The present invention relates to a wireless microphone system with which a receiver user can transmit sound to a wireless microphone user and with which the sound of the receiver user can be recorded, without a separate communication means or recording means.

An amplifier circuit comprises a first gain circuit path configured to provide a first signal gain to an input signal, a second gain circuit path configured to provide a second signal gain to an input signal, an auxiliary gain circuit path configured to provide an auxiliary signal gain to an auxiliary input signal, wherein the auxiliary signal gain is equal to the first signal gain minus the second signal gain, a summing circuit configured to sum the second gain signal path and the auxiliary signal path, and logic circuitry configured to change an output of the circuit between the first gain circuit path and the sum of the second gain signal path and the auxiliary signal path, and set the auxiliary input signal equal to the input signal before the changing.

This application relates to control of semiconductor devices, in particular MOS devices, so as to reduce RTS/flicker noise. A circuit (100) includes a first MOS device (103, 104) and a bias controller (107). The circuit is operable in at least a first circuit state (P.sub.RO) in which the first MOS device is active to contribute to a first signal (Sout) and a second circuit state (P.sub.RST) in which the first MOS device does not contribute to the first signal. The bias controller is operable to control voltages at one or more terminals of the first MOS device to apply a pre-bias (V.sub.PB1, V.sub.PB2) during an instance of the second circuit state. The pre-bias is applied to set an occupancy state of charge carriers traps within the first MOS device, to limit noise during subsequent operation in the first circuit state. In embodiments, the bias controller is configured so that at least one parameter of the pre-bias is selectively variable in use based on one or more operating conditions.

Described herein is a system and method for substantially automatically establishing secure communications between similar audio devices, comprising: determining that at least two of two or more audio devices in an audio distribution network are similar audio devices, wherein the similar audio devices are manufactured by the same manufacturer and share a common secure communications protocol; designating one of the at least two or more similar audio devices as the controlling audio device; and issuing communications protocols by the controlling device to the remaining similar audio device, wherein the communications protocols are secure communications protocols, and wherein communications between the similar devices from therein after use the secure communications protocols.

Disclosed herein is a system and method for optimizing audio equalization settings based on the type of music being broadcast, comprising: receiving audio at a processing device; performing a frequency analysis of the received audio, to determine a plurality of frequency components and associated amplitudes of the frequency components of the received audio; generating a spectral plot of the received audio based on the performed frequency analysis of the received audio, wherein the spectral plot comprises an x axis that represents relative amplitude and a y axis that represents frequency components of the received audio; comparing the spectral plot of the received audio to each of a plurality of different predetermined spectral plots; matching the spectral plot of the received audio to at least one of a plurality of different predetermined spectral plots; retrieving a predetermined equalizer settings file that corresponds to the at least one of the matched predetermined spectral plots, wherein the predetermined equalizer settings file comprises a plurality of relative amplitude settings for each of a plurality of frequency bands; and applying the retrieved predetermined equalizer settings to an equalizer that processes the received audio according to the predetermined equalizer settings in the predetermined equalizer settings file.

A system and method are described herein for gating at least one input to an amplifier, the method comprising: measuring at least one audio analog signal level received by the amplifier at a first input; determining whether the received at least one audio analog signal level is below a predetermined threshold level; and gating the first input such that the received audio analog signal level is ignored in further processing by the amplifier.

Described herein is a system and method for generating text caption information for an audio-video (AV) signal, the systems and method comprising: receiving an AV signal; extracting audio from the AV signal to form an extracted audio signal; time stamping both the extracted audio signal and the received AV signal; partitioning the extracted audio signal into a first predetermined duration segment of extracted audio signal; generating text captions from the partitioned extracted audio signal over a first duration, and converting the same to a video text signal, with the same time stamp as the extracted audio signal and received AV signal; delaying the received AV signal by an amount of time substantially similar to the first duration; combining the time stamped video text signal and the delayed time stamped received AV signal based on the time stamps; and outputting the combined time stamped video text signal and the time stamped received AV signal to a display.

A system and method are disclosed herein for automatically adjusting an output level of audio in an audio playback network, the method comprising: selecting an audio source to be received into, and output from, an audio playback network; setting a broadcast output volume level of the selected audio source; receiving new audio from any one of a plurality of audio sources, and broadcasting the new audio from one or more loudspeakers; substantially continuously measuring a volume level of the broadcast new audio; and correcting the broadcast new audio to match the set broadcast output volume level.

In accordance with some embodiments of the present disclosure, an apparatus including a crossbar circuit is provided. The crossbar circuit may include a plurality of cross-point devices with programmable conductance, a transimpedance amplifier (TIA), and an analog-to-digital converter (ADC). The TIA is configured to produce an output voltage based on an input current corresponding to a summation of current from a first plurality of the cross-point devices. The ADC is configured to generate a digital output corresponding to a digital representation of the output voltage of the TIA. To generate the digital output, the ADC is to generate, using a comparator, a first plurality of bits (e.g., MSBs) of the digital output by performing a coarse conversion process and a second plurality of bits (e.g., LSBs) of the digital output by performing a fine conversion process on a sample-and-hold voltage produced in the coarse conversion process.

A device includes a memory array and a sense amplifier (SA), which receives bits of data over an input/output (I/O) data line in association with a program operation. A digital-to-analog converter (DAC) is to convert the bits of data to an analog voltage value. A first analog memory element is coupled with the DAC. A pre-charge transistor is coupled with a voltage supply and the first analog memory element, the pre-charge transistor to charge the first analog memory element to an initial voltage level. A second analog memory element is coupled in parallel with the first analog memory element. Transistor logic is coupled between the first analog memory element and the second analog memory element and to selectively enable the second analog memory element to consume charge from the first analog memory element until the first analog memory element stores the analog voltage value.