Abstract: A memory of a parameter setting apparatus stores therein a current value of a signal processing parameter and an auxiliary value for temporarily adjusting the current value. Once an instruction for changing the current value of the parameter is given by an operation, by a user, of a manual operator when an edit mode is ON, a CPU of the parameter setting apparatus not only changes the current value but also changes the auxiliary value in response to the current value change instruction. When the edit mode is OFF, on the other hand, the CPU changes only the current value in response to the current value change instruction without changing the auxiliary value.

Abstract: A mixing console includes: a plurality of operating regions provided by dividing an operation panel of the mixing console into a plurality of regions, wherein a plurality of channels are allocated to each of the plurality of operating regions. Each of the operating regions includes each of channel selectors, respectively. Each of the channel selectors is configured to select one of the plurality of channels allocated to the operating region corresponding to the channel selector as a selected channel, and to set a plurality of parameters for signal processing on audio signals of the selected channel. Thus, a plurality of selected channels can be selected, and values of the parameters of the plurality of selected channels can be adjusted promptly and in real-time.

Abstract: Apparatus and methods for transceiver calibration are provided. In certain configurations, a transceiver includes a transmit channel and an observation channel. The transmit channel includes a transmit mixer that up-converts a transmit signal by a first or transmit local oscillator frequency. The observation channel includes an observation mixer that down-converts an observed signal from the transmit channel by a second or observation local oscillator frequency that is offset from the first local oscillator frequency. By observing the transmit channel using a local oscillator frequency that is offset relative to the transmit channel's local oscillator frequency, the observation channel can observe transmit channel impairments substantially independently from observation channel impairments.

Abstract: Apparatus and methods for transceiver calibration are provided. In certain configurations, a transceiver includes a transmit channel and an observation channel. The transmit channel includes a transmit mixer that up-converts a transmit signal by a first or transmit local oscillator frequency. The observation channel includes an observation mixer that down-converts an observed signal from the transmit channel by a second or observation local oscillator frequency that is offset from the first local oscillator frequency. By observing the transmit channel using a local oscillator frequency that is offset relative to the transmit channel's local oscillator frequency, the observation channel can observe transmit channel impairments substantially independently from observation channel impairments.

Abstract: A method and apparatus for phase adjustment of a RF transceiver is disclosed. Based on a first local oscillator signal and a second local oscillator signal, a beat signal that indicates the frequency and phase relationship between the first and second local oscillator signals can be generated. Using the beat signal, changing phase relationship between the first and second local oscillator signals can be cumulatively taken account for using phase averaging to allow quick restoration to observation of a previously observed channel.

Abstract: A memory of a parameter setting apparatus stores therein a current value of a signal processing parameter and an auxiliary value for temporarily adjusting the current value. Once an instruction for changing the current value of the parameter is given by an operation, by a user, of a manual operator when an edit mode is ON, a CPU of the parameter setting apparatus not only changes the current value but also changes the auxiliary value in response to the current value change instruction. When the edit mode is OFF, on the other hand, the CPU changes only the current value in response to the current value change instruction without changing the auxiliary value.

Abstract: A mixing console includes: a plurality of operating regions provided by dividing an operation panel of the mixing console into a plurality of regions, wherein a plurality of channels are allocated to each of the plurality of operating regions. Each of the operating regions includes each of channel selectors, respectively. Each of the channel selectors is configured to select one of the plurality of channels allocated to the operating region corresponding to the channel selector as a selected channel, and to set a plurality of parameters for signal processing on audio signals of the selected channel. Thus, a plurality of selected channels can be selected, and values of the parameters of the plurality of selected channels can be adjusted promptly and in real-time.