Audio waveguide fitting and wearable device

Abstract

The embodiment of the utility model discloses an audio waveguide fitting and wearable equipment. The specific implementation mode is as follows: the audio guided wave fitting piece comprises a first guided wave tube and a second guided wave tube. One end of the first wave guide tube can be fixed close to a sound outlet hole of the first loudspeaker, and the other end of the first wave guide tube can be coupled with a sound leakage hole of the second loudspeaker; wherein the first waveguide is used for enabling a second sound wave radiated by a sound leakage hole of the second loudspeaker to be radiated outwards through the first waveguide, so that at least part of the first sound wave radiated outwards from a sound outlet hole of the first loudspeaker is enhanced, and one end of the second waveguide can be fixed close to the sound outlet hole of the second loudspeaker. The other end of the second waveguide can be coupled with a sound leakage hole of the first loudspeaker; wherein the second wave guide tube is used for enabling a second sound wave radiated by a sound leakage hole of the first loudspeaker to be radiated outwards through the second wave guide tube, so that at least part of the first sound wave radiated outwards from a sound outlet hole of the second loudspeaker is enhanced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic equipment, and in particular to an audio waveguide accessory and a wearable device. Background Art

[0002] Wearable devices are usually equipped with two sets of audio components. When the user wears the wearable device, the two sets of audio components are respectively located at the user's ears. The audio component usually includes a front cavity and a rear cavity. The front cavity radiates the first sound wave to the outside through the sound outlet hole, and the rear cavity radiates the second sound wave to the outside through the sound leakage hole, so that the first sound wave can be heard by the human ear in the near field close to the sound outlet hole. The second sound wave is offset from the first sound wave in phase (for example, 180 degrees apart), so that the energy of the first sound wave and the second sound wave can cancel each other in the far field, thereby reducing the sound leakage of the audio component and protecting privacy. At present, due to space limitations, the audio components of wearable devices are not large enough to install large-size speakers, and the low-frequency sound effects are often insufficient. Utility Model Content

[0003] Embodiments of the present disclosure provide an audio system and smart glasses.

[0004] To achieve the above objectives, the present disclosure provides the following technical solutions:

[0005] On the one hand, an embodiment of the present disclosure provides an audio waveguide accessory for a wearable device, wherein the wearable device is used to be worn on the head of a user and has a first speaker and a second speaker disposed on both sides of the wearable device; the first speaker and the second speaker are driven in phase to radiate a first sound wave outward from a sound outlet hole of the first speaker and a sound outlet hole of the second speaker, and radiate a second sound wave from a sound leakage hole of the first speaker and a sound leakage hole of the second speaker, and the first sound wave and the second sound wave have opposite phases;

[0006] Audio waveguide accessories include at least:

[0007] a first waveguide, one end of which can be fixed close to the sound outlet of the first speaker, and the other end of which can be coupled to the sound leakage hole of the second speaker; wherein the first waveguide is used to radiate the second sound wave radiated by the sound leakage hole of the second speaker outwardly via the first waveguide, so that at least part of the first sound wave radiated outwardly from the sound outlet of the first speaker is enhanced;

[0008] A second waveguide, one end of which can be fixed close to the sound outlet of the second speaker, and the other end of which can be coupled with the sound leakage hole of the first speaker; wherein the second waveguide is used to radiate the second sound wave radiated from the sound leakage hole of the first speaker outwardly through the second waveguide, so that at least part of the first sound wave radiated outwardly from the sound outlet of the second speaker is enhanced.

[0009] On the other hand, an embodiment of the present disclosure provides a wearable device, including: a wearable body, a first speaker and a second speaker, the first speaker is arranged on one side of the wearable body, and the second speaker unit is arranged on the other side of the wearable body, wherein the first speaker and the second speaker are driven in phase to radiate a first sound wave outward from a sound outlet hole of the first speaker and a sound outlet hole of the second speaker, and radiate a second sound wave from a sound leakage hole of the first speaker and a sound leakage hole of the second speaker, the first sound wave and the second sound wave have opposite phases, and the wearable device also includes the above-mentioned audio waveguide accessory.

