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CN-121985273-A - Electronic device and sound pickup method

CN121985273ACN 121985273 ACN121985273 ACN 121985273ACN-121985273-A

Abstract

The application provides electronic equipment and a sound pickup method, which belong to the technical field of terminals, wherein the electronic equipment comprises a directional microphone array, the directional microphone array at least comprises a first directional microphone and a second directional microphone, and the sound pickup enhancement direction of the first directional microphone is mutually perpendicular to the sound pickup enhancement direction of the second directional microphone; the direction in which the gain of the acoustic signal of the directional microphone array is maximum is a target direction, and the target direction is determined by the first directional microphone and the second directional microphone together. According to the scheme, the array structure of the first directional microphone and the second directional microphone is combined with the back-end algorithm, so that pickup enhancement in a specific direction can be realized.

Inventors

  • ZHANG PENG
  • YU ZHENGBIAO
  • DAI LONGHUI

Assignees

  • 荣耀终端股份有限公司

Dates

Publication Date
20260505
Application Date
20241030

Claims (20)

  1. 1. An electronic device is characterized by comprising a directional microphone array, wherein the directional microphone array at least comprises a first directional microphone and a second directional microphone, and the pickup enhancement direction of the first directional microphone is mutually perpendicular to the pickup enhancement direction of the second directional microphone; The direction with the largest acoustic signal gain of the directional microphone array is a target direction, and the target direction is determined by the first directional microphone and the second directional microphone together.
  2. 2. The electronic device of claim 1, wherein the first directional microphone is disposed in an upper left corner of the electronic device and the second directional microphone is disposed in an upper right corner of the electronic device; the first directional microphone comprises a first sound inlet and a second sound inlet which are communicated, and the second directional microphone comprises a third sound inlet and a fourth sound inlet which are communicated; The first sound inlet is arranged on the top side surface of the electronic equipment, the second sound inlet is arranged on the left side surface of the electronic equipment, the third sound inlet is arranged on the top side surface of the electronic equipment, and the fourth sound inlet is arranged on the right side surface of the electronic equipment; The connecting line direction of the first sound inlet and the second sound inlet is the pickup enhancement direction of the first directional microphone, and the connecting line direction of the third sound inlet and the fourth sound inlet is the pickup enhancement direction of the second directional microphone.
  3. 3. The electronic device of claim 2, wherein the first directional microphone is disposed in an upper left corner of the display portion and the second directional microphone is disposed in an upper right corner of the display portion, or wherein the first directional microphone is disposed in an upper left corner of the host portion and the second directional microphone is disposed in an upper right corner of the host portion when the electronic device is a notebook computer including the display portion and the host portion.
  4. 4. The electronic device of claim 2 or 3, wherein any one of the first sound inlet, the second sound inlet, the third sound inlet, and the fourth sound inlet is a hole or a micro-slit.
  5. 5. The electronic device of claim 1, wherein the directional microphone array is disposed at a top corner of the electronic device, wherein the first directional microphone comprises a first sound inlet and a second sound inlet in communication, and wherein the directional microphone comprises the second sound inlet and a third sound inlet in communication; The first sound inlet is arranged on the side surface of the top of the electronic equipment, the second sound inlet is arranged at the junction of the top of the electronic equipment and the first side surface, and the third sound inlet is arranged on the first side surface of the electronic equipment, wherein the first side surface is a left side surface when the top angle is the upper left corner, and the first side surface is a right side surface when the top angle is the upper right corner; The connecting line direction of the first sound inlet and the second sound inlet is the pickup enhancement direction of the first directional microphone, and the connecting line direction of the second sound inlet and the third sound inlet is the pickup enhancement direction of the second directional microphone.
  6. 6. The electronic device according to claim 5, wherein when the electronic device is a notebook computer including a display portion and a host portion, the directional microphone array is provided at a vertex angle of the display portion or the directional microphone array is provided at a vertex angle of the host portion.
  7. 7. The electronic device of claim 5 or 6, wherein any one of the first sound inlet, the second sound inlet, and the third sound inlet is a hole or a micro-slit.
  8. 8. The electronic device of claim 1, wherein the directional microphone array is disposed on a rear camera Deco comprised by the electronic device, the first directional microphone comprises a first sound inlet and a second sound inlet that are in communication, and the directional microphone comprises the second sound inlet and a third sound inlet that are in communication; if the rear camera Deco has a thickness, the first sound inlet and the third sound inlet are both arranged on the side surface of the rear camera Deco; if the rear camera Deco has no thickness, the first sound inlet and the third sound inlet are arranged on the side edges of the rear camera Deco; The second sound inlet is arranged on a plane where the rear camera Deco is located, and the plane is parallel to a screen of the electronic equipment; The connecting line direction of the first sound inlet and the second sound inlet is the pickup enhancement direction of the first directional microphone, and the connecting line direction of the second sound inlet and the third sound inlet is the pickup enhancement direction of the second directional microphone.
  9. 9. The electronic device of claim 8, wherein if the rear camera Deco has a thickness, the first sound inlet and the third sound inlet are both disposed on sides of the rear camera Deco, comprising: If the rear camera Deco has a thickness, the first sound inlet is arranged on the upper side surface of the rear camera Deco, and the third sound inlet is arranged on the left side surface or the right side surface of the rear camera Deco; if the rear camera Deco has no thickness, the first sound inlet and the third sound inlet are both arranged on the side edges of the rear camera Deco, including: If the rear camera Deco has no thickness, the first sound inlet is arranged on the upper side edge of the rear camera Deco, and the third sound inlet is arranged on the left side edge or the right side edge of the rear camera Deco.
