Abstract:
A tabletop speaker system includes an amplifier, proximity and acceleration detectors, and a processor. The processor is operatively coupled to receive signals from the proximity and accelerometer detectors, and in response to the proximity and acceleration signals, activate various functions local to the tabletop speaker system to operate and control various behaviors or features of the tabletop speaker system. In this way, the tabletop speaker system can respond to user gestures for a very natural control interface.
Abstract:
A device and method are disclosed for modulating a power converter based on an audio signal to directly drive a speaker with a differential audio output signal. A first modulation signal and a second modulation signal are generated based on an input audio signal so that the first and second modulation signals are complementary signals to each other. In one embodiment, a feedback signal, such as an acoustic feedback signal from the speaker, is also used to generate the first and second modulation signals. A power supply voltage is modulated with the first modulation signal to generate a first voltage signal. The power supply voltage is also modulated with the second modulation signal to generate a second voltage signal. The first and second voltage signals form a differential audio signal that is used to drive the speaker. Alternatively, the power converter can drive a speaker with a single-ended output signal.
Abstract:
A speaker system includes a case, an audio input, speakers, an accelerometer, and a computer processor. The audio input is structured to receive a program audio signal from an audio device. The speakers are configured to play an audio output based on the program audio signal, the audio output causing a vibration of the case. The accelerometer is configured to detect the vibration of the case as well as a user tap on the case. The computer processor is configured to identify a user gesture that includes the tap on the case, to identify the tap apart from the case vibration by processing the detected vibration of the case and the detected user tap on the case based on information from the program audio signal to separate the detected user tap from the detected vibration, and to commence a particular function associated with the user gesture.
Abstract:
A device and method are disclosed for modulating a power converter based on an audio signal to directly drive a speaker with a differential audio output signal. A first modulation signal and a second modulation signal are generated based on an input audio signal so that the first and second modulation signals are complementary signals to each other. In one embodiment, a feedback signal, such as an acoustic feedback signal from the speaker, is also used to generate the first and second modulation signals. A power supply voltage is modulated with the first modulation signal to generate a first voltage signal. The power supply voltage is also modulated with the second modulation signal to generate a second voltage signal. The first and second voltage signals form a differential audio signal that is used to drive the speaker. Alternatively, the power converter can drive a speaker with a single-ended output signal.
Abstract:
A tabletop speaker system includes an amplifier, proximity and acceleration detectors, and a processor. The processor is operatively coupled to receive signals from the proximity and accelerometer detectors, and in response to the proximity and acceleration signals, activate various functions local to the tabletop speaker system to operate and control various behaviors or features of the tabletop speaker system. In this way, the tabletop speaker system can respond to user gestures for a very natural control interface.
Abstract:
A speaker system includes a case, an audio input, speakers, an accelerometer, and a computer processor. The audio input is structured to receive a program audio signal from an audio device. The speakers are configured to play an audio output based on the program audio signal, the audio output causing a vibration of the case. The accelerometer is configured to detect the vibration of the case as well as a user tap on the case. The computer processor is configured to identify a user gesture that includes the tap on the case, to identify the tap apart from the case vibration by processing the detected vibration of the case and the detected user tap on the case based on information from the program audio signal to separate the detected user tap from the detected vibration, and to commence a particular function associated with the user gesture.
Abstract:
A speaker system includes a case, an audio input, speakers, an accelerometer, and a computer processor. The audio input is structured to receive a program audio signal from an audio device. The speakers are configured to play an audio output based on the program audio signal, the audio output causing a vibration of the case. The accelerometer is configured to detect the vibration of the case as well as a user tap on the case. The computer processor is configured to identify a user gesture that includes the tap on the case, to identify the tap apart from the case vibration by processing the detected vibration of the case and the detected user tap on the case based on information from the program audio signal to separate the detected user tap from the detected vibration, and to commence a particular function associated with the user gesture.