A method is disclosed of modification of parameters of audio signals by dividing a digital signal converted from an original analog signal into sound frames, modifying a pitch and a playing rate of the digital signal within a frame and subsequent successive splicing a last modified frame with a first non-modified frame and calculating the mean absolute error to define the best splicing point in terms of producing minimal or no audible noise such that various sections of sound signals can be spli...

In accordance with the present invention, a wet bench processing apparatus equipped with a rapid drain and rinse system is provided. The system stores reserved liquids and air pressure during normal operation for use during a situation where a power or mechanical failure may occur. When such a failure occurs, a controller unit, which is connected to an uninterrupted power supply or other types of energy storage devices, provides an electrical control signal to a solenoid actuated valve. The sole...

A method of forming a capacitor that has improved charge storage capacity in a high density memory device that has shallow trench isolation regions and a capacitor produced by the method are provided. The method includes the step of forming an oxide spacer that consists of a plurality of oxide layers deposited by two alternating methods of thermal CVD and plasma CVD. After a contact hole is first etched by a plasma etching technique, the hole is again decoratively etched by an etchant such as hy...

A method and apparatus for eliminating trapped air from a liquid flow by using a buffer tank and an electrical control box such that substantially all the trapped air are accumulated in the buffer tank and further, when the tank is optionally equipped with a sensor system, the liquid flow can be shut-off when the liquid level in the buffer tank drops below a threshold level to prevent the trapped air from accidentally flowing into a process machine.

A method for forming solder bumps on an electronic structure including the steps of first providing a mold made by a sheet of a mold material having a thickness greater than that of the solder bumps to be formed, the mold material has sufficient optical transparency so as to allow the inspection of a solder material subsequently filled into the mold cavities that are formed in the mold material, and a coefficient of thermal expansion that is substantially similar to the substrate which the mold ...

A remove control device that has voice recognition and user ID restriction functions equipped with a receiver is provided. The device includes a radio frequency (RF) receiving circuit, a demodulator, a voice input control device, an analog to digital conversion signal control unit, a buffer, a memory, a voice recognition processing unit, an instruction verification device, and an output control device. When the receiver is in a voice training mode, the signal characteristics of the voice command...

A method of detachably mounting a heat sink to a lead frame and then an IC die to the heat sink including the steps of first providing a lead frame that has lead fingers and a multiplicity of tie bars extending inwardly from the lead frame, each tie bar has a fixed end integral with the lead frame and a free end equipped with an attachment means, and then providing a heat sink that has a multiplicity of receptacle means adapted to receive the attachment means on the tie bars as well as at least ...

A method of bonding an integrated circuit die to a heat sink by first providing a lead frame that has a die paddle portion having a top surface, a bottom surface, and at least one aperture therethrough, positioning a heat sink abutting the bottom surface of the die paddle portion, and then pressing an integrated circuit die against the top surface of the die paddle portion with an adhesive material sandwiched therein between such that the adhesive flows through at least one aperture in the die p...

A device for providing a pedal operator with tactile indication that a pedal (32) has been depressed to a preselected position includes a cup-like housing (50), a ring-shaped magnet (52) mounted within the housing (50) and a displaceable member (54) provided with a pin (56) engageable by the pedal (32). The pin (56) extends through aligned openings in the magnet (52) and housing (50) and mounts the displaceable member (54) for linear sliding movement on the housing (50). Depression of the pedal ...

A low cost x-ray imaging system for dental radiography employs an intra-oral imaging device comprising a head portion insertable into a patient's mouth and a body portion forming a handle and containing a conventional solid state camera. The head portion employs low cost, commercially available components, including a flourescent film for converting x-ray images into visible light, and a prism or reflecting mirror for redirecting the visible image onto an image pickup such as a CCD array in the ...