Abstract: A signal processing system and method is disclosed for applying time-based effects to an N-channel audio input signal for reproduction on a set of loudspeakers having a predetermined configuration. A first M-channel audio signal is produced from the N-channel audio input signal. Each channel of the first M-channel audio signal is associated with a subset of the loudspeakers. A second M-channel audio signal is produced from the first M-channel audio signal according to an M×M matrix, each element aij in the M×M matrix including a delay term. A minimum value of the delay term in each element aij is determined according to a distance between at least two loudspeakers in at least one of the i and j subsets of loudspeakers and according to minimum delay value of a time-based delay effect applied to each channel of the second M-channel audio signal. A K-channel audio signal is then produced from the or each second M-channel audio signal.

Abstract: A system includes a bus system to connect a number of components in a chain-like structure. A first control device (e.g., microcontroller or microprocessor) is configured to control the components in a first mode of the system. A second control device (e.g., microcontroller or microprocessor) is configured to control a first subset of the components in a second mode of the system.

Abstract: In accordance with an embodiment, a method of transferring data includes determining, by a first device, a data check field of a data frame based on a predetermined identification field and a plurality of data bits, wherein the predetermined identification field represents at least one of a content, source or target of the plurality of data bits; and transmitting, by the first device to a second device, the data frame comprising the plurality of data bits and the data check field without directly transmitting the predetermined identification field.

Abstract: In accordance with an embodiment, a method includes using a monitoring circuit disposed on a monolithic integrated circuit to monitor an output signal of a first switching transistor for a first output edge transition at a monitoring terminal of the monolithic integrated circuit; using a time measuring circuit disposed on the monolithic integrated circuit to measure a first time delay between a first input edge transition of a first drive signal and the first output edge transition, where the first drive signal is configured to cause a change of state of the first switching transistor; using an analysis circuit disposed on the monolithic integrated circuit to compare the measured first time delay with a first predetermined threshold to form a first comparison result; and indicating a first error condition based on the first comparison result.

Abstract: A method includes detecting in a communication bus a write command to a first circuit and comparing a write address of the write command with a set of safe addresses. When the write address matches a safe address of the set of safe addresses, an error correction code (ECC) is generated based at least on write data of the write command, and the ECC is stored in a memory of a parameter safe storage circuit. A read command to the first circuit is detected in the communication bus, a read address of the read command is compared with the set of safe addresses, and, when the read address matches a safe address of the set of safe addresses, it is determined whether read data of the read command is corrupted based on the stored ECC, and an error notification is provided when the read data is determined to be corrupted.

Abstract: In accordance with an embodiment, a method of transferring data includes determining, by a first device, a data check field of a data frame based on a predetermined identification field and a plurality of data bits, wherein the predetermined identification field represents at least one of a content, source or target of the plurality of data bits; and transmitting, by the first device to a second device, the data frame comprising the plurality of data bits and the data check field without directly transmitting the predetermined identification field.

Abstract: Supply voltage switching circuitry that is configured to dynamically switch between a battery supply voltage and a boost supply voltage, that is generated from the battery supply voltage, to power half-bridge driver circuitry based on an on-going evaluation of one or more system parameters. The supply voltage switching circuitry is configured to deliver the boost supply voltage to high-side driver circuitry. The supply voltage switching circuitry is configured to select between delivering the boost supply voltage to low-side driver circuitry and delivering the battery supply voltage to low-side driver circuitry.

Abstract: The invention relates to a sound broadcasting device comprising a high-frequency section including at least one high-frequency acoustic source (SHF), and a medium-frequency section including at least two medium-frequency sources (SMF), the acoustic sources (SHF, SMF) being vertically superposed, where the medium-frequency section comprises a lower sub-section, arranged below the high-frequency section and comprising at least one medium-frequency acoustic source (SMF), and an upper sub-section, arranged above the high-frequency section and comprising at least one medium-frequency acoustic source (SMF), where the vertical directivity of the high-frequency section has an incline, relative to the horizontal (H), that is substantially equal to the incline (?MF) of the vertical directivity of the medium-frequency section relative to the horizontal (H), so that the overall vertical directivity of the device has a non-zero incline (?Dir) relative to the horizontal (H).

Abstract: A method includes applying a current to an input pin of an integrated circuit; converting an analog signal at the input pin to a digital stream using a Sigma-Delta modulator; converting the digital stream to a first digital output signal proportional to the analog signal in a first input range between a first analog signal value and a second analog signal value, where the first input range corresponds to a pre-determined range of the analog signal smaller than a full-scale input range of the analog signal; converting the digital stream to a second output signal; comparing the second output signal to a first threshold corresponding to a third analog signal value at the input pin that is outside of the first input range; and providing an indication of an open circuit condition at the input pin when the second output signal crosses the first threshold.

