CALIBRATION OF VIRTUAL HEIGHT SPEAKERS USING PROGRAMMABLE PORTABLE DEVICES
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Accused Products
Abstract
At least part of a speaker calibration process, such as a process of adjusting the gain of a top-firing speaker a virtual height speaker system to compensate for ceiling height and/or ceiling acoustic reflectivity, maybe done using a mobile device (a smart phone, a tablet, etc.) running a mobile device application on a mobile operating system (iOS, Android, etc.). An un-calibrated or minimally calibrated microphone, of the type typically found in mobile devices such as smart phones and tablets, may be used to provide input for such speaker calibration processes.
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Citations
61 Claims
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1-37. -37. (canceled)
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38. A method, comprising:
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receiving an indication to initiate a speaker calibration process; determining a desired acoustic power ratio between a top-firing speaker and a front-firing speaker; providing a first user prompt indicating that a user should position a mobile device in a first location; sending, via a wireless interface of the mobile device, at least one signal indicating that the top-firing speaker should reproduce top-firing speaker acoustic test signals and that the front-firing speaker should reproduce front-firing speaker acoustic test signals; receiving, from a microphone of the mobile device, first electrical signals corresponding to first measured acoustic power of reproduced top-firing speaker acoustic test signals and first measured acoustic power of reproduced front-firing speaker acoustic test signals; computing, based on the electrical signals, a first measured acoustic power ratio, the first measured acoustic power ratio corresponding to a ratio of the first measured acoustic power of the reproduced top-firing speaker acoustic test signals to the first measured acoustic power of the reproduced front-firing speaker acoustic test signals; and determining, based at least in part on the first measured acoustic power ratio, a compensating gain to be applied to the top-firing speaker or the front-firing speaker in order to produce the desired acoustic power ratio. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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46. A non-transitory medium having software stored thereon, the software including instructions for controlling a mobile device to do the following:
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receive an indication to initiate a speaker calibration process; determine a desired acoustic power ratio between a top-firing speaker and a front-firing speaker; provide a first user prompt indicating that a user should position a mobile device in a first location; send, via a wireless interface of the mobile device, at least one signal indicating that a first top-firing speaker should reproduce top-firing speaker acoustic test signals and that a first front-firing speaker should reproduce front-firing speaker acoustic test signals; receive, from a microphone of the mobile device, first electrical signals corresponding to first measured acoustic power of reproduced top-firing speaker acoustic test signals and first measured acoustic power of reproduced front-firing speaker acoustic test signals; compute, based on the electrical signals, a first measured acoustic power ratio, the first measured acoustic power ratio corresponding to a ratio of the first measured acoustic power of the reproduced top-firing speaker acoustic test signals to the first measured acoustic power of the reproduced front-firing speaker acoustic test signals; and determine, based at least in part on the first measured acoustic power ratio, a compensating gain to be applied to the first top-firing speaker or the first front-firing speaker in order to produce the desired acoustic power ratio. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54)
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55. An apparatus, comprising:
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an interface system, including a wireless interface and at least one user interface; a microphone; a display; and a control system capable of; receiving, via the interface system, an indication to initiate a speaker calibration process; determining a desired acoustic power ratio between a first top-firing speaker and a first front-firing speaker; providing, via the display, a first user prompt indicating that a user should position a mobile device in a first location; sending, via the wireless interface, at least one signal indicating that the first top-firing speaker should reproduce top-firing speaker acoustic test signals and that the first front-firing speaker should reproduce front-firing speaker acoustic test signals; receiving, from the microphone, first electrical signals corresponding to first measured acoustic power of reproduced top-firing speaker acoustic test signals and first measured acoustic power of reproduced front-firing speaker acoustic test signals; computing, based on the electrical signals, a first measured acoustic power ratio, the first measured acoustic power ratio corresponding to a ratio of the first measured acoustic power of the reproduced top-firing speaker acoustic test signals to the first measured acoustic power of the reproduced front-firing speaker acoustic test signals; and determining, based at least in part on the first measured acoustic power ratio, a compensating gain to be applied to the first top-firing speaker or the first front-firing speaker in order to produce the desired acoustic power ratio. - View Dependent Claims (56, 57, 58, 59, 60, 61)
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Specification