radio device

Abstract

A sound recording device includes a housing, a directional microphone, and an omnidirectional microphone. The housing defines a first sound recording channel, a second sound recording channel, and a third sound recording channel that are spaced apart from each other. The directional microphone is disposed within the housing and located between the first and second sound recording channels. The directional microphone includes a first pickup portion facing the first sound recording channel and a second pickup portion opposite to the first pickup portion and facing the second sound recording channel. The omnidirectional microphone is disposed within the housing and faces the third sound recording channel. This reduces acoustic interference during the sound recording process of the directional and omnidirectional microphones, thereby improving environmental perception and speech intelligibility.

Claims

1. A sound receiving device, comprising: a housing defining a first sound receiving channel, a second sound receiving channel, and a third sound receiving channel spaced apart from each other; a directional microphone disposed within the housing and located between the first sound receiving channel and the second sound receiving channel, the directional microphone including a first pickup portion facing the first sound receiving channel and a second pickup portion opposite to the first pickup portion and facing the second sound receiving channel; and an omnidirectional microphone disposed within the housing and facing the third sound receiving channel.

2. The radio receiver as claimed in claim 1, wherein, The directional microphone and the omnidirectional microphone are each a microelectromechanical microphone.

3. The radio receiver as claimed in claim 1, wherein, The housing includes an outer surface, on which the first and second sound channels are formed. The sound receiving device also includes a protective component disposed on the outer surface. The protective component includes two porous elements corresponding to the first and second sound channels, respectively, and the mesh counts of the porous elements are different.

4. The radio receiver as claimed in claim 3, wherein, The protective assembly also includes a first fixing piece for fixing the porous elements to the outer surface, an elastic buffer pad located on the side of the porous elements opposite to the first fixing piece, a second fixing piece for fixing the elastic buffer pad to the porous elements, and a protective piece disposed on the side of the elastic buffer pad opposite to the second fixing piece.

5. The radio receiver as claimed in claim 1, wherein, The first and second microphone channels are arranged in opposite directions and each is L-shaped, with the length of the second microphone channel being greater than the length of the first microphone channel.

6. The radio receiver as claimed in claim 5, wherein, The housing includes an outer surface, the first sound-receiving channel has a first channel segment formed on the outer surface, and a second channel segment connected to one end of the first channel segment opposite to the outer surface and perpendicular to the first channel segment and corresponding to the first pickup unit, the second sound-receiving channel has a third channel segment formed on the outer surface, and a fourth channel segment connected to one end of the third channel segment opposite to the outer surface and perpendicular to the third channel segment and corresponding to the second pickup unit, the third sound-receiving channel is formed on the outer surface and spaced between the first channel segment and the third channel segment.

7. The radio receiving device as claimed in claim 6 further includes a protective component disposed on the outer surface, the protective component including a first porous element corresponding to the first channel segment of the first radio receiving channel and a second porous element corresponding to the third channel segment of the second radio receiving channel, the mesh count of the first porous element being greater than the mesh count of the second porous element.

8. The radio receiver as claimed in claim 7, wherein, The first porous element also corresponds to the third sound receiving channel. The protective assembly further includes a first fixing piece for fixing the first porous element and the second porous element to the outer surface, an elastic buffer pad located on the side of the first porous element and the second porous element opposite to the first fixing piece, a second fixing piece for fixing the elastic buffer pad to the first porous element and the second porous element, and a protective piece disposed on the side of the elastic buffer pad opposite to the second fixing piece. The first fixing piece, the second fixing piece, the elastic buffer pad and the protective piece each form a first sound hole corresponding to the first sound receiving channel, a second sound hole corresponding to the second sound receiving channel, and a third sound hole corresponding to the third sound receiving channel.

9. The radio apparatus as claimed in any one of claims 1 to 8, wherein, The housing includes a first housing, a second housing, and a cover. The first housing has a first chamber for accommodating the directional microphone and a first sound guide hole communicating with the first chamber and corresponding to the first pickup unit. The second housing is sealed to the first housing and has a second chamber for accommodating the omnidirectional microphone and a second sound guide hole corresponding to the second pickup unit. The cover is sealed to the first housing and the second housing. The cover has a third sound reception channel communicating with the second chamber and a first sound inlet hole and a second sound inlet hole respectively spaced apart on two opposite sides of the third sound reception channel. The first sound inlet hole communicates with the first sound guide hole and the two together constitute the first sound reception channel. The second sound inlet hole communicates with the second sound guide hole and the two together constitute the second sound reception channel.

10. The radio receiver as claimed in claim 9, wherein, Both the first housing and the second housing are made of elastic material. The first sound guide hole and the second sound guide hole are arranged in opposite directions and each is L-shaped. The length of the second sound guide hole is greater than the length of the first sound guide hole.