[0010] The technical solution of the present disclosure is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0012] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0013] Figure 1 A top view of a wearable body of a wearable device provided in some embodiments of the present disclosure is shown;

[0014] Figure 2 A bottom view of a wearable body of a wearable device provided in some embodiments of the present disclosure is shown;

[0015] Figure 3 A schematic diagram of the three-dimensional structure of an audio waveguide accessory provided in some embodiments of the present disclosure is shown;

[0016] Figure 4 A schematic diagram of the three-dimensional structure of a wearable device equipped with an audio waveguide accessory provided by some embodiments of the present disclosure is shown;

[0017] Figure 5 A sensitivity curve diagram of a wearable device provided by some embodiments of the present disclosure is shown;

[0018] Figure 6 A side view of a wearable device equipped with an audio waveguide accessory provided by some embodiments of the present disclosure is shown;

[0019] Figure 7 A schematic structural diagram of a front cavity connector and a rear cavity connector of an audio waveguide accessory provided in some embodiments of the present disclosure is shown;

[0020] Figure 8 A schematic diagram of the matching structure of the front cavity connector, the rear cavity connector and the temple of the audio waveguide accessory provided in some embodiments of the present disclosure is shown.

[0021] In the figure, 100, audio waveguide accessories; 1a, first waveguide; 1b, second waveguide; 2, front cavity connector; 21, first connecting part; 211, second limiting wall; 212, second end wall; 213, second clamping cavity; 22, second connecting part; 221, arc-shaped wall; 222, pipe threading groove; 3, rear cavity connector; 31, first clamping cavity; 32, first limiting wall; 33, first end wall; 200, first temple; 300, second temple; a, sound outlet hole; b, sound leakage hole; 400, mirror frame.

[0022] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present disclosure in any way, but rather to illustrate the concepts of the present disclosure for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. The following embodiments are used to illustrate the present disclosure but are not used to limit the scope of the present disclosure.

[0024] In the description of the present disclosure, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0025] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0026] Some embodiments of the present disclosure provide a wearable device. The wearable device may be smart glasses, earphones or other devices that can be stably worn on a human head. The wearable device has a first speaker and a second speaker disposed on both sides of the wearable device, and the first speaker and the second speaker are based on the principle of acoustic dipoles. The first speaker and the second speaker both have a front cavity and an open rear cavity, and the front cavity and the rear cavity are both connected to the outside world. The first speaker and the second speaker are driven in phase to radiate a first sound wave outward from the front cavity and radiate a second sound wave outward from the rear cavity. The first sound wave and the second sound wave have opposite phases, so that the first sound wave can be heard by the human ear in the near field close to the first speaker and the second speaker. The second sound wave is offset in phase from the first sound wave (for example, 180 degrees apart), so that the energy of the first sound wave and the second sound wave can cancel each other in the far field, thereby reducing the sound leakage of the wearable device and protecting privacy.

[0027] Figure 1 A top view of a wearable device provided by some embodiments of the present disclosure is shown. Figure 2 FIG. 2 shows a bottom view of a wearable device provided by some embodiments of the present disclosure. Figure 2 As shown, the first speaker and the second speaker of the wearable device both have a sound outlet a, and the front cavity is connected to the outside through the sound outlet a to radiate the first sound wave outward from the sound outlet a. When the wearable device is worn on the user's head, the sound outlet a faces the direction of the human ear. Figure 1 As shown, the first speaker and the second speaker of the wearable device both have a sound leakage hole b, and the rear cavity is connected to the outside through the sound leakage hole b to radiate the second sound wave outward from the sound leakage hole b.

[0028] Some embodiments of the present disclosure provide an audio waveguide accessory for a wearable device. The audio waveguide accessory includes a waveguide. The waveguide has a channel inside that can conduct airflow. The waveguide is connected to the back cavity of a speaker located on one side of the wearable device to conduct a second sound wave to the vicinity of a sound outlet of the speaker located on the other side of the wearable device, while delaying the phase of the second sound wave. At least part of the second sound wave is superimposed on the first sound wave and is heard by the human ear.

