Abstract:
A system that incorporates the subject disclosure may include, for example, a gaming system that cooperates with a graphical user interface to enable user modification and enhancement of one or more audio streams associated with the gaming system. In embodiments, the audio streams may include a game audio stream, a chat audio stream of conversation among players of a video game, and a microphone audio stream of a player of the video game. Additional embodiments are disclosed.
Abstract:
Power amplifier mode control and an associated switching arrangement permit a wireless communications device, such as a mobile terminal, to advantageously use the same transmitter power amplifier in both digital and analog operating modes. Analog mode requires the mobile terminal to operate its receiver and transmitter in full-duplex mode, thus requiring a duplexer for separating the receive signal from the transmit signal. Digital mode requires the mobile terminal to operate its receiver and transmitter in half-duplex mode, eliminating the need for the duplexer. In a basic implementation, the mobile terminal includes a switching arrangement allowing the duplexer to be switched in and out of the power amplifier transmit path. For reasons of signal requirements and operating efficiency, the mobile terminal adjusts the operating point of the power amplifier such that it operates linearly or quasi-linearly when in the mobile terminal is in digital mode. When in analog mode, the mobile terminal switches in the duplexer and adjusts the operating point of the power amplifier such that it operates non-linearly (saturated). Because the power output increase of the power amplifier in changing from digital mode to analog mode essentially matches the power loss increase of switching in the duplexer, the overall power output of the mobile terminal remains substantially the same.
Abstract:
Power amplifier mode control and an associated switching arrangement permit a wireless communications device, such as a mobile terminal, to advantageously use the same transmitter power amplifier in both digital and analog operating modes. Analog mode requires the mobile terminal to operate its receiver and transmitter in full-duplex mode, thus requiring a duplexer for separating the receive signal from the transmit signal. Digital mode requires the mobile terminal to operate its receiver and transmitter in half-duplex mode, eliminating the need for the duplexer. In a basic implementation, the mobile terminal includes a switching arrangement allowing the duplexer to be switched in and out of the power amplifier transmit path. For reasons of signal requirements and operating efficiency, the mobile terminal adjusts the operating point of the power amplifier such that it operates linearly or quasi-linearly when in the mobile terminal is in digital mode. When in analog mode, the mobile terminal switches in the duplexer and adjusts the operating point of the power amplifier such that it operates non-linearly (saturated). Because the power output increase of the power amplifier in changing from digital mode to analog mode essentially matches the power loss increase of switching in the duplexer, the overall power output of the mobile terminal remains substantially the same.
Abstract:
A voltage converting multiplier circuit converts a single ended input voltage Vgain into a differential output voltage VOUT, and includes a differential input cell (120) and a differential output cell (130), each biased by a respective control current (140, 150). A control circuit includes an input device (R10) having a resistance Rin coupled to an input terminal (110), and a differential amplifier (A2) which controls the differential input cell to maintain a voltage at one end of the input device (R10) equal to a reference voltage VREF, so as to convert the input voltage into an input current dI equal to (VREF-VIN)/R1. A current mirror (160) ensures that the input current is splitted by the branches (123, 124) of the differential input cell (120), which current splitting is mirrored to the differential output cell (130). An output device (R14, R15) (having a resistance ROUT in each branch (134, 133) of the differential output cell (130) converts the differential output current to the differential output voltage VOUT, where VOUT = Vin(Rout/Rin)(Icout/Icin) where Icout and Icin are the control currents applied to the differential input and output cells, respectively. A temperature compensated voltage is achieved where Icin is a constant current and Icout is a temperature compensated current. A temperature compensated variable gain amplifier including the converter circuit is also disclosed.
Abstract:
Embodiments generally relate to controlling music variables. In one embodiment, a method includes determining an initial control position of at least one control member of a hardware control device. The method also includes determining an initial dial position of at least one dial. The method also includes modifying a value of at least one sound variable based on the initial control position, the initial dial position, and movement of the at least one control member.
Abstract:
A system and method of signal combining that supports different speakers in a noisy environment is provided. Particularly for deviations in the noise characteristics among the channels, various embodiments ensure a smooth transition of the background noise at speaker changes. A modified noise reduction (NR) may achieve equivalent background noise characteristics for all channels by applying a dynamic, channel specific, and frequency dependent maximum attenuation. The reference characteristics for adjusting the background noise may be specified by the dominant speaker channel. In various embodiments, an automatic gain control (AGC) with a dynamic target level may ensure similar speech signal levels in all channels.