback device 100 includes not only a plurality of speakers 12 arranged around the casing 11, but also a speaker 12 arranged on the back 116, and at the same time, a corresponding The sound hole 118 is provided, so that the sound field of the audio playback device 100 can cover the corresponding side of the back surface 116 .
  • the audio playback device 100 also includes a screen sound emitting component (not shown), which can make the sound emit from the front 115, so that the sound field of the audio playback device 100 can cover the corresponding side of the front 115.
  • the speaker 12 When the loudspeaker 12 is arranged on the back side 116, compared with being arranged on the edge of the casing 11 (such as the top wall 111, the bottom wall 112, the first side wall 113, and the second side wall 114), the speaker 12 is available for use by the edge of the casing 11.
  • the width of the installation is less affected, so that the volume cannot be too large, the space in the housing 11 is relatively large, and the volume of the sound cavity of the speaker 12 arranged on the back side 116 can be greater than that of the speaker 12 arranged on the edge of the housing 11.
  • the volume of the cavity so as to achieve a large sound cavity design, and improve the sound effect of the speaker 12 arranged on the back 116.
  • the sound cavity includes a front cavity and a rear cavity.
  • the volume of the front cavity of the speaker 12 arranged on the back side 116 can be larger than the volume of the front cavity of the speaker 12 arranged on the edge of the housing 11, for Improving the sound enhancement effect of the speaker 12 arranged on the back 116 can make the volume of the rear cavity of the speaker 12 arranged on the back 116 larger than that of the speaker 12 arranged on the edge of the housing 11 .
  • the audio control method of the embodiment of the present application is applied to the audio playback device 100 of any of the above embodiments, and the audio control method includes:
  • 011 Determine whether the audio signal includes position information for associating with at least one of the plurality of speakers 12;
  • the audio control device 10 in the embodiment of the present application is applied to an audio playback device 100 , and the audio control device 10 includes a determination module 01 and a first control module 02 .
  • the determination module 01 is used to determine whether the audio signal contains position information, and the position information is used to be associated with at least one of the plurality of speakers 12; the first control module 02 is used to play the audio signal through the speaker 12 associated with the position information . That is to say, step 011 can be executed by the determination module 01 , and step 012 can be executed by the first control module 02 .
  • the processor 13 of the audio playback device 100 of the embodiment of the present application is used to determine whether the audio signal contains position information, and the position information is used to associate with at least one of the plurality of speakers 12; and when the audio signal has position information, The audio signal is played through the speaker 12 associated with the location information. That is to say, step 011 may be executed by the processor 13 , and step 012 may be executed by the processor 13 in cooperation with multiple speakers 12 .
  • the processor 13 can identify the audio signal to determine whether the audio signal contains location information, and when the audio signal includes location information, it indicates the location where the audio signal requires output sound. Embody the sense of position of the sound. At this point, the processor 13 can first process the audio signal to generate multiple monophonic audio signals, for example, the processor 13 performs up-mixing processing on the audio signal to generate multiple monophonic audio signals, each monophonic Each channel audio signal corresponds to a piece of position information. The number of channels may be determined according to the type of position information included in the audio signal, or the number of channels may be a preset number of channels. Certainly, the processor 13 may not process the audio signal, but directly controls one or more speakers 12 associated with the location information to output the audio signal.
  • the audio signal in the audio playback device 100 always carries position information, and the processor 13 does not need to identify whether the audio signal contains position information, but only needs to obtain the position information in each audio signal, and control the correlation according to the position information. Connected speaker 12 to play.
  • the processor 13 can control one or more speakers 12 associated with the position information to play the audio signal.
  • the processor 13 controls each associated audio signal according to the position information of each monophonic audio signal in the audio signal.
  • the speakers 12 positioned on the left and right sides of the audio playback device 100 are respectively a first speaker 121 and a second speaker 122, and the speakers 12 positioned on the upper and lower sides of the audio playback device 100 are respectively are the third speaker 123 and the fourth speaker 124 .
  • the first speaker 121 is set on the first side wall 113
  • the second speaker 122 is set on the second side wall 114
  • the third speaker 123 is set on the top wall 111
  • the fourth speaker 124 is set on the bottom wall 112 .