11. The radio receiver as claimed in claim 9, wherein, The first housing also forms a first open slot communicating with the side of the first chamber opposite to the first sound guide hole, and a first positioning slot communicating with one side of the second chamber. The second housing also forms a second positioning slot communicating with the side of the second chamber opposite to the first positioning slot, and a second open slot communicating with the second chamber and located between the first positioning slot and the second positioning slot. The radio receiving device also includes a flexible circuit board, which includes a first electrical connection segment, a second electrical connection segment, an extension segment, and an exposed segment. The first electrical connection segment is housed in the first open slot and is held by the first housing and the second housing. The first electrical connection segment is electrically connected to... The directional microphone has a through hole that communicates with the second sound guide and corresponds to the second pickup part. The second electrical connection segment is housed in the second chamber, the first positioning groove and the second positioning groove and is electrically connected to the omnidirectional microphone. The two opposite ends of the second electrical connection segment are respectively positioned in the first positioning groove and the second positioning groove. The extension segment bends and extends from one side of the second electrical connection segment and is perpendicular to the second electrical connection segment. The extension segment is housed in the second open groove. The exposed segment bends and extends from the side of the extension segment opposite to the second electrical connection segment and is connected to the first electrical connection segment. The exposed segment is perpendicular to the extension segment and the first electrical connection segment and is exposed outside the housing.

12. The radio receiving apparatus as claimed in claim 1, wherein, The second microphone channel is U-shaped, and its length is greater than that of the first microphone channel.

13. The radio receiving apparatus as claimed in claim 12, wherein, The housing includes an outer surface, on which the first and third sound-receiving channels are formed. The second sound-receiving channel has a first channel segment formed on the outer surface, a second channel segment connected to one end of the first channel segment opposite to the outer surface and perpendicular to the first channel segment, and a third channel segment connected to one end of the second channel segment opposite to the first channel segment, perpendicular to the second channel segment and corresponding to the second pickup unit. The first channel segment is spaced between the first and third sound-receiving channels.

14. The radio receiving device as claimed in claim 13 further includes a protective component disposed on the outer surface, the protective component including a first porous element corresponding to the first channel segment of the second radio receiving channel and a second porous element corresponding to the first radio receiving channel, the mesh count of the first porous element being greater than the mesh count of the second porous element.

15. The radio receiving apparatus as claimed in claim 14, wherein, The first porous element also corresponds to the third sound receiving channel. The protective assembly further includes a first fixing piece for fixing the first porous element and the second porous element to the outer surface, an elastic buffer pad located on the side of the first porous element and the second porous element opposite to the first fixing piece, a second fixing piece for fixing the elastic buffer pad to the first porous element and the second porous element, and a protective piece disposed on the side of the elastic buffer pad opposite to the second fixing piece. The first fixing piece, the second fixing piece, the elastic buffer pad and the protective piece each form a first sound hole corresponding to the first sound receiving channel, a second sound hole corresponding to the second sound receiving channel, and a third sound hole corresponding to the third sound receiving channel.

16. The radio receiving apparatus as claimed in any one of claims 1 to 4, 12 to 15, wherein, The housing includes a first housing, a second housing, and a cover. The first housing has a chamber for accommodating the directional microphone and the omnidirectional microphone, and a sound guide hole communicating with the chamber and corresponding to the second pickup unit. The cover is sealed to the first housing and has a first sound receiving channel and a third sound receiving channel communicating with the chamber, and a sound inlet hole spaced between the first sound receiving channel and the third sound receiving channel. The sound inlet hole communicates with the sound guide hole, and the two together constitute the second sound receiving channel. The second housing is sealed to the first housing and closes the end of the sound guide hole opposite to the sound inlet hole.

17. The radio receiver as claimed in claim 16, wherein, Both the first housing and the second housing are made of elastic material. The sound guide hole is U-shaped and its length is greater than that of the first sound receiving channel.

18. The radio receiver as claimed in claim 16, wherein, The first housing has a positioning post located within the chamber. The microphone also includes a flexible circuit board, which includes an electrical connection segment and an exposed segment. The electrical connection segment is housed within the chamber and has a socket portion, and a first electrical connection portion and a second electrical connection portion respectively connected to two opposite sides of the socket portion. The socket portion forms a positioning hole through which the positioning post passes. The first electrical connection portion and the second electrical connection portion are electrically connected to the directional microphone and the omnidirectional microphone, respectively.

19. The radio receiving apparatus as claimed in claim 1, wherein, The length of the second radio channel is greater than the length of the first radio channel.

20. The recording device according to any one of claims 1 to 8, 12 to 15, further comprising a flexible circuit board disposed within the housing and partially exposed outside the housing, the flexible circuit board being electrically connected to the directional microphone and the omnidirectional microphone.

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