Abstract: A method for calibrating an in-ear headphone to improve the frequency response heard by a user. The method including generating a sound signal and playing the sound signal at a driver when the in-ear headphone is placed within a user's ear canal, receiving a reflected sound signal at a first microphone, generating a frequency response based on the reflected sound signal, generating the user's ear drum response based on the frequency response, generating a second sound signal, modifying the second sound signal based on the user's ear drum response, and playing the modified second sound signal at the driver.

Abstract: A system for providing an audio interface at a mobile device is provided. The mobile device includes an interface programmed detect a loudspeaker system. The mobile device presents, via a user interface, a display screen to receive user input of sweet-spot commands. The mobile devices send sweet-spot parameters to the loudspeaker system in response to the sweet-spot commands.

Abstract: A headphone arrangement includes two earphones, wherein each earphone comprises a housing encompassing a low-frequency transducer and an array of at least three high-frequency transducers. The low-frequency transducer of each earphone is disposed on or over an ear canal of a user when the earphone is worn by the user, and is configured to broadcast low-frequency sound that corresponds to low-frequency components of an input signal. The array of at least three high frequency transducers of each array are configured to broadcast high-frequency sound that corresponds to high-frequency components of the input signal, and the array of at least three high frequency transducers of each array is disposed adjacent to the low-frequency transducer and in a lower rostral quadrant of a full circle around the low-frequency transducer when the earphone is worn by the user.

Abstract: A method for designing a line array loudspeaker arrangement comprises providing a loudspeaker arrangement based on design start parameters and including at least a vertical front array and measuring the frequency responses of the loudspeaker arrangement with bypassed or omitted electronic filters at predefined horizontal angle increments. The method further comprises computing combined beam forming and crossover filter frequency responses for the vertical front array based on the measured frequency responses of the loudspeaker arrangement and first target frequency responses at various frequency points and various positions; and computing combined equalizing and crossover filter frequency responses for the vertical front array based on second target frequency responses, the combined equalizing and crossover filter frequency responses being configured to obtain acoustic linear phase responses of the loudspeaker arrangement.

Abstract: A speaker system may include at least two transducers arranged within an enclosure and horizontally aligned with one another; and a processor configured to apply at least one filter to the transducers to generate beamforming audio content, the processor configured to receive input channels and determine a desired filter impulse response at a first frequency point of the input channels. The processor may also be configured to determine a frequency response of the desired filter impulse response at a first angle, and generate a target function based on the frequency response for application at the first angle.

Abstract: A method for calibrating an in-ear headphone to improve the frequency response heard by a user. The method including generating a sound signal and playing the sound signal at a driver when the in-ear headphone is placed within a user's ear canal, receiving a reflected sound signal at a first microphone, generating a frequency response based on the reflected sound signal, generating the user's ear drum response based on the frequency response, generating a second sound signal, modifying the second sound signal based on the user's ear drum response, and playing the modified second sound signal at the driver.

Abstract: A speaker assembly is provided having a plurality of transducers disposed on a speaker body and configured to produce an audio beam being steerable based on at least one audio beam parameter. A light assembly is arranged on the speaker body and configured to produce a light output that varies based at least one audio beam parameter. The light output varies to provide a visual reference as the audio beam is steered.

Abstract: A speaker system may include at least two transducers arranged within an enclosure and horizontally aligned with one another; and a processor configured to apply at least one filter to the transducers to generate beamforming audio content, the processor configured to receive input channels and determine a desired filter impulse response at a first frequency point of the input channels. The processor may also be configured to determine a frequency response of the desired filter impulse response at a first angle, and generate a target function based on the frequency response for application at the first angle.

Abstract: A speaker assembly is provided having a plurality of transducers disposed on a speaker body and configured to produce an audio beam being steerable based on at least one audio beam parameter. A light assembly is arranged on the speaker body and configured to produce a light output that varies based at least one audio beam parameter. The light output varies to provide a visual reference as the audio beam is steered.

Abstract: A first array of speaker elements is disposed in a cylindrical configuration about an axis and configured to play back audio at a first range of frequencies. A second array of speaker elements is disposed in a cylindrical configuration about the axis and configured to play back audio at a second range of frequencies. A digital signal processor generates a first plurality of output channels from an input channel for the first frequencies, applies the output channels to the first array of speaker elements using a first rotation matrix to generate a first beam of audio content at a target angle about the axis, generates a second plurality of output channels from the input channel for the second frequencies, and applies the second output channels to the second array of speaker elements using a second rotation matrix to generate a second beam of audio content at the target angle.