  • the position information includes a plurality of preset orientations, and each preset orientation and the playback parameters (such as output intensity) of the corresponding loudspeaker 12 can be provided with a preset mapping relationship table.
  • each preset orientation and the playback parameters (such as output intensity) of the corresponding loudspeaker 12 can be provided with a preset mapping relationship table.
  • P in Table 1 is a predetermined output intensity, and the predetermined output intensity can be determined according to the volume set by the user.
  • the processor 13 controls the first speaker 121 to output the monophonic audio signal with a predetermined output intensity, and controls the second speaker 122 to the fourth speaker 124 to output the monophonic audio signal.
  • the output intensity of the monophonic audio signal is 0, that is, the second speaker 122 to the fourth speaker 124 are controlled not to output the monophonic audio signal.
  • the processor 13 controls the second speaker 122 to output the monophonic audio signal with a predetermined output intensity, while controlling the first speaker 121, the third speaker 123 and the The output intensity of the monophonic audio signal of the four speakers 124 is 0, that is, the first speaker 121 , the third speaker 123 and the fourth speaker 124 are controlled not to output the monophonic audio signal.
  • the processor 13 controls the first speaker 121 and the third speaker 123 to output the monophonic audio signal with a predetermined output intensity, while controlling the second speaker 122 and the third speaker 123 to output the monophonic audio signal.
  • the output intensity of the monophonic audio signal of the four speakers 124 is 0, that is, the second speaker 122 and the fourth speaker 124 are controlled not to output the monophonic audio signal.
  • the output intensity of each speaker 12 can be quickly determined by querying the preset mapping table through the position information of the audio signal, thereby improving the efficiency of audio control.
  • the output intensity of loudspeaker 12 can be realized by adjusting the output loudness of loudspeaker 12;
  • the mid-high frequency part in the audio signal has less influence on the sound field, therefore, when output intensity is adjusted, only the monophonic audio signal can be adjusted The gain of the low-frequency part in the middle, so as to realize the adjustment of the output intensity.
  • the audio control method, the audio control device 10 and the audio playback device 100 in the embodiment of the present application first determine whether the audio signal contains position information, and if there is position information, then process the audio signal to divide the audio signal into multiple and position information One-to-one corresponding monophonic audio signals, and then when playing the audio signals, adjust the output strength of multiple speakers 12 according to the position information corresponding to each monophonic audio signal, so that the sound field and position of the audio playback device 100 The information is matched, so that the sound has a strong sense of position and surround during playback, which can meet the needs of users and can adapt to scenes that require a high sense of position in audio playback.
  • the audio control method also includes:
  • the audio signal does not contain position information, process the audio signal to generate a left channel audio signal and a right channel audio signal, and obtain the attitude information of the device;
  • the audio control device 10 includes a processing module 03 , a second control module 04 and a third control module 05 .
  • the processing module 03 is used to process the audio signal when the audio signal does not contain position information, so as to generate the left channel audio signal and the right channel audio signal, and obtain the attitude information of the device;
  • the second control module 04 is used to indicate the When the audio playback device 100 is placed vertically, the first speaker 121 and the second speaker 122 are controlled to output the left channel audio signal and the right channel audio signal respectively;
  • the third control module 05 is used to place the audio playback device 100 horizontally when the posture information indicates , control the third speaker 123 and the fourth speaker 124 to output the left channel audio signal and the right channel audio signal respectively. That is to say, step 013 can be executed by the processing module 03 , step 014 can be executed by the second control module 04 , and step 015 can be executed by the third control module 05 .
  • the processor 13 is also configured to process the audio signal when the audio signal does not contain position information, to generate a left channel audio signal and a right channel audio signal, and obtain the attitude information of the device;
  • control the first speaker 121 and the second speaker 122 to output the left channel audio signal and the right channel audio signal respectively;
  • the posture information indicates that the audio playback device 100 is placed horizontally, control the third speaker 123 and the fourth speaker 124 respectively output the audio signal of the left channel and the audio signal of the right channel. That is to say, step 014 , step 015 and step 016 may be implemented by the processor 13 .
  • the processor 13 can directly process the audio signal into a left channel audio signal and a right channel audio signal.
  • audio signal (such as down-mixing the audio signal), and obtain the attitude information of the device, the attitude information of the audio playback device 100 can be determined by the detection data of the attitude sensor (such as gyroscope, accelerometer, etc.).
