Apparatus and methods related to a tactile vibrator for a speaker system
View Patent ↗A speaker comprises a support structure having a circumferentially extending rim, a vibration member configured to be displaced relative to the support structure during operation of the speaker, and a suspension member suspending the vibration member relative to the support structure. The suspension member includes a radially outer portion attached to the rim of the support structure, a radially inner platform portion attached to the vibration member, and a plurality of beams. Each beam of the plurality of beams may extend from the radially outer portion to the radially inner platform portion. The plurality of beams is configured such that a resonant frequency of the vibration member attached to the radially inner platform portion of the suspension member scales linearly with a beam width of the beams of the plurality of beams.
1. A headphone, comprising:
a headphone including a plurality of speaker assemblies including one speaker assembly for each ear of a user, wherein each speaker assembly of the plurality includes:
an audio driver configured to produce sound at audible frequencies;
a tactile vibrator positioned with the audio driver within the speaker assembly, the tactile vibrator comprising:
a suspension member including:
a radially outer portion;
a radially inner platform portion configured to support a magnetic element to displace the radially inner platform portion relative to the radially outer portion; and
a plurality of beams, each beam of the plurality of beams extending from the radially outer portion to the radially inner platform portion in a spiral direction such that a directional line extending outwardly from a center of the radially inner platform portion passes through at least two neighboring beams.
2. The headphone of claim 1 , wherein each beam of the plurality of beams extends from the radially outer portion to the radially inner portion in a monotonic common spiral direction.
3. The headphone of claim 1 , wherein each beam of the plurality of beams contacts the radially outer portion at a single location.
4. The headphone of claim 1 , wherein each beam of the plurality of beams contacts the radially inner platform portion at a single location.
5. The headphone of claim 1 , wherein the beams of the plurality of beams do not intersect each other.
6. A speaker system for a headphone, comprising:
a plurality of speaker assemblies, wherein each speaker assembly is configured for each ear of a user and includes:
a tactile vibrator including:
a support structure; and
a suspension member including:
a radially outer portion connected to the support structure;
a radially inner platform portion configured to support a magnetic element to displace the radially inner platform portion relative to the radially outer portion; and
a plurality of beams, each beam of the plurality of beams smoothly extends from the radially outer portion to the radially inner platform portion without distinct transitions in a spiral direction; and
an audio driver located between the support structure and an air cavity for the headphone.
7. The headphone of claim 6 , wherein each speaker assembly includes a frame support member within a common speaker assembly of the headphone with the tactile vibrator and the audio driver, wherein the radially outer portion of the suspension member is attached to the frame support member, and the support structure is located between the suspension member and the frame support member.
8. The headphone of claim 7 , wherein the audio driver is attached to the frame support member between the support structure and an air cavity of each speaker assembly of the headphone.
9. The headphone of claim 8 , wherein each speaker assembly further includes:
a first magnetic element attached to an underside of the radially inner platform portion of the suspension member; and
a second magnetic element attached to a topside of a lower portion of the support structure.
10. The headphone of claim 9 , wherein one of the first magnetic element or the second magnetic element includes a permanent magnet, and the other of the first magnetic element or the second magnetic element includes a coils at least one coil configured to be actively driven.
11. The headphone of claim 9 , wherein at least one speaker assembly further includes an additional weight element attached to a topside of the radially inner platform portion of the suspension member.
12. The headphone of claim 6 , wherein the tactile vibrator for each speaker assembly exhibits a resonant frequency between approximately 40 Hz and 80 Hz.
13. A method of forming a headphone including a plurality of speaker assemblies that each include a tactile bass vibrator and an audio driver, the method comprising forming each speaker assembly of the plurality by:
forming a suspension member including a radially outer portion, a radially inner platform portion, and a plurality of beams, each beam of the plurality of beams extending from the radially outer portion to the radially inner platform portion in a common spiral direction such that a directional line extending outwardly from a center of the radially inner platform portion passes through at least two neighboring beams;
attaching the suspension member to a rim of a support structure within the speaker assembly; and
arranging the audio driver within the speaker assembly.
14. The method of claim 13 , further comprising:
attaching a first magnetic element to an underside of the radially inner platform portion of the suspension member within each speaker assembly; and
attaching a second magnetic element to a topside of a lower portion of the support structure within a cavity between the support structure and the suspension member within each speaker assembly.
15. A method of operating, a headphone including a plurality of speaker assemblies, the method comprising:
driving a tactile vibrator positioned within each speaker assembly of the plurality causing tactile vibrations responsive to displacement of a radially inner platform portion relative to a radially outer portion of a tactile vibrator having a plurality of beams extending between the radially inner platform portion and the radially outer portion in a common spiral direction such that a directional line extending outwardly from a center of the radially inner platform portion passes through at least two neighboring beams; and
driving an audio driver positioned within each speaker assembly of the plurality causing audible sound waves to be produced responsive to an input audio signal.
16. The method of claim 15 , further comprising splitting the input audio signal to send a first split audio signal to drive the tactile vibrator in each speaker assembly, and a second split audio signal to drive the audio driver in each speaker assembly.
17. The method of claim 15 , wherein driving the tactile vibrator in one of the speaker assemblies includes adjusting an adjustable resistor in a path of the input audio signal until a response for the respective speaker assembly including the tactile vibrator and the audio driver is approximately the same as a response for the other speaker assembly.
18. The method of claim 15 , further comprising generating the input signal from a media content file having a peak bass frequency approximately the same as a resonant frequency exhibited by the tactile vibrator for each speaker assembly.
19. The speaker system of claim 6 , wherein each speaker assembly further includes a plate positioned between the audio driver and the air cavity such that the audio driver and the tactile vibrator are oriented parallel with the plate.
20. The speaker system of claim 19 , wherein the plate includes apertures formed therein.