[0029] Figure 3 1 shows a schematic diagram of the stereoscopic structure of an audio waveguide accessory 100 provided in some embodiments of the present disclosure, Figure 4A structural schematic diagram of a wearable device equipped with an audio waveguide accessory 100 provided in some embodiments of the present disclosure is shown. The audio waveguide accessory 100 includes at least: a first waveguide 1a and a second waveguide 1b. One end of the first waveguide 1a can be fixed close to the sound outlet a of the first speaker, and the other end of the first waveguide 1a can be coupled with the sound leakage hole b of the second speaker. The first waveguide 1a is used to radiate the second sound wave radiated from the sound leakage hole b of the second speaker through the first waveguide 1a, so that at least part of the first sound wave radiated from the sound outlet a of the first speaker is enhanced. Correspondingly, one end of the second waveguide 1b can be fixed close to the sound outlet a of the second speaker, and the other end of the second waveguide 1b can be coupled with the sound leakage hole b of the first speaker. The second waveguide 1b is used to radiate the second sound wave radiated from the sound leakage hole b of the first speaker through the second waveguide 1b, so that at least part of the first sound wave radiated from the sound outlet a of the second speaker is enhanced. The audio waveguide accessories use at least two waveguides to delay the second sound wave radiated from the rear cavities of the two speakers outward and transmit it to the vicinity of the sound outlets on the opposite sides, so that at least part of the delayed second sound wave is superimposed on the sound pressure of the first sound wave radiated from the front cavities of the two speakers, thereby improving the audio effect in a specific frequency band and enhancing the user experience.

[0030] In some embodiments of the present disclosure, the lengths of the first waveguide 1a and the second waveguide 1b may be determined in the following manner:

[0031] The formula for calculating the sound pressure amplitude after the delayed wave and the undelayed wave from the same sound source are superimposed is as follows:

[0032] P 总 =2×P0×sin(2×π×f×L / (V×2));

[0033] Among them, P0 is the sound pressure amplitude of a single speaker, f is the sound source frequency, L is the difference in the length of the transmission path of the sound waves emitted by the two speakers, and V is the speed of sound; among them, since the path in the sound cavity (front cavity and rear cavity) is approximately equal to 1 / 40-1 / 100 of the length of the waveguide, it can be ignored, and the difference in the length of the transmission path of the sound waves emitted by the two speakers can be basically equivalent to the length of a single waveguide. When Ptotal>P0, it can be considered that the superimposed sound pressure amplitude is larger than the original amplitude.

[0034] Some embodiments of the present disclosure provide a correspondence between the superposition frequency, waveguide length, lower limit frequency, and upper limit frequency, as shown in the table below.

[0035]

[0036] In some embodiments of the present disclosure, the lengths of the first waveguide 1a and the second waveguide 1b are both greater than or equal to 20 cm and less than or equal to 60 cm, so that the first sound waves in the range of 300 Hz to 800 Hz are enhanced, that is, the low-frequency sound effects are enhanced, improving the user experience.

[0037] In some embodiments of the present disclosure, in order to ensure the audio effect, the size of the first waveguide 1a and the second waveguide 1b is designed so that the air flow velocity in the first waveguide 1a and the second waveguide 1b is less than or equal to 30 m / s. The air flow velocity in the waveguide is related to the effective radiation area of ​​the speaker and the size of the channel in the waveguide. Optionally, for a selected speaker, the air flow velocity can be controlled by designing the cross-sectional area of ​​the channel in the waveguide.

[0038] Some embodiments of the present disclosure provide a correspondence between the effective radiation area of ​​a speaker and the cross-sectional area of ​​a channel in a waveguide, as shown in the table below.