  10. 10. The electronic device of claim 9, wherein if the rear camera Deco has a thickness, the first sound inlet is disposed on an upper side of the rear camera Deco, comprising: the first sound inlet is a hole and is arranged on the upper side surface of the rear camera Deco; The first sound inlet is a micro-slit, and is arranged on the edge of the upper side of the rear camera Deco, which is close to one side of the screen, or on the edge of the upper side of the rear camera Deco, which is far away from one side of the screen.
  11. 11. The electronic device of claim 8 or 9, wherein if the rear camera Deco has a thickness, the third sound inlet is disposed on a left side or a right side of the rear camera Deco, comprising: The third sound inlet is a hole and is arranged on the left side surface or the right side surface of the rear camera Deco; The third sound inlet is a micro-slit, and is arranged on the edge of the left side or the right side surface of the rear camera Deco, which is close to one side of the screen, or on the edge of the left side or the right side surface of the rear camera Deco, which is far away from one side of the screen.
  12. 12. The electronic device of claim 1, wherein the first directional microphone comprises a first sound inlet and a second sound inlet in communication, and the second directional microphone comprises a third sound inlet and a fourth sound inlet in communication; The first sound inlet, the second sound inlet and the third sound inlet are all arranged on the side surface of the top of the electronic equipment, and the third sound inlet is arranged between the first sound inlet and the second sound inlet; the fourth sound inlet is arranged on the upper side surface of the rear camera Deco, which is arranged on the electronic equipment, of the first sound inlet; The line direction of the first sound inlet and the second sound inlet is the pickup enhancement direction of the first directional microphone, and the line direction of the third sound inlet and the fourth sound inlet is the pickup enhancement direction of the second directional microphone.
  13. 13. The electronic device of claim 12, wherein any one of the first sound inlet, the second sound inlet, the third sound inlet, and the fourth sound inlet is a hole or a micro-slot.
  14. 14. The electronic device of any one of claims 1-13, wherein when the first directional microphone or the second directional microphone is a 8-shaped directional microphone, both acoustic signals bidirectionally transmitted in the pickup enhancement direction are enhanced, and when the first directional microphone or the second directional microphone is a heart-shaped or super-heart-shaped directional microphone, both acoustic signals unidirectionally transmitted in the pickup enhancement direction are enhanced.
  15. 15. The electronic device of claim 14, wherein the bidirectional direction of the pickup enhancement direction comprises any one of a left-right direction, an up-down direction, and an oblique up-down direction of the electronic device; the unidirectional direction of the pickup enhancement direction includes any one of a left direction, a right direction, an upward direction, and an obliquely upward direction.
  16. 16. The pickup method is characterized by being applied to an electronic device, wherein the electronic device comprises a directional microphone array, the directional microphone array comprises a first directional microphone and a second directional microphone, the pickup enhancement direction of the first directional microphone is perpendicular to the pickup enhancement direction of the second directional microphone, the direction with the largest acoustic signal gain of the directional microphone array is a target direction, the target direction is determined by the first directional microphone and the second directional microphone together, and the directions comprise: Acquiring an acoustic signal picked up by the first directional microphone and an acoustic signal picked up by the second directional microphone; transforming the acoustic signals picked up by the first directional microphone and the acoustic signals picked up by the second directional microphone in the time domain into the frequency domain by utilizing a short-time Fourier algorithm; And acquiring a filter coefficient according to the sound signal of the first directional microphone transformed into the frequency domain and the sound signal of the second directional microphone transformed into the frequency domain, wherein the filter coefficient enables the direction with the maximum gain of the filtered sound signal to be the target direction.
  17. 17. The method of claim 16, wherein the target direction is a direction closer to a top of the display portion if the directional microphone array is disposed on the display portion and is a direction closer to the top of the host portion if the directional microphone array is disposed on the host portion when the electronic device is a notebook computer including the display portion and the host portion.
  18. 18. The pickup method of claim 16, wherein the target direction is a direction closer to a top of the mobile phone when the electronic device is a tablet computer or a mobile phone.
  19. 19. The sound pickup method according to any one of claims 16 to 18, wherein, based on the acoustic signal of the first directional microphone transformed into the frequency domain and the acoustic signal of the second directional microphone transformed into the frequency domain, comprising: performing dereverberation processing on the acoustic signal of the first directional microphone transformed into the frequency domain; Performing dereverberation processing on the acoustic signal of the second directional microphone transformed into the frequency domain, wherein the dereverberation processing is used for removing environmental noise in the acoustic signal transformed into the frequency domain; and acquiring the filter coefficients according to the sound signals after the dereverberation processing.
  20. 20. The sound pickup method of claim 19, wherein obtaining the filter coefficients from the dereverberated acoustic signal comprises: Performing amplitude compensation and phase compensation on the sound signal of the first directional microphone in the frequency domain after the dereverberation processing and the sound signal of the second directional microphone in the frequency domain after the dereverberation processing; The amplitude compensation is used for compensating the amplitude loss of the acoustic signals caused by the equipment structure and the environmental object of the electronic equipment, and the phase compensation is used for enabling the phase difference between the compensated acoustic signals of the first directional microphone and the compensated acoustic signals of the second directional microphone to be a preset phase difference; and acquiring the filter coefficient according to the compensated sound signals of the first directional microphone and the compensated sound signals of the second directional microphone.

