# US 2025/0097633 A1 · Playback Device with Acoustic Volume Coupling Vent > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0097633 A1 - Document ID: US20250097633A1 - Status: Published application - Kind: A1 - Application number: 18/887,494 - Filed: 2024-09-17 - Published: 2025-03-20 - Earliest claimed: 2023-09-18 - Assignees: Sonos, Inc. - Applicants: Sonos, Inc. - Inventors: Edwin Johnson - Web page: https://patentgrep.com/patent/US20250097633A1 ## CPC - H04R 1/2811: {for loudspeaker transducers} - H04R 1/025: {Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture} - H04R 1/08: Mouthpieces; {Microphones;} Attachments therefor - H04R 1/26: Spatial arrangements of separate transducers responsive to two or more frequency ranges - H04R 1/2803: {for loudspeaker transducers} - H04R 29/001: {for loudspeakers (H04R29/007 takes precedence)} - H04R 1/023: {Screens for loudspeakers} - H04R 2420/07: Applications of wireless loudspeakers or wireless microphones - 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) ## Abstract A playback device includes (i) at least one first transducer, (ii) at least one second transducer, (iii) a housing, and (iv) an acoustic resistive mesh filter. The housing includes (i) a first cavity having a first volume, the first cavity housing the at least one first transducer, (ii) a second cavity having a second volume, the second cavity in fluid communication with the at least one second transducer, and (iii) a vent fluidly coupling the first cavity and the second cavity, the vent defining an aperture having an open area. The acoustic resistive mesh filter is coupled to the vent and positioned to cover the open area of the aperture and thereby resist acoustic flow through the vent. ## Claims ### Claim 1 A playback device comprising: at least one first transducer; at least one second transducer; a housing comprising: a first cavity having a first volume, the first cavity housing the at least one first transducer; a second cavity having a second volume, the second cavity in fluid communication with the at least one second transducer; and a vent fluidly coupling the first cavity and the second cavity, the vent defining an aperture having an open area; and an acoustic resistive mesh filter coupled to the vent and positioned to cover the open area of the aperture and thereby resist acoustic flow through the vent. ### Claim 2 (depends on 1) The playback device of claim 1, wherein the at least one first transducer comprises a loudspeaker, and wherein the at least one second transducer comprises a microphone. ### Claim 3 (depends on 1) The playback device of claim 1, wherein the aperture is circular and comprises a diameter in a range of about 1 millimeter (mm) to about 5 mm. ### Claim 4 (depends on 1) The playback device of claim 1, wherein the acoustic resistive mesh filter is configured for providing at least 40 decibels (dB) of acoustic attenuation at a frequency of 40 hertz (Hz). ### Claim 5 (depends on 1) The playback device of claim 1, wherein the acoustic resistive mesh filter has a specific acoustic impedance of about 3300 MKS Rayls. ### Claim 6 (depends on 1) The playback device of claim 1, wherein the housing is configured for a liquid ingress protection (IP) code of, at least, IPX6. ### Claim 7 (depends on 1) The playback device of claim 1, wherein the acoustic resistive mesh filter is coupled to the housing within the second cavity via an adhesive. ### Claim 8 (depends on 7) The playback device of claim 7, wherein the adhesive comprises an open area that is larger than the open area of the aperture such that the adhesive surrounds the aperture. ### Claim 9 (depends on 1) The playback device of claim 1, wherein the second cavity of the housing comprises a depression surrounding the aperture, and wherein the acoustic resistive mesh filter is positioned within the depression. ### Claim 10 (depends on 1) The playback device of claim 1, wherein the first cavity comprises a volume in the range of about 1000 cm3 to 2000 cm3, and wherein the second cavity comprises a volume in the range of about 20 cm2 to 100 cm2. ### Claim 11 (depends on 1) The playback device of claim 1, wherein the first cavity comprises an input valve for receiving an applied air pressure to the first cavity. ### Claim 12 (depends on 1) The playback device of claim 1, wherein the playback device is a portable playback device and further comprises a battery contained within the housing. ### Claim 13 A method of performing a pressure leak test of a playback device, the playback device comprising: at least one first transducer; at least one second transducer; a housing comprising: a first cavity having a first volume, the first cavity housing the at least one first transducer; a second cavity having a second volume, the second cavity in fluid communication with the at least one second transducer; and a vent fluidly coupling the first cavity and the second cavity, the vent defining an aperture having an open area; and an acoustic resistive mesh filter coupled to the vent and positioned to cover the open area of the aperture and thereby resist acoustic flow through the vent; the method comprising: introducing, via an input valve of the first cavity, a positive air pressure into the first cavity of the housing over a period of time such that the positive air pressure extends into the second cavity via the vent; and measuring an air pressure within the first cavity over the period of time. ### Claim 14 (depends on 13) The method of claim 13, further comprising, based on the air pressure within the first cavity over the period of time, determining an indication of one of a passing liquid ingress test or a failing liquid ingress test. ### Claim 15 (depends on 13) The method of claim 13, further comprising determining estimated liquid ingress performance, based on the air pressure within the first cavity over the period of time. ### Claim 16 (depends on 13) The method of claim 13, wherein the at least one first transducer comprises a loudspeaker, and wherein the at least one second transducer comprises a microphone. ### Claim 17 (depends on 13) The method of claim 13, wherein the aperture is circular and comprises a diameter in a range of about 1 millimeter (mm) to about 5 mm. ### Claim 18 (depends on 13) The method of claim 13, wherein the acoustic resistive mesh filter is configured for providing at least 40 decibels (dB) of acoustic attenuation at a frequency of 40 hertz (Hz). ### Claim 19 (depends on 13) The method of claim 13, wherein the acoustic resistive mesh filter has a specific acoustic impedance between about 3300 MKS Rayls. ### Claim 20 (depends on 13) The method of claim 13, wherein the acoustic resistive mesh filter is coupled to the housing within the second cavity via an adhesive.