[0039] Speaker effective radiation area-Sd Channel area lower limit Upper limit of channel area <![CDATA[100mm 2 ]]> <![CDATA[5mm 2 ]]> <![CDATA[10mm 2 ]]> <![CDATA[450mm 2 ]]> <![CDATA[38mm 2 ]]> <![CDATA[95mm 2 ]]>

[0040] Figure 5 The sensitivity curve of a wearable device is shown in Figure 1. In the figure, the dotted line is the sensitivity curve before the sound waves are superimposed, and the solid line is the sensitivity curve after the sound waves are superimposed. The waveguide of the wearable device has a length of 0.39m and a cross-sectional area of ​​9.6mm. 2 The vertical axis is the sound pressure level in dB, and the horizontal axis is the frequency in Hz. Figure 7 It can be clearly seen that after superposition, the low-frequency effect of wearable devices has been improved.

[0041] In some optional embodiments, the cross-section of the inner channel of the first waveguide 1a and the second waveguide 1b can be circular, rectangular, racetrack-shaped, etc. The channel has a smooth path without sharp corners, which can avoid sound wave reflection.

[0042] Figure 6 shows a side view of a wearable device provided by some embodiments of the present disclosure, Figure 7 A schematic diagram of the structure of the front cavity connector and the rear cavity connector of the audio waveguide accessory provided in some embodiments of the present disclosure is shown. Figure 8A schematic diagram of the matching structure of the front cavity connector, the rear cavity connector and the wearable body of the audio waveguide accessory provided in some embodiments of the present disclosure is shown. The audio waveguide accessory 100 also includes a front cavity connector 2, which is arranged at one end of the waveguide, and the front cavity connector 2 is used to fix one end of the waveguide close to the sound outlet a of the speaker on one side of the wearable device, so that the second sound wave radiated to the outside by the speaker through the sound leakage hole b can be coupled into the sound input port at the end of the waveguide, and then released from the sound outlet port of the waveguide after passing through the waveguide, and radiated to the side of the sound outlet a of the speaker, thereby strengthening at least part of the first sound wave of the speaker.

[0043] In some optional embodiments, the wearable device includes a wearable body. For example, when the wearable device is a smart glasses, the wearable body is the frame and temples of the smart glasses; when the wearable device is an earphone, the wearable body is a connector of the earphone. Figure 7 and Figure 8 As shown, the front cavity connector 2 includes a first connector 21 and a second connector 22. The first connector 21 is used to connect and fix to the wearable body of the wearable device. For example, the first connector 21 can be fixed to the temple of smart glasses, or fixed to the connector of the headset. The second connector 22 is used to connect and fix the waveguide, so that the sound outlet port of the waveguide is close to the sound outlet hole a of the speaker, but does not completely block the sound outlet hole a of the speaker, so that the second sound wave delayed by the waveguide can enter the human ear together with the first sound wave.

[0044] In some optional embodiments, see Figure 7 and Figure 8 As shown, the first connection part 21 includes two second limiting walls 211 and a second end wall 212 connecting the two second limiting walls 211, and a second clamping cavity 213 is formed between the two second limiting walls 211. The wearable body of the wearable device can be clamped in the second clamping cavity 213, that is, the wearable body passes through the second clamping cavity 213, the two second limiting walls 211 are respectively located on both sides of the wearable body, and the two second limiting walls 211 are clamped on both sides of the wearable body, and the second connection part 22 is connected to the second end wall 212. The second limiting walls 211 can all have a certain elasticity, and the two second limiting walls are arranged at intervals. In the absence of external force, the spacing between the two second limiting walls 211 can be less than the thickness of the corresponding part of the wearable body. When the first connection part 21 is to be connected to the wearable body, the corresponding part of the wearable body can be moved into the second clamping cavity 213 to open the two second limiting walls. When the wearable body and the first connection part 21 are assembled in place, the two second limiting walls are clamped on both sides of the wearable body. The front cavity connecting piece 2 is not easy to be separated from the wearing body.

[0045] It is understandable that, when the first connection portion 21 is connected to the wearable device, the first connection portion 21 can be staggered with the sound outlet a on the wearable device to prevent the second end wall 212 from blocking the sound outlet a.

