# US 12,190,705 B2 · Electronic device with audio system testing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,190,705 B2 - Document ID: US12190705B2 - Status: Granted - Kind: B2 - Application number: 17/944,858 - Filed: 2022-09-14 - Published: 2024-03-14 - Granted: 2025-01-07 - Earliest claimed: 2022-09-14 - Assignees: Apple Inc. - Applicants: Apple Inc. - Inventors: Mruthun Rajkumar Thirumalaisamy; Justin D. Crosby; Mingzhou Li - Web page: https://patentgrep.com/patent/US12190705B2 ## CPC - G08B 21/24: Reminder alarms, e.g. anti-loss alarms - G01S 5/0284: {Relative positioning} - G01S 2205/01: specially adapted for specific applications - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract An electronic device may include an enclosure, an antenna within the enclosure and configured to transmit a wireless signal to a remote electronic device to allow a location of the electronic device to be determined, an audio output system configured to produce an audible output, and a processing system within the enclosure and configured to determine, based on an electrical response induced in the antenna, whether the audio output system fails an audio output performance criteria when provided with an audio signal. ## Claims ### Claim 1 An electronic device comprising: an enclosure comprising a housing member; an antenna within the enclosure and configured to transmit a wireless signal to a remote electronic device to allow a location of the electronic device to be determined; an audio output system configured to produce an audible output and comprising a conductive coil coupled to an interior surface of the housing member, the conductive coil configured to interact with a magnetic field to impart a force on a first the housing member, thereby moving a portion of the housing member to produce the audible output; and a processing system within the enclosure and configured to: determine, based on an electrical response induced in the antenna, whether the induced electrical response is indicative of the conductive coil moving in response to an audio signal being applied to the conductive coil; in accordance with a determination that the induced electrical response is indicative of the conductive coil moving in response to the audio signal, determine that the audio output system satisfies an audio output performance criteria; and in accordance with a determination that the induced electrical response is indicative of the conductive coil receiving the audio signal but not moving in response to the audio signal, determine that the audio output system fails the audio output performance criteria. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein: the conductive coil is a first conductive coil; and the antenna includes a second conductive coil. ### Claim 3 (depends on 1) The electronic device of claim 1, wherein: the antenna is a first antenna; and the electronic device further includes a second antenna. ### Claim 4 (depends on 1) The electronic device of claim 1, wherein determining whether the induced electrical response is indicative of the conductive coil moving in response to an audio signal being applied to the conductive coil comprises determining whether the induced electrical response includes a voltage component attributable to movement of the conductive coil in the magnetic field. ### Claim 5 (depends on 1) The electronic device of claim 1, wherein the antenna encircles the conductive coil. ### Claim 6 (depends on 1) The electronic device of claim 1, wherein the processing system is further configured to determine whether no induced electrical response is detected by the antenna when the audio signal is applied to the conductive coil. ### Claim 7 (depends on 6) The electronic device of claim 6, wherein, in accordance with a determination that no induced electrical response is detected, determine that the audio output system fails the audio output performance criteria. ### Claim 8 An electronic device comprising: a housing member defining an exterior surface of the electronic device; a voice coil coupled to the housing member and configured to receive an audio signal configured to cause the voice coil to move a portion of the housing member to produce an audible output; a conductive coil proximate the voice coil; and a processing system configured to: cause the audio signal to be supplied to the voice coil; detect an electrical response induced in the conductive coil while the audio signal is supplied to the voice coil; determine whether the detected electrical response is indicative of the voice coil moving or remaining stationary in response to the audio signal; in accordance with a determination that the detected electrical response is indicative of the voice coil moving in response to the audio signal, determine that the electronic device satisfies an audio output performance criteria; and in accordance with a determination that the detected electrical response is indicative of the voice coil receiving the audio signal but remaining stationary in response to the audio signal, determine that the electronic device fails the audio output performance criteria. ### Claim 9 (depends on 8) The electronic device of claim 8, wherein determining whether the detected electrical response is indicative of the voice coil moving or remaining stationary in response to the audio signal comprises comparing an electrical signal induced in the conductive coil to an expected electrical signal. ### Claim 10 (depends on 9) The electronic device of claim 9, wherein comparing the electrical signal induced in the conductive coil to the expected electrical signal includes performing a cross-correlation operation. ### Claim 11 (depends on 8) The electronic device of claim 8, wherein the conductive coil is an antenna. ### Claim 12 (depends on 11) The electronic device of claim 11, wherein the antenna is a near-field wireless communication antenna. ### Claim 13 (depends on 8) The electronic device of claim 8, wherein: the electronic device further comprises an accelerometer configured to detect motion of the electronic device; and the audible output is produced in accordance with a determination that the electronic device has moved and has not communicated with a particular remote electronic device for a predetermined duration. ### Claim 14 (depends on 8) The electronic device of claim 8, wherein the determination that the detected electrical response is indicative of the voice coil remaining stationary in response to the audio signal is based at least in part on a lack of an expected voltage variation in the conductive coil when the audio signal is supplied to the voice coil. ### Claim 15 An electronic device comprising: an enclosure; an audio output system configured to produce an audible output; an antenna within the enclosure; and a processing system configured to: operate the antenna in a first mode of operation to transmit a wireless signal to a remote electronic device; operate the antenna in a second mode of operation to detect an electrical signal in the antenna while an audio signal is supplied to the audio output system; and in accordance with a determination that the detected electrical signal in the antenna is indicative of the audio output system moving in response to the supplied audio signal, determine that the audio output system satisfies an audio output performance criteria; and in accordance with a determination that the detected electrical signal is indicative of the audio output system not moving despite receiving the supplied audio signal, determine that the audio output system fails the audio output performance criteria. ### Claim 16 (depends on 15) The electronic device of claim 15, wherein the antenna is a near-field wireless communication antenna. ### Claim 17 (depends on 15) The electronic device of claim 15, wherein the wireless signal includes an identifier of the electronic device. ### Claim 18 (depends on 15) The electronic device of claim 15, wherein: the antenna is a first antenna; and the electronic device further comprises a second antenna configured to send a wireless beacon signal to the remote electronic device to facilitate localization of the electronic device. ### Claim 19 (depends on 18) The electronic device of claim 18, wherein: the electronic device further comprises an accelerometer configured to detect motion of the electronic device; and the audible output is produced in accordance with a determination that the electronic device has moved and has not communicated with a particular remote electronic device for a predetermined duration. ### Claim 20 (depends on 15) The electronic device of claim 15, wherein the audible output is produced to alert a user to a location of the electronic device.