  • the processor 13 determines the speaker 12 for playing the audio signal according to the posture information. For example, if it is determined according to the attitude information that the audio playback device 100 is placed vertically (that is, the state shown in FIG. The left channel audio signal and the right channel audio signal are respectively output, thereby realizing stereo output, and since the audio playback device 100 is placed vertically, it means that the first side wall 113 and the second side wall 114 respectively correspond to the two sides of the human ear, Therefore, the audio signal of the left channel and the audio signal of the right channel are respectively outputted through the first speaker 121 and the second speaker 122, which can improve the stereo playback effect. If it is determined according to the attitude information that the audio playback device 100 is placed horizontally (i.e. the state shown in FIG.
  • the left channel audio signal can be output respectively through the third loudspeaker 123 and the fourth loudspeaker 124 of the top wall 111 and the bottom wall 112 and right channel audio signal, thereby realizing stereo output; to output the left channel audio signal and the right channel audio signal respectively, which can improve the stereo playback effect.
  • the processor 13 can determine the attitude angle of the audio playback device 100 according to the attitude information, such as As shown in Fig.
  • the processor 13 controls the first loudspeaker 121 and the second loudspeaker 122 to output the left channel audio signal and the right channel audio signal respectively; 5 shows that the attitude angle of the audio playback device 100 is 90 degrees, and the processor 13 controls the fourth speaker 124 and the third speaker 123 located on both sides of the audio playback device 100 to output the left channel audio signal and the right channel respectively.
  • Audio signal As shown in Figure 6, it is the state that the posture angle of audio playback device 100 is 180 degrees, and processor 13 controls the second loudspeaker 122 and the first loudspeaker 121 that are positioned at audio playback device 100 both sides to output left channel audio frequency respectively signal and the right channel audio signal; as shown in Figure 7, it is the state that the attitude angle of the audio playback device 100 is 270 degrees, and the processor 13 controls the third speaker 123 and the fourth speaker 124 to output the left channel audio signal and the right channel audio signal respectively. channel audio signal.
  • the left channel audio signal and the right channel audio signal can be controlled more accurately, and the stereo playback effect can be improved.
  • the attitude angle of the audio playback device 100 may not be 0 degree, 90 degree, 180 degree and 270 degree as mentioned above, but a degree between any two values. Therefore, the processor 13 can set each The attitude angle within the range of plus or minus 45 degrees of a degree is used as the degree for audio control. For example, take the attitude angle in the interval [-45°, 45°) as 0° for audio control, set the attitude angle in the interval [45°, 135°) as 90° for audio control, and set the attitude angle in the interval [135°, The attitude angle of 225 degrees) is regarded as 180 degrees for audio control, and the attitude angle in the interval [225 degrees, 315 degrees) is regarded as 270 degrees for audio control. In this way, audio control at any attitude angle can be realized.
  • the loudspeaker 12 may be blocked or even damaged, resulting in less sound or even no sound. For example, when the user holds the audio playback device 100, the speaker 12 may be blocked.
  • the speaker 12 can detect whether the output audio signal is abnormal to determine whether the speaker 12 is abnormal. For example, when the loudspeaker 12 is blocked, the reflection intensity of the left channel signal and the right channel signal in the sound cavity is relatively high. Therefore, whether the audio parameters of the audio signal output by the detection loudspeaker 12 is abnormal can determine whether the loudspeaker 12 exists. abnormal. If the loudness is greater than the predetermined loudness, it is determined that the speaker 12 is blocked, and when there is no loudness, it can be determined that the speaker 12 is damaged.
  • the output of the left channel audio signal and the right channel audio signal can be carried out through the speaker 12 that does not appear abnormal, such as when the first speaker 121 and/or the second speaker 122 are abnormal, through the first speaker 121 and/or the second speaker 122.
  • the three loudspeakers 123 and the fourth loudspeaker 124 respectively output the left channel audio signal and the right channel audio signal; A left channel audio signal and a right channel audio signal. In this way, the stereo output after the hole is plugged or damaged can be realized.