[0046] In some optional embodiments, see Figure 7 and Figure 8 As shown, the second connection part 22 includes two arcuate walls 221, both of which are connected to the side of the second end wall 212 away from the second limiting wall 211, and the ends of the two arcuate walls 221 away from the second end wall 212 are close to each other, and a pipe-through groove 222 is formed between the second end wall 212 and the two arcuate walls 221, and the waveguide is arranged through the pipe groove 222, and the second end wall 212 and the two arcuate walls 221 clamp and fix the waveguide. The spacing between the edges of the two arcuate walls 221 on one side away from the second end wall 212 is smaller than the outer diameter of the waveguide, so as to prevent the waveguide from detaching from the second connection part 22 from the bottom.

[0047] In some optional embodiments, the audio waveguide accessory 100 also includes: a rear cavity connector 3, which is arranged at the other end of the waveguide, and the rear cavity connector 3 is used to fix the other end of the waveguide to the sound leakage hole b of the first speaker or the second speaker on the other side of the wearable device, so that the second sound wave radiated by the sound leakage hole b of the speaker can be coupled into the sound input port of the waveguide, and radiate the sound wave to the outside through the sound output port of the waveguide.

[0048] In some embodiments of the present disclosure, the rear cavity connector 3 includes a third connecting portion and a fourth connecting portion, the third connecting portion is connected to the wearable body, and the fourth connecting portion is used to connect to the waveguide, so that the sound inlet port of the waveguide 1 is connected to the sound leakage hole b of the corresponding speaker.

[0049] In an optional embodiment, the third connection part may include a first clamping cavity 31, the fourth connection part may include a connecting hole connected to the first clamping cavity 31, the wearable device can be clamped in the first clamping cavity 31, the waveguide is connected to the rear cavity connector 3, and one end of the waveguide is connected to the connecting hole. The connecting port is connected to the sound leakage hole b on the wearable device, and the second sound wave radiated by the sound leakage hole b can directly enter the waveguide through the connecting hole and finally radiate from the other end of the waveguide.

[0050] In some optional embodiments, see Figure 7 As shown, the rear cavity connector 3 includes two first limiting walls 32 spaced apart and a first end wall 33 connecting the two first limiting walls 32, a first clamping cavity 31 is formed between the two first limiting walls 32, and a connecting hole is provided on the first end wall 33. The two first limiting walls 32 cooperate to stably clamp on the wearable device, and the connecting port on the first end wall 33 can face the sound leakage hole b of the speaker.

[0051] In some optional embodiments, the length of the waveguide can be varied within the range of [-10%, +10%]. The waveguide can adapt to users with different head shapes without affecting the low-frequency enhancement effect. The telescopic length of the waveguide can be controlled within the range of ±10% of the waveguide length without affecting the low-frequency enhancement effect.

[0052] In some embodiments of the present disclosure, the waveguide can be made of an elastic material, and the waveguide can be stretched and deformed so as to be adaptable to users with different head shapes. When the wearable device is glasses, the two ends of the waveguide are connected to the two temples through the rear cavity connector 3 and the front cavity connector 2 respectively. When the waveguide is in an elastic stretching state, the waveguide can also play a role in adjusting the clamping force of the two temples. The waveguide can also include an elastic main pipe section and hard pipe sections located at both ends of the main pipe section, the two hard pipe sections are connected to the main pipe section, and the hard pipe sections can be conveniently connected to the rear cavity connector 3 and the front cavity connector 2.

[0053] In some optional embodiments, the waveguide has a first pipe section and a second pipe section, one of which is sleeved on the other, and the first pipe section and the second pipe section can slide relative to each other to adjust the overlapping length of the two. The first pipe section and the second pipe section can both be flexible pipes. Only one of the first pipe section and the second pipe section can be a flexible pipe, and the other can be a hard pipe. Alternatively, the first pipe section and the second pipe section are partially a hard pipe body and partially a flexible pipe body, and the hard pipe bodies of the first pipe section and the second pipe section are slidably connected. When the first pipe section and the second pipe section are connected, the connection can be mainly achieved by relying on friction resistance to prevent the two from separating. The first pipe section and the second pipe section can also be threadedly connected, and the total length of the waveguide can be fine-tuned by operating the relative rotation of the two.

[0054] In some optional embodiments, the first waveguide 1a and the second waveguide 1b may be provided separately. The two waveguides may have substantially the same structure and have no connection relationship between them.

