Abstract: An electronic audio processing device comprises an input unit, an output unit, and a processor coupled with the input unit and the output unit. The input unit receives foreground and background audio. The processor determines if the volume of the foreground and background audio conforms to a conditional relationship, and accordingly outputs notification signals via the output unit.

Abstract: This invention provides a scanner, which is capable of scanning document images based on a stepping control table and a method to generate such a table. This scanner includes a scanning module to scan a document and generates a responding image signal, a stepping motor to drive the scanning module or the document and a control device to control the operation of the scanning module and the stepping motor. This control device includes a stepping control table, which contains the stepping numbers for the stepping motor to drive the scanning module or the document. While scanning a document, this device will accurately control the stepping motor according to the stepping numbers relating to the locations of the lines to be scanned, and further move the scanning module or the document to a pre-defined position for a scanning task. A design like this will reduce errors in a scanning module's movement caused by the mechanical deviation.

Abstract: An image scanner capable of scanning double-sided documents or of being divided into two single-sided scanners includes a main body with an automatic document feeder and an image capture device, a base, and a flatbed scanner with its own image capture device. The main body can be secured either to the base, in which case a sheet fed single-sided scanner is formed, or to the flatbed scanner, in which case a double-sided scanner is formed. The automatic document feeder eliminates the need for a transparent document thin film guide by using the top surface of the base or of the flatbed scanner to guide a document past the image capture device and onto a guiding plate extending at a non-zero angle from the main body and into a groove in either the base or the flatbed scanner, the groove receiving the guiding plate so that the guiding plate extends into the path of the document to guide the document into an output tray.