# US 11,451,902 B1 · Speaker with vented resonator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,902 B1 - Document ID: US11451902B1 - Status: Granted - Kind: B1 - Application number: 17/315,230 - Filed: 2021-05-07 - Granted: 2022-09-20 - Earliest claimed: 2021-05-07 - Assignees: Apple Inc. - Applicants: Apple Inc. - Inventors: Oliver Leonhardt; Logan A. Rotolo; Claudio Notarangelo; Joshua Kim - Web page: https://patentgrep.com/patent/US11451902B1 ## CPC - H04R 1/2826: {for loudspeaker transducers} - H04R 1/2849: {for loudspeaker transducers} - G06F 1/1688: {the I/O peripheral being integrated loudspeakers} - H04R 1/025: {Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture} - H04R 1/2888: {for loudspeaker transducers} - H04R 2499/11: Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract Aspects of the subject technology relate to electronic devices having speakers with vented resonators. A vented resonator may have a resonator chamber and a channel that fluidly couples a front volume of the speaker with the resonator chamber. A vent such as a barometric vent may be disposed in a wall of the resonator chamber that separates the resonator chamber from the back volume of the speaker. The barometric vent may thus allow airflow from the front volume to the back volume via the resonator chamber, and prevent fluid flow from the front volume to the back volume via the resonator chamber. ## Claims ### Claim 1 A speaker, comprising: a front volume; a back volume; a diaphragm separating the front volume from the back volume; a resonator having a port to the front volume and a chamber having at least one wall adjacent the back volume; and a vent in the wall that allows airflow from the front volume to the back volume via the resonator. ### Claim 2 (depends on 1) The speaker of claim 1, further comprising a channel extending between the port and the chamber. ### Claim 3 (depends on 2) The speaker of claim 2, wherein the vent allows the airflow from the front volume to the back volume via the port, the channel, and the chamber. ### Claim 4 (depends on 3) The speaker of claim 3, wherein the chamber is disposed between the channel and the vent. ### Claim 5 (depends on 1) The speaker of claim 1, further comprising a first additional resonator, the first additional resonator having a chamber with a volume that is less than a volume of the chamber of the resonator. ### Claim 6 (depends on 5) The speaker of claim 5, wherein the volume of the chamber of the resonator corresponds to a first resonant frequency, and the volume of the chamber of the first additional resonator corresponds to a second resonant frequency that is higher than the first resonant frequency. ### Claim 7 (depends on 6) The speaker of claim 6, further comprising a second additional resonator having a chamber with a volume that corresponds to a third resonant frequency that is lower than the first resonant frequency and the second resonant frequency. ### Claim 8 (depends on 7) The speaker of claim 7, wherein the first additional resonator is disposed at least partially between the resonator and the second additional resonator. ### Claim 9 (depends on 8) The speaker of claim 8, wherein the second additional resonator is bounded at least in part by a portion of a rear wall of a housing of the speaker. ### Claim 10 (depends on 9) The speaker of claim 9, wherein the second additional resonator includes: a channel that extends between the front volume and the chamber of the second additional resonator, the channel having a horizontal portion that is at least partially defined by a cover member that separates the channel from the front volume, and a vertical portion that extends substantially orthogonally to the horizontal portion; and an acoustic mesh that spans an internal end of the vertical portion of the channel within the chamber. ### Claim 11 (depends on 1) The speaker of claim 1, wherein the vent comprises: an opening in the wall; and a membrane that spans the opening in the wall, wherein the membrane is an air-permeable liquid-resistant membrane. ### Claim 12 An electronic device, comprising: a device housing having an opening; and a speaker having an output port aligned with the opening in the device housing, the speaker, comprising: a front volume; a back volume; a diaphragm separating the front volume from the back volume; a resonator having a port to the front volume and a chamber having at least one wall adjacent the back volume; and a vent in the wall that allows airflow from the front volume to the back volume via the resonator. ### Claim 13 (depends on 12) The electronic device of claim 12, further comprising an additional resonator that includes: a channel that extends between the front volume and the chamber of the additional resonator, the channel having a horizontal portion that is at least partially defined by a cover member that separates the channel from the front volume, and a vertical portion that extends substantially orthogonally to the horizontal portion; and an acoustic mesh that spans an internal end of the vertical portion of the channel within the chamber. ### Claim 14 (depends on 12) The electronic device of claim 12, the speaker further comprising a channel extending between the port and the chamber, wherein the chamber is disposed between the channel and the vent. ### Claim 15 (depends on 14) The electronic device of claim 14, wherein the vent allows the airflow from the front volume to the back volume via the port, the channel, and the chamber. ### Claim 16 (depends on 12) The electronic device of claim 12, wherein the vent comprises: an opening in the wall; and a membrane that spans the opening in the wall, wherein the membrane is an air-permeable liquid-resistant membrane. ### Claim 17 A speaker, comprising: a front volume; a back volume; and a vented resonator having a port to the front volume, a resonator chamber, a channel extending from the port to the resonator chamber, and a barometric vent between the resonator chamber and the back volume. ### Claim 18 (depends on 17) The speaker of claim 17, wherein the vented resonator is formed, in part, by an opening in a wall that defines at least a portion of the resonator chamber, and a membrane that extends over the opening. ### Claim 19 (depends on 18) The speaker of claim 18, wherein the membrane is disposed within the back volume and is attached to a surface of the wall that interfaces with the back volume. ### Claim 20 (depends on 17) The speaker of claim 17, further comprising at least one additional resonator that is fluidly coupled to the front volume and that is fluidly separate from back volume.