Abstract: A sound system is provided with a headphone that includes a transducer and at least one microphone. The sound system also includes an equalization filter and a loop filter circuit. The equalization filter is adapted to equalize an audio input signal based on at least one predetermined coefficient. The loop filter circuit includes a leaky integrator circuit that is adapted to generate a filtered audio signal based on the equalized audio input signal and a feedback signal indicative of sound received by the at least one microphone, and to provide the filtered audio signal to the transducer.

Abstract: A digital signal processor is programmed to extract a center channel from a stereo input, apply the center channel to an array of speaker elements using a first set of finite impulse response filters and a first rotation matrix to generate a first beam of audio content at a target angle about the axis, apply a left channel of the stereo input to the array of speaker elements using a second set of finite impulse response filters and a second rotation matrix to generate a second beam of audio content at a first offset angle from the target angle about the axis, and apply a right channel of the stereo input to the array of speaker elements using a third set of finite impulse response filters and third rotation matrix to generate a third beam of audio content at a second offset angle from the target angle about the axis.

Abstract: An audio system is provided. The audio system has a first speaker assembly having a first steerable audio beam and a second speaker assembly having a second steerable audio beam. A control system is in communication with the first and second speaker assemblies and is programmed to receive a sweet-spot input signal indicative of a sweet-spot area having stereo surround sound. The controller commands the first and second speaker assemblies to adjust at least one of parameter of the first and second steerable audio beams so that the second steerable audio beam intersects the first steerable audio beam to form the sweet-spot area at the intersection.

Abstract: A speaker assembly is provided having a plurality of transducers disposed on a speaker body and configured to produce an audio beam being steerable based on at least one audio beam parameter. A light assembly is arranged on the speaker body and configured to produce a light output that varies based at least one audio beam parameter. The light output varies to provide a visual reference as the audio beam is steered.

Abstract: A speaker assembly is provided having a plurality of transducers disposed on a speaker body and configured to produce an audio beam being steerable based on at least one audio beam parameter. A light assembly is arranged on the speaker body and configured to produce a light output that varies based at least one audio beam parameter. The light output varies to provide a visual reference as the audio beam is steered.

Abstract: A digital signal processor is programmed to extract a center channel from a stereo input, apply the center channel to an array of speaker elements using a first set of finite impulse response filters and a first rotation matrix to generate a first beam of audio content at a target angle about the axis, apply a left channel of the stereo input to the array of speaker elements using a second set of finite impulse response filters and a second rotation matrix to generate a second beam of audio content at a first offset angle from the target angle about the axis, and apply a right channel of the stereo input to the array of speaker elements using a third set of finite impulse response filters and third rotation matrix to generate a third beam of audio content at a second offset angle from the target angle about the axis.

Abstract: A first array of speaker elements is disposed in a cylindrical configuration about an axis and configured to play back audio at a first range of frequencies. A second array of speaker elements is disposed in a cylindrical configuration about the axis and configured to play back audio at a second range of frequencies. A digital signal processor generates a first plurality of output channels from an input channel for the first frequencies, applies the output channels to the first array of speaker elements using a first rotation matrix to generate a first beam of audio content at a target angle about the axis, generates a second plurality of output channels from the input channel for the second frequencies, and applies the second output channels to the second array of speaker elements using a second rotation matrix to generate a second beam of audio content at the target angle.

Abstract: A sound system is provided with a headphone that includes a transducer and at least one microphone. The sound system also includes an equalization filter and a loop filter circuit. The equalization filter is adapted to equalize an audio input signal based on at least one predetermined coefficient. The loop filter circuit includes a leaky integrator circuit that is adapted to generate a filtered audio signal based on the equalized audio input signal and a feedback signal indicative of sound received by the at least one microphone, and to provide the filtered audio signal to the transducer.

Abstract: A headphone is provided with a housing and a transducer. The housing has a baffle surface with a recess formed therein and an edge formed about a periphery of the baffle surface. The transducer disposed in the recess and supported by the housing. The headphone is also provided with an ear cushion and a sheet. The ear cushion has a base formed in an annular shape and connected to the housing about the edge and a contact surface spaced apart from the base to engage a portion of a user's head around an outer ear, wherein the ear cushion defines a cavity to collectively form an acoustic chamber with the user's head. The sheet is disposed over the baffle surface with a hole formed therethrough and aligned with the transducer. The sheet is also formed of a sound absorbent material to suppress sound reflections within the acoustic chamber.

Abstract: A sound system is provided with a headphone that includes a transducer and at least one microphone. The sound system also includes an equalization filter and a loop filter circuit. The equalization filter is adapted to equalize an audio input signal based on at least one predetermined coefficient. The loop filter circuit includes a leaky integrator circuit that is adapted to generate a filtered audio signal based on the equalized audio input signal and a feedback signal indicative of sound received by the at least one microphone, and to provide the filtered audio signal to the transducer.