[0055] In some optional embodiments, the first waveguide 1a and the second waveguide 1b may also be connected. The first waveguide 1a and the second waveguide 1b form a complete structure, which is convenient for carrying, use and storage, and avoids the loss of one of the first waveguide 1a and the second waveguide 1b. Exemplarily, the first waveguide 1a and the second waveguide 1b can be connected at least partially. The front cavity connector 2 of the first waveguide 1a can be connected to the rear cavity connector 3 of the second waveguide 1b, and the two can also be directly integrated. Similarly, the rear cavity connector 3 of the first waveguide 1a can be connected to the front cavity connector 2 of the second waveguide 1b, and the two can also be directly integrated. For example, the two first limiting walls 32 of the rear cavity connector 3 can be connected to the second limiting wall 211 of the front cavity connector 2, and the four are enclosed to form a through groove. The audio waveguide accessory 100 can be set on the wearable device through the through groove.

[0056] Figure 4 A schematic diagram of the three-dimensional structure of a wearable device equipped with an audio waveguide accessory provided in some embodiments of the present disclosure is shown. Figure 6 A side view of a wearable device equipped with an audio waveguide accessory provided by some embodiments of the present disclosure is shown. Figure 1 A top view of a wearable body of a wearable device provided in some embodiments of the present disclosure is shown. Figure 2 A bottom view of a wearable body of a wearable device provided by some embodiments of the present disclosure is shown. The wearable device includes: a wearable body, a first speaker, and a second speaker. The wearable body may be smart glasses. The first speaker is arranged on one side of the wearable body, and the second speaker unit is arranged on the other side of the wearable body, wherein the first speaker and the second speaker are driven in phase to radiate a first sound wave outward from a sound outlet a of the first speaker and a sound outlet a of the second speaker, and radiate a second sound wave from a sound leakage hole b of the first speaker and a sound leakage hole b of the second speaker, and the first sound wave and the second sound wave have opposite phases. The wearable device may also include an audio waveguide accessory 100. The matching structure of the audio waveguide accessory 100 and the wearable body has been described in detail above.

[0057] In some optional embodiments, see Figure 1 and Figure 2As shown, the wearable body includes: a frame 400, a first temple 200 and a second temple 300, the first temple 200 is connected to the frame 400, the first speaker is arranged on the first temple 200, the first temple 200 is provided with a sound outlet a and a sound leakage hole b of the first speaker, the second temple 300 is connected to the frame 400, the second speaker is arranged on the second temple 300, and the second temple 300 is provided with a sound outlet a and a sound leakage hole b of the second speaker. The sound outlet a and the sound leakage hole b on each temple are respectively located on both sides of the temple along the width direction. When the user wears the wearable device, the sound outlet a faces the human ear, and the sound leakage hole b faces away from the human ear. One end of the first waveguide 1a is fixed to a position on the first temple 200 close to the sound outlet hole a of the first speaker, the other end of the first waveguide 1a is fixed to a sound leakage hole b of the second speaker on the second temple 300, one end of the second waveguide 1b is fixed to a position on the second temple 300 close to the sound outlet hole a of the second speaker, and the other end of the second waveguide 1b is fixed to a sound leakage hole b of the first speaker on the first temple 200. When the user wears the wearable device, the first waveguide 1a and the second waveguide 1b can surround the user's head or neck without interfering with the human body. The two ends of the first waveguide 1a and the second waveguide 1b are respectively connected to the two temples, so as to increase the clamping force between the two temples and improve the wearing stability and comfort of the wearable device.

