TWI602442B - Speaker generating mixed harmonic sound and electronic device using the same - Google Patents

Description

a speaker that produces a mixed overtone and an electronic device using the same

The present invention relates to a speaker and an electronic device using the same, and more particularly to a speaker for generating a mixed overtone and an electronic device using the same.

With the advancement of technology, various electronic devices continue to evolve. Many portable electronic devices are equipped with speakers to play music or sound effects. However, in order to respond to the user's demand for easy carrying of the electronic device, the electronic device is becoming thinner, and the internal speaker must also be miniaturized and thinned.

The industry has found that when the speaker is oriented toward miniaturization and thinning, the tone performance is usually dull and the sound quality is relatively monotonous, making the music playing lacking harmony and softness.

The invention relates to a loudspeaker for generating mixed-tone overtones and an electronic device using the same, which utilizes the design of the mixing tube, so that the sound waves can generate overtones after mixing the mixing tubes to increase the harmony and softness.

According to a first aspect of the invention, a loudspeaker is proposed. The speaker comprises a first speaker, a first speaker unit, a first sound tube, a second speaker, a second speaker unit, a second sound tube and a mixing tube. The first horn unit includes a first diaphragm. The first diaphragm faces the first speaker. The first sound tube is connected to the first speaker. The second horn unit includes a second diaphragm. The second diaphragm faces the second speaker. The second sound tube is connected to the second speaker. The mixing tube connects the first sound tube and the second sound tube to generate an overtone.

According to a second aspect of the invention, an electronic device is presented. The electronic device includes a speaker and an audio processing circuit. The speaker comprises a first speaker, a first speaker unit, a first sound tube, a second speaker, a second speaker unit, a second sound tube and a mixing tube. The first horn unit includes a first diaphragm. The first diaphragm faces the first speaker. The first sound tube is connected to the first speaker. The second horn unit includes a second diaphragm. The second diaphragm faces the second speaker. The second sound tube is connected to the second speaker. The mixing tube connects the first sound tube and the second sound tube to generate an overtone. The sound processing circuit is used to provide an audio signal to the speaker.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

100‧‧‧Electronic devices

110, 210, 310, 410, 510, 610, 710‧‧‧ Speakers

111, 311, 611, 711‧‧‧ first speaker

111h, 211h, 311h‧‧‧ first sound hole

112, 212, 312, 612, 712‧‧‧ second speaker

112h, 212h, 312h‧‧‧second sound hole

113, 713‧‧‧ third speaker

113s‧‧‧The surface of the third speaker

114, 714‧‧‧ fourth speaker

114s‧‧‧Outer surface of the fourth speaker

115, 215, 315, 715‧‧‧ first speaker unit

115f‧‧‧first diaphragm

116, 216, 316, 716‧‧‧ second speaker unit

116f‧‧‧Second diaphragm

117, 317, 517, 617, 717‧‧‧ first sound tube

118, 218, 318, 518, 618, 718‧‧‧ second sound tube

119, 219, 319, 519, 619, 719‧‧ ‧ mix tubes

119h, 219h, 319h, 419h‧‧‧ third sound hole

120‧‧‧Audio processing circuit

C1‧‧‧ frequency curve of the first lead

C2‧‧‧ frequency curve of the second lead

C3‧‧‧Overtone frequency curve

S0‧‧‧Sound signal

S11, S71‧‧‧ first lead

S12, S72‧‧‧ second lead

S13, S23, S33, S43, S53, S63, S73‧‧

FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the invention.

2 is a schematic view of a speaker in accordance with an embodiment of the present invention.

FIG. 3 is a schematic diagram showing the frequency curve of the first main sound, the frequency curve of the second main sound, and the frequency curve of the overtone in FIG. 2 .

4 is a schematic view of a speaker according to another embodiment of the present invention.

FIG. 5 is a schematic view of a speaker according to another embodiment of the present invention.

FIG. 6 is a schematic view of a speaker according to another embodiment of the present invention.

FIG. 7 is a schematic view of a speaker according to another embodiment of the present invention.

FIG. 8 is a schematic view of a speaker according to another embodiment of the present invention.

FIG. 9 is a schematic view of a speaker according to another embodiment of the present invention.

Please refer to FIG. 1 , which illustrates a schematic diagram of an electronic device 100 according to an embodiment of the invention. The electronic device 100 is, for example, a tablet computer, a notebook computer, a smart phone, or a handheld audio device. The electronic device 100 includes a speaker 110 and an audio processing circuit 120. The sound processing circuit 120 is configured to provide an audio signal S0 to the speaker 110.

Please refer to FIG. 2, which illustrates a schematic diagram of a speaker 110 according to an embodiment of the invention. The speaker 110 includes a first speaker 111, a second speaker 112, a third speaker 113, a fourth speaker 114, a first speaker unit 115, a second speaker unit 116, and a first sound tube 117. a second sound tube 118 and a mixing tube 119.

