Device and method of equalizing low frequency roll off for wearable sound device
A wearable sound device includes a venting module, configured to form at least one vent to connect a volume within the wearable sound device and ambient, and a sound producing device, configured to produce sound according to an equalized input signal. The venting module, including at least one venting device, operates among a plurality of statuses corresponding to a plurality of degrees of opening. A controller generates the equalized input signal according to a degree of opening among the plurality of degrees of opening, in order to counteract a roll off caused by the at least one vent.
1. A wearable sound device, comprising:
a venting module, comprising at least one venting device, configured to form at least one vent to connect a volume within the wearable sound device and ambient; and
a sound producing device, configured to produce sound according to an equalized input signal;
wherein the venting module operates among a plurality of statuses corresponding to a plurality of degrees of opening;
wherein a controller generates the equalized input signal according to a degree of opening among the plurality of degrees of opening, in order to counteract a roll off caused by the at least one vent.
2. The wearable sound device of claim 1 ,
wherein the sound perceived under a first status with a minimum degree of opening is corresponding to a first frequency response;
wherein the sound perceived under a second status with a maximum degree of opening is corresponding to a second frequency response;
wherein a difference between the first frequency response and the second frequency response is less than a specific threshold.
3. The wearable sound device of claim 1 , wherein a venting device within the venting module operates in a mode among a plurality of modes, the plurality of modes of the at least one venting device forms the plurality of statuses of the venting module.
4. The wearable sound device of claim 3 , wherein the plurality of modes comprises a close mode, an open mode or a comfort mode.
5. The wearable sound device of claim 4 ,
wherein a degree of opening of the comfort mode is between a degree of opening of the open mode and a degree of opening of the close mode.
6. The wearable sound device of claim 4 ,
wherein the venting device comprises a first flap and a second flap;
wherein in the open mode, the first flap is actuated to bend upward and the second flap is actuated to bend downward;
wherein in the close mode, the first flap and the second flap are actuated to be parallel to each other;
wherein in the comfort mode, the first flap and the second flap hang below a level corresponding to their anchored portions.
7. The wearable sound device of claim 1 , wherein the controller utilizes a first equalization curve among a plurality of equalization curves according to a first status of the venting module to generate the equalized input signal.
8. The wearable sound device of claim 7 , wherein in response to a control message about switching from the first status to a second status, the controller replaces the first equalization curve with a second equalization curve of the plurality of equalization curves.
9. The wearable sound device of claim 7 , wherein the first status is decided by the controller or conveyed to the controller from a user or a device communicatively coupled to the controller.
10. The wearable sound device of claim 7 , wherein a control message about the first status of the venting module is received by the controller or transmitted toward the at least one venting device via a wireless or wired connection.
11. The wearable sound device of claim 7 , wherein each of the plurality of equalization curves is created or edited parametrically, graphically, automatically, or manually corresponding to one of a plurality of statuses of the venting module.
12. The wearable sound device of claim 7 , wherein a total number of the plurality of equalization curves is at least related to a total number of the at least one venting device or a total number of modes of one of the at least one venting device.
13. The wearable sound device of claim 1 , wherein the controller is disposed within the wearable sound device.
14. The wearable sound device of claim 1 , wherein the controller is disposed within an electronic device communicatively coupled to the wearable sound device.
15. The wearable sound device of claim 1 , wherein the equalized input signal is transmitted from the controller toward the sound producing device via a wireless or wired connection.
16. The wearable sound device of claim 1 , wherein the controller utilizes a plurality of equalization curves corresponding to the plurality of statuses to generate the equalized input signal.
17. The wearable sound device of claim 1 , wherein a number of the plurality of statuses is larger than 2.
18. The wearable sound device of claim 1 , wherein a venting device within the venting module comprises a film structure with a slit formed thereon, a vent of the at least one vent is formed because of the slit.
19. The wearable sound device of claim 1 ,
wherein the sound producing device comprises a first sound producing sub-device functioning as a tweeter and a second sound producing sub-device functioning as a woofer.
20. The wearable sound device of claim 19 , wherein the first sound producing sub-device is MEMS (Micro Electro Mechanical System) fabricated.
21. The wearable sound device of claim 19 , wherein the second sound producing sub-device comprises an audio dynamic driver or a moving-coil speaker.
22. A device, comprising:
a controller, configured to generate an equalized input signal according to a degree of opening among a plurality of degrees of opening of a venting module;
wherein the controller is coupled to a sound producing device;
wherein the sound producing device is configured to produce sound according to the equalized input signal;
wherein the venting module is configured to form at least one vent and has the plurality of degrees of opening;
wherein the controller generating the equalized input signal is to counteract a roll off due to the at least one vent.
23. The device of claim 22 , wherein the controller utilizes a first equalization curve among a plurality of equalization curves according to a first status of the venting module to generate the equalized input signal.
24. An equalizing method, configured to generate an equalized input signal for a sound producing device,
the equalizing method comprising:
obtaining a status of a venting module among a plurality of status, wherein the venting module forming at least one vent operates among the plurality of statuses corresponding to a plurality of degrees of opening; and
generating the equalized input signal according to the status;
wherein a controller generates the equalized input signal according to a degree of opening among the plurality of degrees of opening, in order to counteract a roll off caused by at least one vent.
25. The equalizing method of claim 24 , comprising:
utilizing a first equalization curve among a plurality of equalization curves according to a first status of the venting module to generate the equalized input signal.
26. The equalizing method of claim 25 , further comprising:
switching from the first equalization curve to a second equalization curve of the plurality of equalization curves in response to a control message about switching the first status to a second status.
27. The equalizing method of claim 25 , wherein the plurality of equalization curves is established either parametrically, graphically, automatically, or according to user instruction corresponding to one of a plurality of statuses of the venting module.
28. A wearable sound device, comprising:
an acoustic transducer, configured to form at least one opening to connect a volume within the wearable sound device and ambient and configured to produce sound according to an equalized input signal;
wherein the acoustic transducer operates among a plurality of statuses corresponding to a plurality of degrees of opening;
wherein a controller generates the equalized input signal according to a degree of opening among the plurality of degrees of opening, in order to counteract a roll off caused by at least one vent.