[0058] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. An audio waveguide accessory for a wearable device, characterized in that: The wearable device is used to be worn on the head of a user, and has a first speaker and a second speaker arranged on both sides of the wearable device; the first speaker and the second speaker are driven in phase to radiate a first sound wave outward from a sound outlet hole of the first speaker and a sound outlet hole of the second speaker, and radiate a second sound wave from a sound leakage hole of the first speaker and a sound leakage hole of the second speaker, and the first sound wave and the second sound wave have opposite phases; The audio waveguide accessories at least include: a first waveguide, one end of which can be fixed close to the sound outlet of the first speaker, and the other end of which can be coupled to the sound leakage hole of the second speaker; wherein the first waveguide is used to radiate the second sound wave radiated by the sound leakage hole of the second speaker outwardly via the first waveguide, so that at least part of the first sound wave radiated outwardly from the sound outlet of the first speaker is enhanced; A second waveguide, one end of which can be fixed close to the sound outlet of the second speaker, and the other end of which can be coupled to the sound leakage hole of the first speaker; wherein the second waveguide is used to radiate the second sound wave radiated from the sound leakage hole of the first speaker outwardly via the second waveguide, so that at least part of the first sound wave radiated outwardly from the sound outlet of the second speaker is enhanced.

2. The audio waveguide accessory according to claim 1, wherein: The lengths of the first waveguide and the second waveguide are both greater than or equal to 20 cm and less than or equal to 60 cm, and the first waveguide and the second waveguide enhance the first sound wave in the range of 300 Hz to 800 Hz.

3. The audio waveguide accessory according to claim 1, wherein: The sizes of the first waveguide and the second waveguide are designed so that the air flow velocity in the first waveguide and the second waveguide is less than or equal to 30 m / s.

4. The audio waveguide accessory according to claim 1, wherein: The audio waveguide accessories also include: A front cavity connector, which is arranged at one end of the first waveguide or the second waveguide, and is used to fix one end of the first waveguide or the second waveguide close to the sound outlet hole of the first speaker or the second speaker on one side of the wearable device.

5. The audio waveguide accessory according to claim 1, wherein: The audio waveguide accessory also includes: a rear cavity connector, which is arranged at the other end of the first waveguide or the second waveguide, and the rear cavity connector is used to fix the other end of the first waveguide or the second waveguide to the sound leakage hole of the first speaker or the second speaker on the other side of the wearable device.

6. The audio waveguide accessory according to any one of claims 1 to 5, wherein: The lengths of the first waveguide and the second waveguide can vary within a range of [-10%, +10%].

7. The audio waveguide accessory according to claim 6, wherein: The first waveguide and the second waveguide are arranged in any of the following ways: The first waveguide and the second waveguide are made of elastic material, and the first waveguide and the second waveguide can be telescopically deformed; The first waveguide and the second waveguide each have a first pipe section and a second pipe section, one of the first pipe section and the second pipe section is sleeved on the other, and the first pipe section and the second pipe section can slide relative to each other to adjust the overlapping length of the two.

8. The audio waveguide accessory according to claim 1, characterized in that: The audio waveguide fittings are arranged as follows: The first waveguide and the second waveguide are separately arranged; The first waveguide and the second waveguide are connected.

9. A wearable device, characterized in that: include: Wearing subject; A first speaker, wherein the first speaker is disposed on one side of the wearable body; A second speaker, wherein the second speaker unit is arranged on the other side of the wearable body; The first speaker and the second speaker are driven in phase to radiate a first sound wave outward from the sound outlet hole of the first speaker and the sound outlet hole of the second speaker, and radiate a second sound wave from the sound leakage hole of the first speaker and the sound leakage hole of the second speaker, and the first sound wave and the second sound wave have opposite phases; The wearable device further comprises: an audio waveguide accessory as described in any one of claims 1-8.

10. The wearable device according to claim 9, wherein: The wearable body comprises: Frames; a first temple, wherein the first temple is connected to the temple frame, the first speaker is arranged on the first temple, and the sound outlet hole and the sound leakage hole of the first speaker are formed on the first temple; a second temple, wherein the second temple is connected to the temple frame, the second speaker is arranged on the second temple, and a sound outlet hole and a sound leakage hole of the second speaker are opened on the second temple; One end of the first waveguide is fixed to a position on the first temple close to the sound outlet hole of the first speaker, and the other end of the first waveguide is fixed to a sound outlet hole of the second speaker on the second temple; One end of the second waveguide is fixed to a position on the second temple close to the sound outlet hole of the second speaker, and the other end of the second waveguide is fixed to the sound leakage hole of the first speaker on the first temple.

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