In the embodiment, the first speaker unit 115 is disposed in the third speaker 113. The first diaphragm 115f of the first horn unit 115 is disposed on the outer surface 113s of the third speaker 113 and faces the first speaker 111. The second horn unit 116 is disposed in the fourth speaker 114. The second diaphragm 116f of the second horn unit 116 is disposed on the outer surface 114s of the fourth speaker 114 and faces the second speaker 112.

In this embodiment, the third speaker 113 and the fourth speaker 114 are closed speakers. In another embodiment, the third speaker 113 and the fourth speaker 114 may be open speakers.

The first sound guiding tube 117 is connected to the first sound box 111, and the second sound guiding tube 118 is connected to the second sound box 112. The mixing tube 119 is connected to the first sound guiding tube 117 and the second sound guiding tube 118. Therefore, the sound wave generated by the first vibrating membrane 115f can be transmitted to the mixing tube 119 via the first sound guiding tube 117 after the first speaker 111 resonates; the sound wave generated by the second vibrating membrane 116f resonates after the second speaker 112 resonates It can be transmitted to the mixing tube 119 via the second sound tube 118. The mixing tube 119 radiates the sound waves after the mixing to form an overtone.

In an embodiment, the first sound tube 117 or the second sound tube 118 may be a straight tube or a zigzag tube. The first sound guiding tube 117 or the second sound guiding tube 118 may form a tortuous tubular structure using a partition plate, or may form a tubular structure directly in a mold injection molding manner.

The cross-sectional area of the mixing tube 119 is larger than the cross-sectional area of the first sound guiding tube 117, and larger than the cross-sectional area of the second sound guiding tube 118, so that the mixing tube 119 has enough space for mixing.

The first speaker 111 has a first sound hole 111h, the second speaker 112 has a second sound hole 112h, and the mixing tube 119 has a third sound hole 119h. In the present embodiment, the first sound hole 111h, the second sound hole 112h, and the third sound hole 119h are oriented in the same direction. The first sound hole 111h radiates the first main sound S11 of the first horn unit 115, the second sound hole 112h radiates the second main sound S12 of the second horn unit 116, and the third sound hole 119h radiates the first The overtone S13 is mixed by the horn unit 115 and the second horn unit 116. The cross-sectional area of the third sound hole 119 is smaller than the cross-sectional area of the mixing tube 119, so that the mixing tube 119 can form a half open sound cavity to perform the function of mixing.

Referring to FIG. 3, a schematic diagram of the frequency curve C1 of the first tonal S11 of FIG. 2, the frequency curve C2 of the second tonal S12, and the frequency curve C3 of the overtone S13 are shown. The frequency curve C1 of the first tonal S11 is different from the frequency curve C2 of the second tonal S12. After the mixing, the frequency curve C3 of the overtone S13 is substantially between the frequency curve C1 of the first main sound S11 and the frequency curve C2 of the second main sound S12. The sound wave radiated by the speaker 110 includes not only the first main sound S11 and the second main sound S12, but also the overtone S13, so that the played music has harmony and softness.

In addition to the above-described embodiments, those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Please refer to the exemplary description of the other embodiments below.

Please refer to FIG. 4, which illustrates a schematic diagram of a speaker 210 according to another embodiment of the present invention. In this embodiment, the first speaker unit 215 and the second speaker The horn unit 216 faces in different directions, and the first sound hole 211h and the second sound hole 212h face different directions, and the first sound hole 211h and the third sound hole 219h face different directions. In order to enable the sound waves generated by the second horn unit 216 to be transmitted to the mixing tube 219 via the second speaker 212 and the second sound guiding tube 218 to generate the overtone S23, the second sound guiding tube 218 increases the number of bending times.

Please refer to FIG. 5, which illustrates a schematic diagram of a speaker 310 according to another embodiment of the present invention. In this embodiment, the third sound hole 319h and the first sound hole 311h face different directions, and the third sound hole 319h and the second sound hole 312h face different directions. In order to enable the sound waves generated by the first horn unit 315 to be transmitted to the mixing tube 319 via the first speaker 311 and the first sound guiding tube 317, the first sound guiding tube 317 increases the number of bending times. In order to enable the sound waves generated by the second horn unit 316 to be transmitted to the mixing tube 319 via the second speaker 312 and the second sound guiding tube 318, the second sound guiding tube 318 increases the number of bending times. The sound waves are mixed in the mixing tube 319 to produce an overtone S33.

Please refer to FIG. 6 , which illustrates a schematic diagram of a speaker 410 according to another embodiment of the present invention. The speaker 410 of this embodiment has only the third sound hole 419h without the first sound hole and the second sound hole. That is to say, when the main tone is not required, only the third sound hole 419h can be set, and only the overtone S43 is radiated. Through the mixing technology, you can get softer sound quality.

