Abstract:
An example method may involve detecting a trigger condition that initiates calibration of a plurality of playback devices. The method may involve sending, to two or more playback devices of the plurality of playback devices, respective commands that instruct the two or more playback devices to repeatedly emit a respective calibration sound according to a sequence and to stagger emission of the calibration sounds such that each emitted calibration sound is delayed relative to a preceding calibration sound in the sequence. The method may involve detecting the emitted calibration sounds via a microphone.
Abstract:
The present invention relates to an electrodynamic loudspeaker assembly which comprises an electrodynamic loudspeaker and first and second compensation filters. The electrodynamic loudspeaker comprises a voice coil arranged in an air gap of a magnetically permeable structure and a compensation coil wound around a portion of the magnetically permeable structure. The first compensation filter of the assembly is configured to filtering an audio input signal to the loudspeaker assembly with a first frequency response to generate a voice coil compensation signal for application to the voice coil. The second compensation filter of the assembly is configured to filtering the audio input signal to the loudspeaker assembly with a second frequency response to generate a second compensation signal for application to the compensation coil. The first and second frequency responses are configured to, across a predetermined audio frequency range, suppress a time-varying or AC magnetic flux in the air gap caused by voice coil current such that magnetic flux modulation in the air gap of the electrodynamic loudspeaker is suppressed.
Abstract:
The present invention relates broadly to a method of digitally filtering an audio signal by applying a composite audio filter. The composite audio filter is obtained by combining a plurality of sample filters to one another where each of the sample filters is provided at respective of a plurality of predetermined frequencies. The method involves applying an averaging curve to each of the sample filters where the width of the averaging curve is adjusted proportional to the frequency of the respective sample filter. This provides an average sample filter for each of the plurality of sample filters and the average sample filters are combined to provide the composite audio filter.
Abstract:
The invention generally relates to acoustic transducers. In certain aspects, the acoustic transducer includes a diaphragm and an actuator. In further aspects, the acoustic transducer includes a connector having a planar proximal end that tapers to a distal end. The proximal end may be coupled to the diaphragm and the distal end coupled to the actuator, such that the actuator causes movement of the diaphragm. In additional aspects, the acoustic transducer incudes a connector having a proximal end that couples to the diaphragm and a distal end that couples to the actuator. The proximal end of the connector can include a damping element. In other aspects, the diaphragm includes a connector, in which the connector tapers to a distal end that is configured to mate with the actuator such that the actuator causes movement of the diaphragm.
Abstract:
본 발명은 음향변환장치에 관한 것으로, 외부로부터 인가되는 전기 신호(음향 신호)의 음압을 사용자 설정에 따라 조절할 수 있는 음압 조절 기능을 지닌 음향변환장치에 관한 것이다. 본 발명인 음압 조절 기능을 지닌 음향변환장치는 프레임, 프레임 내에 설치되는 자기 회로, 전기 신호를 인가받아 자기 회로와의 상호 전자기력에 의해 진동하는 보이스 코일, 보이스 코일의 진동에 의해 진동하며 음향을 발생시키는 진동판, 사용자 설정을 획득하는 설정부, 및 외부로부터 인가되는 전기 신호를 설정부로부터의 사용자 설정에 따라 처리하여 보이스 코일로 인가하는 음압 보정 장치를 포함한다.
Abstract:
The systems and methods described herein relate to, among other things, a transducer capable of producing acoustic and tactile stimulation. The transducer includes a rigid mass element disposed on the diaphragm of a speaker. The mass element may optionally be removable and may have a mass selected such that the resonant frequency of the transducer falls within the range of frequencies present in an input electrical audio signal. The systems and methods advantageously benefits from both the fidelity and audio performance of a full- range speaker while simultaneously producing high-fidelity, adjustable and palpable haptic vibrations.