  • step 012 includes:
  • 0122 Determine the output intensity of each speaker 12 according to the distance corresponding to each speaker 12;
  • the first control module 02 is also used to obtain the distance between each speaker 12 and the position information; according to the distance corresponding to each speaker 12, determine the output intensity of each speaker 12; control each speaker 12 to The corresponding output intensity outputs a monaural audio signal so that the sound field of the audio playback device 100 matches the position information. That is to say, Step 0121 to Step 0123 can be executed by the first control module 02 .
  • the processor 13 is also used to obtain the distance between each speaker 12 and the position information; according to the corresponding distance of each speaker 12, determine the output intensity of each speaker 12; control each speaker 12 with a corresponding The output intensity outputs a monaural audio signal so that the sound field of the audio playback device 100 matches the position information. That is to say, step 0121 to step 0123 may be implemented by the processor 13 .
  • the processor 13 determines the output intensity of each speaker 12, it can first obtain the distance between each speaker 12 and the position corresponding to the position information, and then according to each speaker 12 and The distance of the position of the sound determines the output intensity of each speaker 12, the closer the distance is, the greater the output intensity is, and the farther the distance is, the smaller the output intensity is.
  • the processor 13 determines the output intensity of each speaker 12
  • the adjustment parameters of each speaker 12 can be determined respectively according to the distance between the position and each speaker 12, so that each speaker 12 output on the basis of the predetermined playback parameters, adjust the output intensity of each loudspeaker 12 by adjusting parameters, such as the distance from the position of the fourth loudspeaker 124, the first loudspeaker 121, the second loudspeaker 122 and the third loudspeaker 123 gradually increases, Then the adjustment parameter of the fourth loudspeaker 124 can be 1.5, the adjustment parameter of the first loudspeaker 121 is 0.5, and the second loudspeaker 122 and the fourth loudspeaker 124 can set the adjustment parameter to 0 because the distance between the second loudspeaker 122 and the fourth loudspeaker 124 is 0, that is, the second loudspeaker 122 and the second loudspeaker 122 and the fourth loudspeaker 124 are far away.
  • the four speakers 124 are not used to output the monophonic audio signal corresponding to the location information.
  • the distance corresponding to each loudspeaker 12 and the distance corresponding to the fourth loudspeaker 124 can be made a difference, if the difference is greater than a predetermined difference threshold (such as a predetermined difference
  • the threshold can be determined according to the distance between the speakers 12), then its adjustment parameter is set to 0, thereby improving the accuracy of sound position output.
  • an adjustment parameter is determined for each speaker 12 through the position information and the distance of each speaker 12, which can be Achieve more accurate and rich sound position output.
  • the processor 13 may further perform further processing on the audio signal output by the speaker 12, such as at least one of equalization processing, dynamic range compression, gain processing, and phase adjustment.
  • equalization processing is to adjust the timbre by gaining or attenuating one or more frequency bands of the audio signal; dynamic range compression can adjust the amplitude of the signal to make the sound sound softer or louder; gain processing According to the user's preference for audio in different frequency bands, specific frequency bands can be amplified to obtain audio playback effects that meet user needs, such as enhancing the low-frequency part of the audio signal to improve the bass effect; phase modulation can make The audio signals output by different loudspeakers 12 can reach the human ear at the same time after being played, so as to avoid the sound dragging phenomenon.
  • one or more non-transitory computer-readable storage media 300 containing a computer program 302 when the computer program 302 is executed by one or more processors 13, the processors 13 can Execute the detection method of any one of the above-mentioned embodiments.
  • the processors 13 are made to perform the following steps:
  • 011 Determine whether the audio signal contains position information, and the position information is used to instruct at least one of the plurality of speakers 12 to play the audio signal;
  • processors 13 may also perform the following steps:
  • the audio signal does not contain position information, process the audio signal to generate a left channel audio signal and a right channel audio signal, and obtain the attitude information of the device;

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Abstract

L'invention concerne un procédé de commande audio et un dispositif de lecture audio (100). Le procédé consiste à (011) déterminer si un signal audio contient des informations d'emplacement, les informations d'emplacement étant associées à au moins un haut-parleur parmi une pluralité de haut-parleurs (12) ; et (012) si tel est le cas, lire le signal audio au moyen du haut-parleur (12) associé aux informations d'emplacement.
PCT/CN2022/111115 2021-09-16 2022-08-09 Procédé de commande audio et dispositif de lecture audio WO2023040515A1 (fr)

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