Please refer to FIG. 7, which illustrates a schematic diagram of a speaker 510 according to another embodiment of the present invention. The first sound tube 517 and the second sound tube 518 may be straight tubes when space permits. The first sound tube 517 and the second sound tube 518 are connected to the sound mixer Tube 519 to form overtone S53.

Please refer to FIG. 8 , which is a schematic diagram of a speaker 610 according to another embodiment of the present invention. In this embodiment, the speaker 610 does not include the third speaker and the fourth speaker, and only the first speaker 611 and the second speaker. Speaker 612. The first sound guiding tube 617 is formed along the sidewall of the first speaker 611. The second sound tube 618 is formed along the sidewall of the second speaker 612. The first sound guiding tube 617 and the second sound guiding tube 618 are arranged in parallel. The ends of the first sound guiding tube 617 and the second sound guiding tube 618 are directly connected to each other to form a mixing tube 619. In this way, the first sound tube 617, the second sound tube 618, and the mixing tube 619 can be formed in the narrow space between the first speaker 611 and the second speaker 612 to create the overtone S63.

Please refer to FIG. 9 , which illustrates a schematic diagram of a speaker 710 according to an embodiment of the present invention. In this embodiment, in order to create a lower frequency first tones S71 and a higher frequency second tones S72, a larger first speaker unit 715 and a smaller second speaker unit 716 may be employed. Correspondingly, the volume of the first speaker 711 is different from the volume of the second speaker 712, and the volume of the third speaker 713 is different from the volume of the fourth speaker 714. Although the size of the first speaker unit 715 is different from the size of the second speaker unit 716, the first sound tube 717, the second sound tube 718, and the mixing tube 719 can be mixed to form an overtone S73. The lower frequency first tones S71 and the higher frequency second tones S72 plus the overtones S73 can effectively increase the degree of harmony and softness.

The designs of the various embodiments described above may be combined and are not limited to the drawings illustrated in the drawings of the embodiments. For example, Figure 9 uses different sizes of The design of the single unit can be combined in the design of Figures 4-8. The design of the single sound hole in Figure 6 can be combined in the design of Figures 2, 4, 5, and 7-9.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

110‧‧‧Speakers

111‧‧‧First speaker

111h‧‧‧The first sound hole

112‧‧‧Second speaker

112h‧‧‧Second sound hole

113‧‧‧ Third speaker

113s‧‧‧The surface of the third speaker

114‧‧‧fourth speaker

114s‧‧‧Outer surface of the fourth speaker

115‧‧‧First speaker unit

115f‧‧‧first diaphragm

116‧‧‧Second speaker unit

116f‧‧‧Second diaphragm

117‧‧‧First sound tube

118‧‧‧Second sound tube

119‧‧‧mixing tube

119h‧‧‧ third sound hole

S11‧‧‧ first lead

S12‧‧‧second lead

S13‧‧‧Overtone

Claims (9)

A speaker includes: a first speaker; a first speaker unit, comprising a first diaphragm, the first diaphragm facing the first speaker; a first sound tube connecting the first speaker; a second speaker unit, comprising a second diaphragm, the second diaphragm facing the second speaker; a second sound tube connected to the second speaker; and a mixing tube connecting the a first sound tube and the second sound tube to generate an overtone; wherein the first speaker has a first sound hole, the second speaker has a second sound hole, and the sound tube has a first The sound hole is three, and the first sound hole, the second sound hole and the third sound hole are separated. The speaker according to claim 1, further comprising: a third speaker, the first speaker unit is disposed in the third speaker; and a fourth speaker, the second speaker unit is disposed in the first speaker Inside the four speakers. The speaker of claim 1, wherein the first sound hole, the second sound hole and the third sound hole face in the same direction. The speaker of claim 1, wherein the third sound hole and the first sound hole face in different directions. The speaker of claim 1, wherein the first sound hole and the second sound hole face in different directions. The speaker of claim 1, wherein the third sound hole has a cross-sectional area smaller than a cross-sectional area of the sound mixing tube. The speaker of claim 1, wherein the cross-sectional area of the mixing tube is larger than the cross-sectional area of the first sound tube, and the cross-sectional area of the mixing tube is larger than the cross-sectional area of the second sound tube. The speaker of claim 1, wherein the first speaker unit and the second speaker unit face in different directions. An electronic device comprising: a speaker, comprising: a first speaker; a first speaker unit comprising a first diaphragm, the first diaphragm facing the first speaker; a first sound tube connecting the a second speaker; a second speaker unit, comprising a second diaphragm, the second diaphragm facing the second speaker; a second sound tube connected to the second speaker; a mixing tube connecting the first sound guiding tube and the second sound guiding tube to generate an overtone; and an audio processing circuit for providing an audio signal to the speaker; The first speaker has a first sound hole, the second speaker has a second sound hole, the sound tube has a third sound hole, and the first sound hole and the second sound The hole and the third sound hole are separated.