Abstract: A system includes a bus system to connect a number of components in a chain-like structure. A first control device (e.g., microcontroller or microprocessor) is configured to control the components in a first mode of the system. A second control device (e.g., microcontroller or microprocessor) is configured to control a first subset of the components in a second mode of the system.

Abstract: In accordance with an embodiment, a method includes generating a clock signal; generating a switching signal based on the clock signal; generating a synchronization signal having an edge transition corresponding to a predetermined phase of the switching signal; transmitting the synchronization signal to a master controller; receiving a frequency adjustment command from the master controller based on the transmitted synchronization signal; and adjusting a frequency of the clock signal based on the frequency adjustment command.

Abstract: A system includes multiple devices connected in a chain-like structure, each device of the multiple devices coupled to at least one bus. A device of the plurality of devices includes a circuit configured to detect activity of a differential signal of a bus coupled to the device to cause a wakeup of the device in response to the detection.

Abstract: A system includes a bus system to connect a number of components in a chain-like structure. A first control device (e.g., microcontroller or microprocessor) is configured to control the components in a first mode of the system. A second control device (e.g., microcontroller or microprocessor) is configured to control a first subset of the components in a second mode of the system.

Abstract: A drive circuit includes an internal oscillator and a pre-drive controller coupled to the internal oscillator. The pre-drive controller can have a switch control output configured to be coupled to a switch input. The pre-drive controller can receive switch control data, receive a clock signal, receive a synchronization signal, synchronize the internal oscillator based on the clock signal and the synchronization signal, and generate a pulse modulated switching signal at the switch control output based on the switch control data and the internal oscillator.

Abstract: A method for producing a multi-channel audio signal from one or more sound object signals is disclosed, where, for each sound object signal a plurality of width signals is produced, the amplitudes of the width signals following a substantially Gaussian distribution. The width signals are processed to produce a plurality of pan signals which are mapped to at least one channel. Each channel in the audio signal is produced by combining the pan signals from each sound object. An apparatus for reproducing such a multi-channel audio signal is also disclosed, in which a plurality of first loudspeakers are provided spaced around a first arc forward of a predetermined listening zone, each of the first loudspeakers facing towards the listening zone and substantially equidistant therefrom. A plurality of second loudspeakers are provided spaced around a second arc behind the listening zone, each of the second loudspeakers facing towards the listening zone.

Abstract: Supply voltage switching circuitry that is configured to dynamically switch between a battery supply voltage and a boost supply voltage, that is generated from the battery supply voltage, to power half-bridge driver circuitry based on an on-going evaluation of one or more system parameters.

Abstract: The present invention relates to a device for measuring an electric current generated by an acoustic amplifier in order to actuate an acoustic speaker comprising: a resistor (1) positioned in series between the amplifier and the speaker; a voltage-to-current converter (3), the inputs of which are connected to the terminals of the resistor (1), and which proportionally converts the difference in voltage across the terminals of the shunt to a signal current; a first current mirror (7), the input of which is connected to the output of the voltage-to-current converter (3) and the output of which is connected to a current-to-voltage converter (5); a constant bias current generator (9) connected to an input of the voltage-to-current converter (3) and the output of which is connected to the current-to-voltage converter (5) via a second current mirror (11), and capable of generating a bias current such that the device operates in linear mode and without saturation regardless of the electric current generated by th

Abstract: A drive circuit includes an internal oscillator and a pre-drive controller coupled to the internal oscillator. The pre-drive controller can have a switch control output configured to be coupled to a switch input. The pre-drive controller can receive switch control data, receive a clock signal, receive a synchronization signal, synchronize the internal oscillator based on the clock signal and the synchronization signal, and generate a pulse modulated switching signal at the switch control output based on the switch control data and the internal oscillator.

Abstract: The disclosure includes a sound system comprising at least one Digital Signal Processor control module, acting on a signal to the high-frequency transducer and on a signal to a mid-frequency transducer so as to apply, in a common frequency range, at least one magnitude parameter as well as at least one phase parameter so as to produce a directivity along the same angular sector as a directivity produced by the orientable shutters.

Abstract: The present invention relates to a device for measuring an electric current generated by an acoustic amplifier in order to actuate an acoustic speaker comprising: a resistor (1) positioned in series between the amplifier and the speaker; a voltage-to-current converter (3), the inputs of which are connected to the terminals of the resistor (1), and which proportionally converts the difference in voltage across the terminals of the shunt to a signal current; a first current mirror (7), the input of which is connected to the output of the voltage-to-current converter (3) and the output of which is connected to a current-to-voltage converter (5); a constant bias current generator (9) connected to an input of the voltage-to-current converter (3) and the output of which is connected to the current-to-voltage converter (5) via a second current mirror (11), and capable of generating a bias current such that the device operates in linear mode and without saturation regardless of the electric current generated by th