Resonator devices and assemblies thereof
An assembly including an apparatus and a device, the apparatus including a speaker configured to generate acoustic waves defining an alarm tone and a housing enclosing the speaker. The speaker is positioned within the housing such that a front chamber is between the speaker and at least one first opening of the housing, with the acoustic waves exiting through the at least one first opening. The device is coupled to the housing and includes a body having an aperture, a cavity, and at least one second opening, the cavity being positioned adjacent to the housing and configured to receive the acoustic waves through the aperture, with the acoustic waves exiting through the at least one second opening. The aperture, the cavity, and the at least one second opening are sized to collectively generate an increased output of the assembly within a frequency range of the alarm tone.
1 . An assembly comprising:
an apparatus comprising:
a speaker including a diaphragm configured to generate acoustic waves defining an alarm tone; and
a housing enclosing the speaker and including at least one first opening, the speaker being positioned within the housing such that a front chamber is between the diaphragm and the at least one first opening, wherein the acoustic waves exit from the apparatus through the at least one first opening; and
a resonator device coupled to the housing and comprising a body having an aperture, a cavity, and at least one second opening open to atmosphere, the cavity being positioned adjacent to the housing and configured to receive the acoustic waves through the aperture, wherein the acoustic waves exit from the resonator device through the at least one second opening, and wherein the aperture, the cavity, and the at least one second opening are sized to collectively generate an increased output of the assembly having a resonance frequency within a frequency range of the alarm tone.
2 . The assembly of claim 1 , wherein a combination of the apparatus and the resonator device defines a resonator having the resonance frequency that is within the frequency range of the alarm tone.
3 . The assembly of claim 1 , wherein the front chamber and the cavity are coupled so that the at least one first opening, the aperture, and the at least one second opening are configured to collectively generate, with the front chamber and the cavity, a peak output of the assembly within the frequency range of the alarm tone.
4 . The assembly of claim 1 , wherein the at least one first opening comprises a plurality of openings, the at least one second opening comprises a plurality of openings, or the at least one first opening and the at least one second opening both comprise a plurality of openings.
5 . The assembly of claim 1 , wherein the frequency range of the alarm tone falls within a range from 2.0 kHz to 4.0 kHz.
6 . The assembly of claim 1 , wherein the acoustic waves further comprise speech.
7 . An assembly comprising:
a loudspeaker configured to generate acoustic waves; and
a device positioned adjacent to the loudspeaker, the device comprising a body having an aperture, a cavity, and at least one opening open to atmosphere, the aperture being configured to receive the acoustic waves from the loudspeaker in a first direction, and the cavity being configured to redirect the acoustic waves through the at least one opening in a second direction different from the first direction, wherein the acoustic waves define an alarm tone and the assembly defines a resonator having a resonance frequency that is within a frequency range of the alarm tone.
8 . The assembly of claim 7 , wherein the cavity comprises a curved portion positioned opposite the at least one opening.
9 . The assembly of claim 7 , wherein the second direction is oriented at an angle of between 1° to 90° with respect to the first direction.
10 . The assembly of claim 7 , further comprising a housing that encloses the loudspeaker and includes a camera and a camera lens that captures light along an optical axis, wherein the second direction is parallel to the optical axis.
11 . The assembly of claim 7 , wherein the device further comprises a mounting structure configured to mount the body to a housing located between the body and the loudspeaker.
12 . The assembly of claim 11 , wherein the mounting structure comprises a retention ring configured to fit over a portion of the housing.
13 . The assembly of claim 11 , wherein the housing comprises an opening and wherein the mounting structure comprises one or more retention clips configured to be received in an opening of the housing.
14 . The assembly of claim 11 , wherein the mounting structure comprises one or more second apertures formed in the body and one or more fasteners configured to be received in the one or more second apertures.
15 . A method comprising:
providing an apparatus comprising a speaker and a housing, the speaker configured to generate acoustic waves defining an alarm tone, and the housing enclosing the speaker and including at least one first opening, the at least one first opening being located within the housing such that a front chamber is defined between the speaker and the at least one first opening, wherein the acoustic waves exit from the apparatus through the at least one first opening;
providing a device including a body, the body having an aperture, a cavity, and at least one second opening open to atmosphere; and
positioning the apparatus relative to the device to enable the cavity to receive through the aperture the acoustic waves generated by the speaker and allow the acoustic waves to exit from the device through the at least one second opening, so that the aperture, the cavity and the at least one second opening collectively create, with the front chamber and the at least one first opening, a resonator that generates an increased output of the assembly within a frequency range of an output of the speaker corresponding to the alarm tone.
16 . The method of claim 15 , wherein the front chamber and the at least one first opening collectively define a first resonator when the apparatus is used without the device and wherein the resonator defined by the front chamber, the at least one first opening, the aperture, the cavity, and the at least one second opening comprises a second resonator, the method further comprising:
prior to positioning the apparatus relative to the device, determining a resonance frequency of the first resonator, wherein the resonance frequency of the first resonator is different from the resonance frequency of the second resonator and does not fall within the frequency range of the output of the speaker corresponding to the alarm tone; and
based on the resonance frequency of the first resonator, altering the body to raise or lower the resonance frequency of the second resonator, such that the resonance frequency of the second resonator falls within the frequency range of the output of the speaker corresponding to the alarm tone.
17 . The method of claim 15 , further comprising defining one or more parameters of the device such that the aperture, the cavity, and the at least one second opening collectively create, with the front chamber and the at least one first opening, the resonator that generates the increased output of the assembly within the frequency range of the output of the speaker corresponding to the alarm tone.
18 . The method of claim 17 , wherein the at least one second opening comprises a slot and a plurality of openings, wherein the one or more parameters comprise at least one of a volume of the cavity, a length of the slot, or a length of the plurality of the openings, the method further comprising:
when the resonance frequency is to be decreased, increasing at least one of the volume of the cavity, the length of the slot, or the length of the plurality of the openings; and
when the resonance frequency is to be increased, decreasing at least one of the volume of the cavity, the length of the slot, or the length of the plurality of the openings.
19 . The method of claim 17 , wherein the at least one second opening comprises a slot and a plurality of openings, wherein the one or more parameters comprise at least one of a cross-sectional area of the slot, a diameter of the plurality of openings, or a number of the plurality of openings, the method further comprising:
when the resonance frequency is to be decreased, decreasing at least one of the cross-sectional area of the slot, the diameter of the plurality of openings, or the number of the plurality of openings; and
when the resonance frequency is to be increased, increasing at least one of the cross-sectional area of the slot, the diameter of the plurality of openings, or the number of the plurality of openings.
20 . The assembly of claim 7 , wherein the frequency range of the alarm tone falls within a range from 2.0 kHz to 4.0 kHz.
21 . The assembly of claim 15 , wherein the frequency range of the alarm tone falls within a range from 2.0 kHz to 4.0 kHz.