The U.S. Patent and Trademark Office strictly published an critical postulated obvious for Apple Inc. this week covering their HomePod device invention and privately acoustic change direction.
Patent: (HomePod) Acoustic Change Direction
Apple’s newly postulated obvious covers their invention relating to an audio complement that automatically determines when to electronically adjust a digital audio digest process, that is digest an audio vigilance for acclimatisation into sound by a loudspeaker cabinet, in response to automatically detecting a change in an acoustic sourroundings of a loudspeaker cabinet. The obvious relates to Apple’s HomePod.
An essence of a invention is an audio complement that adjusts how sound is constructed by (by) a loudspeaker cabinet, when there are (or in response to) changes in an acoustic sourroundings in that a loudspeaker cupboard resides. The audio complement includes a loudspeaker cupboard that is configured to furnish sound, a processor, several pairs of microphones, and a non-transitory appurtenance entertaining middle (memory) in that instructions are stored that when executed by a processor automatically perform an acoustic sourroundings change showing process.
Each “pair” of microphones includes a same (or shares a same) inner microphone that is configured to constraint sound inside a orator motorist behind volume of a loudspeaker cabinet, and a opposite outmost microphone that is configured to constraint sound outward a loudspeaker cupboard (but that might still be integrated into a loudspeaker cabinet.)
The non-transitory appurtenance entertaining middle stores instructions that when executed by a processor means a complement to, for any span of microphones, accept (i) a initial microphone vigilance of inner sound prisoner by a inner microphone and (ii) a second microphone vigilance of outmost sound prisoner by a opposite outmost microphone of a pair. The initial and second microphone signals are used to guess a deviation impedance of a loudspeaker cabinet.
A showing metric or deviation impedance metric (also referred to here as a showing value or a deviation impedance metric) is computed, formed on a deviation impedance in a magnitude band. A disproportion between (i) one of a “current” computed showing values compared with a given span of microphones and (ii) a formerly computed showing value compared with a given span of microphones is computed. The routine afterwards adjusts how a audio complement renders an audio vigilance that is to furnish sound by a loudspeaker cabinet, in response to a computed disproportion assembly an acoustic change threshold.
In one embodiment, a acoustic change threshold is comparison formed on a integrity of either a loudspeaker cupboard has been moved. The loudspeaker cupboard can embody (e.g., integrated therein) an sluggishness sensor (e.g., accelerometer, gyroscope, and magnetometer) that detects transformation of a audio cabinet.
Once transformation is detected, a acoustic change threshold might in response be lowered, that creates it some-more expected that a acoustic sourroundings change showing routine will detect a change in a acoustic environment. For instance, if a acoustic change threshold is lowered, afterwards a compulsory disproportion (between a stream computed showing value and a formerly computed showing value) decreases as well, thereby augmenting odds that a audio complement will adjust a rendered audio signal.
This might safeguard that a audio complement performs improved or is improved blending to a presumably altered acoustic sourroundings (e.g., where a loudspeaker cupboard is repositioned within a same room or is altered to a opposite room). The showing of movement, regulating information outlay from a sluggishness sensor, might also be used to bypass a opening of a acoustic sourroundings change showing process. For example, on a integrity that a loudspeaker cupboard has altered over a suit threshold, a audio complement might automatically adjust a rendered audio signal.
Apple’s obvious FIG. 1 shows an instance cylindrical loudspeaker cupboard that includes a sound outlay transducer and 6 microphones.
Apple’s postulated obvious 9,992,595 was creatively filed in Q2 2017 and published on Jun 5, 2018 by a US Patent and Trademark Office.
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