Description

Electronic device and sound pickup method Technical Field The application relates to the technical field of terminals, in particular to electronic equipment and a sound pickup method. Background The pickup technique is a technique widely used in various audio and video scenes, and picks up sound mainly by a microphone array. At present, in electronic equipment, an omnidirectional microphone or an omnidirectional microphone array is generally arranged to pick up sound, however, the response degree of the omnidirectional microphone to sound signals in all directions in space is kept consistent, and the enhancement of sound in a specific direction in space can only be realized by means of an array algorithm. For large conferences, lectures and other scenes, sound in a specific direction is required to be picked up at a long distance, and the pick-up distance of an array of omnidirectional microphones is short, so that the requirement cannot be met; Moreover, because the array algorithm has poor frequency consistency, the gain effect of acoustic signals with different frequencies is different, namely 'acoustic dyeing phenomenon', thereby affecting the sound quality of pickup. Therefore, how to solve the above problems has become a subject to be studied. Disclosure of Invention The embodiment of the application provides electronic equipment and a sound pickup method, which can realize directional sound pickup enhancement and improve sound pickup effect by combining the structural design of a plurality of directional microphones with a back-end algorithm. In a first aspect, an electronic device is provided, including a directional microphone array, where the directional microphone array includes at least a first directional microphone and a second directional microphone, a pickup enhancement direction of the first directional microphone is perpendicular to a pickup enhancement direction of the second directional microphone, and a direction in which an acoustic signal gain of the directional microphone array is maximum is a target direction, where the target direction is determined by the first directional microphone and the second directional microphone together. The application designs the structures of the directional microphones to form the directional microphone array, and then combines the signal processing module at the rear end to perform post-processing on the sound signals, thereby adjusting the enhancement direction of the directional microphone array and further realizing the enhancement of directional pickup. It should be understood that arranging a plurality of directional microphones in XY configuration, that is, the enhancement directions of a plurality of directional microphones may be the X direction and the Y direction perpendicular to each other, and by adjusting the pick-up weight ratio of the directional microphones enhancing the X direction and the Y direction, the pick-up enhancement direction may be adaptively adjusted, the pick-up effect may be effectively improved, the scene where the pick-up can be adapted is wider, and the user experience may be improved. In addition, the increased directional microphone array may be compatible with the overall architecture of the device with little impact on the appearance of the device. With reference to the first aspect, in some implementations of the first aspect, the first directional microphone is disposed at an upper left corner of the electronic device, the second directional microphone is disposed at an upper right corner of the electronic device, the first directional microphone includes a first sound inlet and a second sound inlet that are communicated, the second directional microphone includes a third sound inlet and a fourth sound inlet that are communicated, the first sound inlet is disposed at a top side of the electronic device, the second sound inlet is disposed at a left side of the electronic device, the third sound inlet is disposed at a top side of the electronic device, the fourth sound inlet is disposed at a right side of the electronic device, a connection line direction of the first sound inlet and the second sound inlet is a pickup enhancement direction of the first directional microphone, and a connection line direction of the third sound inlet and the fourth sound inlet is a pickup enhancement direction of the second directional microphone. As shown in fig. 8 in embodiment 1 of the present application, for example. It should be understood that the connecting line direction of the first sound inlet and the second sound inlet is perpendicular to the connecting line direction of the third sound inlet and the fourth sound inlet. In the embodiment of the application, a plurality of directional microphones can be added on the electronic equipment. Taking two directional microphones as examples, two sound inlets of one directional microphone can be distributed at the top and the left side of the electronic equipment, two sound inl