Abstract: An audio mixer system and method is provided. The audio mixer system includes an audio interface, an audio signal processor, and a control circuit. The control circuit is configured to recognize a source type of an audio signal at the audio interface based on analyzing the audio signal. The control circuit is configured to control a setting of a signal path of the audio signal from an input of the audio interface through the audio signal processor to an output of the audio interface based on the recognized source type.

Abstract: An audio mixing system for providing an audio processing interface at a mobile device may include a mobile device including an interface configured to present a display screen to receive user input to control a remote audio mixer that is operably coupled to at least one musical instrument, transmit, via a wireless network, a mobile device command indicating an audio setting, the command being generated in response to user input, receive, via the wireless network and in response to the mobile device command, first mixer data indicative of audio settings of the remote audio mixer, and present an updated display screen, the updated display screen reflecting the first mixer data as a result of the mobile device command to present a real-time display of the audio settings of the remote audio mixer.

Abstract: An audio mixing console can process at least one audio signal. The audio mixing console includes a main housing with a plurality of outer surfaces. The audio mixing console also includes a wireless transceiver provided substantially outside the main housing and an interface connected to the wireless transceiver. The audio mixing console further includes a radio-frequency permeable housing detachably coupled to a second outer surface of the main housing, wherein the wireless transceiver is positioned within the radio-frequency permeable housing.

Abstract: Techniques for storing and retrieving processing properties for processing an audio signal in an audio processing system, such as, an audio mixing console are provided. The processing properties specify audio effects and/or audio mixing applied to the audio signal. Type information is established which relates to audio content properties of the audio signal. The type information allows classifying audio signals based on their audio content. Based on the type information, processing parameters are stored in a database and/or retrieved from the database.

Abstract: An audio processing apparatus is configured to process audio signals from a plurality of sources. The audio processing apparatus may include a digital interface to receive status data indicating a status of at least one source, and an optical output device having a plurality of groups of graphics display areas which are respectively assigned to one of a plurality of audio channels of the audio processing apparatus. The audio processing apparatus may also include a control device configured to receive the status data, to determine at least one group of graphics display areas based on the received status data, and to control a graphics display area of the determined at least one group to display graphics generated based on the received status data.

Abstract: A method and system is provided for eliminating acoustical feedback in a system. The method determines a parameter for at least one notch filter, adjusting the notch filter based on the parameter, processing the digital signals through the notch filter, testing at the effect of the notch filter in the system, and removing the notch filter if the notch filter is not effective. Also disclosed is a method and system of selecting candidate frequencies which might be feedback, as opposed to other wanted sound frequencies. The selection method sampling the digital signals, converting the time domain digital signal samples by a fast Fourier transform algorithm into the frequency domain, using a ballistics approach to find prominences in the frequency spectrum, and testing the sizes of the prominences.

Abstract: A method and system is provided for eliminating acoustical feedback in a system. The method determines a parameter for at least one notch filter, adjusting the notch filter based on the parameter, processing the digital signals through the notch filter, testing at the effect of the notch filter in the system, and removing the notch filter if the notch filter is not effective. Also disclosed is a method and system of selecting candidate frequencies which might be feedback, as opposed to other wanted sound frequencies. The selection method sampling the digital signals, converting the time domain digital signal samples by a fast Fourier transform algorithm into the frequency domain, using a ballistics approach to find prominences in the frequency spectrum, and testing the sizes of the prominences.

Abstract: A method and system is provided for eliminating acoustical feedback in a system. The method determines a parameter for at least one notch filter, adjusting the notch filter based on the parameter, processing the digital signals through the notch filter, testing at the effect of the notch filter in the system, and removing the notch filter if the notch filter is not effective. Also disclosed is a method and system of selecting candidate frequencies which might be feedback, as opposed to other wanted sound frequencies. The selection method sampling the digital signals, converting the time domain digital signal samples by a fast Fourier transform algorithm into the frequency domain, using a ballistics approach to find prominences in the frequency spectrum, and testing the sizes of the prominences.

Abstract: A method and system is provided for eliminating acoustical feedback in a system. The method determines a parameter for at least one notch filter, adjusting the notch filter based on the parameter, processing the digital signals through the notch filter, testing at the effect of the notch filter in the system, and removing the notch filter if the notch filter is not effective. Also disclosed is a method and system of selecting candidate frequencies which might be feedback, as opposed to other wanted sound frequencies. The selection method sampling the digital signals, converting the time domain digital signal samples by a fast Fourier transform algorithm into the frequency domain, using a ballistics approach to find prominences in the frequency spectrum, and testing the sizes of the prominences.

Abstract: A method and system is provided for eliminating acoustical feedback in a system. The method determines a parameter for at least one notch filter, adjusting the notch filter based on the parameter, processing the digital signals through the notch filter, testing at the effect of the notch filter in the system, and removing the notch filter if the notch filter is not effective. Also disclosed is a method and system of selecting candidate frequencies which might be feedback, as opposed to other wanted sound frequencies. The selection method sampling the digital signals, converting the time domain digital signal samples by a fast Fourier transform algorithm into the frequency domain, using a ballistics approach to find prominences in the frequency spectrum, and testing the sizes of the prominences.

Abstract: A digital power amplifier has a digital signal processor (2) providing a digital signal representative of the original input (I). A pulse width modulation counter (5) applies a pulse width modulated output waveform to the output switching stage (6) which applies an output to a load (L) powered by a power source (7). The power source (7) is coupled to a frequency modulator (8) whose output is arranged to clock the counter (5). In this way, noise components from the power supply (7) are modulated onto the input signal applied to the output switching stage (6) and act to cancel out the noise signals applied to the output stage by the power supply, whereby an output (O) generally free of noise attributable to the power source is produced.

Abstract: A modular tweeter (10) is provided for inductive coupling and location within a host loudspeaker (50). The loudspeaker (50) is conventional having a pole (60) with a surrounding magnet (54) and pole plate (58) defining a gap therebetween and a voice coil (72) wound on a tubular former (64) disposed within the gap (62). The tweeter (10) comprises a diaphragm or dome (14) for producing sound having an electrically conductive skirt (28). The skirted dome (14) is supported by a support member (12) having a surface for attachment to the pole (60) of the loudspeaker and a plurality of points of support (22). A phase plug (16) is located on the opposite side of the dome (14) from the support member (12) and is connected to the support member (12) through an aperture (26) in the dome (14) in such a way that the dome (14) is locked in position whilst being free to vibrate, whereby the tweeter can be assembled before insertion into the host loudspeaker (50).