A mobile communications device contains at least two microphones. One microphone is designated by a selector to provide a voice dominant signal and another microphone is designated to provide a noise or echo dominant signal, for a call or a recording. The selector communicates the designations to a switch that routes the selected microphone signals to the inputs of a processor for voice signal enhancement. The selected voice dominant signal is then enhanced by suppressing ambient noise or canceling echo therein, based on the selected noise or echo dominant signal. The designation of microphones may change at any instant during the call or recording depending on various factors, e.g. based on the quality of the microphone signals. Other embodiments are also described.

Multiple microphone switching and configuration

A chemically amplified positive resist composition contains as a base a carboxyl or phenolic hydroxyl group-containing resin soluble in aqueous alkaline solution, in which acid labile groups are incorporated into at least some of the hydrogen atoms on the carboxyl or phenolic hydroxyl groups so that the resin becomes insoluble or substantially insoluble in alkali, wherein the resin contains acid labile groups of at least two types, acid labile groups of one type are acetal or ketal groups, and acid labile groups of the other type are tertiary hydrocarbon groups or tertiary hydrocarbon group-containing substituents. The resist composition remains stable during vacuum standing after exposure to electron beams or soft x-rays, leaves minimal footings on chromium substrates, has an excellent sensitivity and resolution, and is thus suited as a micropatterning material for use in the processing of mask substrates.

Chemically amplified positive resist composition

An electronic device and a control method thereof includes an infrared module which receives an infrared control signal having a predetermined section-specific waveform from an infrared transmitter, a switching unit which turns on/off the infrared module, and a controller which controls the switching unit to alternately turn on and off the infrared module in a predetermined cycle for recognizing the predetermined section-specific waveform of the infrared control signal. Thus, electric power consumed by an infrared module in a standby mode may be reduced while receiving a signal of an infrared transmitter.

Electronic device and control method thereof

Systems, methods, apparatus, and machine-readable media for three-dimensional sound recording and reproduction using a multi-microphone setup are described.

Three-dimensional sound capturing and reproducing with multi-microphones

An application for a device includes at least two speakers and at least two-channels of audio. The at least two-channels of audio are selectively routed to the at least two speakers. Routing of the audio to the speakers is made based upon an orientation of the device. The orientation of the device and therefore the speaker configuration is either manually changed by a viewer input or is automatically detected such as when a hand-held device is rotated, for example, to view a display of the device in portrait mode instead of landscape mode.

System, method and apparatus for speaker configuration

According to one embodiment, A microphone-earphone includes a speaker connected to an acoustic device configured to measure acoustic characteristics of a listener's external auditory canal, and configured to output an acoustic signal toward the listener's external auditory canal, a microphone device disposed outside the listener's external auditory canal, an acoustic tube including one end connected to the microphone device and the other end opening to the listener's external auditory canal, and a housing including an opening portion which accommodates the speaker and is so disposed as to guide sound, which is output from the speaker, to the listener's external auditory canal. An inside diameter of the acoustic tube is less than a diameter of the opening portion.

Electro-acoustic conversion apparatus

A positive resist developer comprising a solution containing a quaternary ammonium hydroxide, a cationic surfactant and a nonionic surfactant

Positive resist quaternary ammonium hydroxide containing developer with cationic and nonionic surfactant

In an electronic apparatus, microphones are arranged parallel to one side of a display screen so as to be spaced apart from each other on the front surface of a display whose display screen is exposed. Together with the microphone, a microphone is arranged parallel to other side different from one side of the display screen. Of the microphones, the microphones are selected when one side of the display screen serves as a bottom, and the microphones are selected when other side of the display screen serves as the bottom. A voice input process is then executed.

Electronic apparatus capable of always executing proper noise canceling regardless of display screen state, and voice input method for the apparatus

According to one embodiment, an acoustic apparatus comprises an electro-acoustic transducer with a first function of converting an electric signal to an acoustic signal and a second function of converting an acoustic signal to an electric signal, the electro-acoustic transducer configured to convert a measuring electric signal to a measuring acoustic signal using the first function, and to convert an acoustic response signal responding to the measuring acoustic signal from an object to an electric response signal using the second function, a switch configured to switch the first function to the second function, or vice versa, and a switch controller configured to control a function switching of the switch in accordance with a sound source signal.

Acoustic apparatus and method of controlling an acoustic apparatus

According to one embodiment, a computer comprises piezoelectric speakers and dynamic speakers. An EC/KBC discriminates whether the computer is driven by an external power or a battery. When the computer is driven by the external power, the EC/KBC permits the driving of the dynamic speakers. When the computer is driven by the battery, the EC/KBC permits the driving of the piezoelectric speakers and prohibits the driving of the dynamic speakers.

Kazuyuki Saito

Papers

Electro-acoustic conversion apparatus

Positive resist quaternary ammonium hydroxide containing developer with cationic and nonionic surfactant

Electronic apparatus capable of always executing proper noise canceling regardless of display screen state, and voice input method for the apparatus

Acoustic apparatus and method of controlling an acoustic apparatus

Electronic apparatus and method of controlling driving of speaker