Abstract: A multi-channel signal encoding method includes obtaining a multi-channel signal of a current frame; determining an initial multi-channel parameter of the current frame; determining a difference parameter based on the initial multi-channel parameter of the current frame and multi-channel parameters of previous K frames of the current frame, where the difference parameter represents a difference between the initial multi-channel parameter of the current frame and the multi-channel parameters of the previous K frames, and K is an integer greater than or equal to one; determining a multi-channel parameter of the current frame based on the difference parameter and a characteristic parameter of the current frame; and encoding the multi-channel signal based on the multi-channel parameter of the current frame.

Abstract: An inter-channel phase difference (IPD) parameter extraction method includes obtaining a parameter for obtaining an information extraction manner for a current frame of a multi-channel signal; obtaining an IPD parameter extraction manner for the current frame based on the parameter for obtaining the information extraction manner, where the obtained IPD parameter extraction manner is one of at least two preset IPD parameter extraction manners; and obtaining an IPD parameter of the current frame based on the obtained IPD parameter extraction manner for the current frame.

Abstract: Disclosed is an ultra-high-power cementing apparatus integrated with remote control, belonging to the field of petroleum equipment. The apparatus includes a loading system, and a secondary beam on which a hydraulic system, a power transmission system, a metering tank, an electrical system, a gas path system, a manipulation system and a mixing system are successively connected from front to rear, wherein a lower portion of the gas path system is provided with a plunger pump that is connected to a high-pressure discharge system; and a lower portion of the electrical system is provided with a manipulation platform, the manipulation system being located above the manipulation platform, and the manipulation system being connected to a remote control system.