Abstract: A robot includes first and second microphones and movable portions. The first microphone gathers a first sound reception signal by gathering mainly a target signal. The second microphone gathers a second reception sound signal by gathering mainly noise other than the target signal. The movable portions operate on the basis of the first sound reception signal output from the first microphone and the second sound reception signal output from the second microphone.

Abstract: A hands free system includes: a hands free device on a vehicle; a center device disposed outside of the vehicle; and voice and data circuits. Both of the voice and data circuits are simultaneously coupled between the hands free device and the center device. The hands free device includes a microphone for inputting a voice of a passenger, and transmits a voice signal to the center device through the voice circuit. The center device receives the voice signal, and determines a parameter in relation to voice quality of the voice such that the voice quality is disposed within a predetermined range. The center device transmits the parameter to the hands free device through the data circuit. The hands free device memorizes the parameter so as to transmit the voice in accordance with the parameter.

Abstract: When selecting a specific input source that can be processed by only a second voice-data processing unit instead of an input source currently being processed by a first voice-data processing unit, a voice-data processing circuit selects and delivers an input source selected by a second analog switch to the first voice-data processing unit by using a first analog switch. Then, after the first and second voice-data processing units simultaneously process the identical input source other than the specific input source over a certain time period, the second analog switch selects and delivers the specific input source to the second voice-data processing unit and a first switch selects an output of the second voice-data processing unit and outputs a voice of the specific input source as an analog audio output.

Abstract: An electronic appliance includes a speaker which outputs a first sound wave based on a first voice signal generated from the electronic appliance, and a microphone to detect a second sound wave on which a sound wave generated for control of the electronic appliance is superimposed to output a second voice signal. A first waveform generator generates a first waveform signal based on the first voice signal, and a second waveform generator generates a second waveform signal based on the second voice signal. A waveform shaping unit outputs a third waveform signal in which the first waveform signal is enlarged in a time axis direction, and a subtracter subtracts the third waveform signal from the second waveform signal.

Abstract: The present invention provides a voice coder for voice communication that employs a multi-microphone system as part of an improved approach to enhancing signal quality and improving the signal to noise ratio for such voice communications, where there is a special relationship between the position of a first microphone and a second microphone to provide the communication device with certain advantageous physical and acoustic properties. In addition, the communication device can have certain physical characteristics, and design features. In a two microphone arrangement, the first microphone is located in a location directed toward the speech source, while the second microphone is located in a location that provides a voice signal with significantly lower signal-to-noise ratio (SNR).

Abstract: Techniques to enhance voice signals in a dual microphone system are disclosed. According to one aspect of the present invention, there are at least two microphones that are positioned in a pre-configured array. Two audio signals x1(k) and x2(k) are received and coupled to an adjusting module that is provided to control the gain of each of the audio signals x1(k) and x2(k) to minimize signal differences between the two signals. A separation module is provided to receive matched audio signals x?1(k) and x?2(k) from the adjusting module. The separation module separates the audio signals x?1(k) and x?2(k) to obtain a first audio signal s(k) containing mainly the voice and a second audio signal n(k) containing mainly the noise. An adaptive filtering module is provided to eliminate the noise component in the audio signal s(k) to obtain an estimated voice signal e_s(k) with a higher S/N ratio. Furthermore, the adaptive filtering module can be also configured to suppress echo in the audio signal s(k) at same time.

Abstract: An apparatus and method of generating multi-channel audio signals includes a voice signal removal unit to generate a first signal by removing one or more components of a plurality of frequency bands corresponding to a voice frequency range from an input signal, a voice signal amplification unit to generate a second signal by calculating a sum of channel signals of the input signal and amplifying one or more components of the plurality of the frequency bands corresponding to the voice frequency range of the sum signal, a control filter to generate a third signal by compensating for a level of the first signal, and a multi-channel audio generation unit to generate a center-channel audio signal and a front-channel audio signal using the second, third, and fourth signals.

Abstract: An apparatus and a method of removing voice signals. The apparatus to remove a voice signal includes a band reject filter unit which generates a first signal by partially or wholly removing a plurality of predetermined frequency band components corresponding to a voice frequency band from an input signal, a sound quality compensation unit which generates a second signal by calculating a difference signal of channel signals of the first signal and removing a component corresponding to a predetermined intermediate frequency band, a band pass filter which generates a third signal by passing the predetermined intermediate frequency band of the first signal, and an audio signal generation unit which generates an output audio signal by synthesizing the second and third signals.

Abstract: A remote control system for a locomotive. The remote control system includes a lead controller and follower controller connected to one another over a wireless communication link. The lead controller issues commands over the wireless communication link and those commands are implemented by the follower controller mounted on-board the locomotive. The lead controller is responsive to voice commands uttered by the operator.

Abstract: In the adaptation of hearing devices to specific auditory situations, mistakes can be reduced between detected auditory situations, and individual classifications should be enabled. For this, evaluation data are provided for various predetermined auditory situations, and the hearing device adapted to a hearing device user using individual weighting. The individual weighting thereby ensues via a continuous weighting function that runs via supporting points which respectively represent an individual weighting of the evaluation data of one of the predetermined auditory situations. With this, a continuous and individual adaptation of the hearing device to various auditory situations is possible.

Abstract: A method and apparatus to provision a network node such as a network appliance is described.

Abstract: A multichannel source activity detection system, e.g., a voice activity detection (VAD) system, and method that exploits spatial localization of a target audio source is provided. The method includes the steps of receiving a mixed sound signal by at least two microphones; Fast Fourier transforming each received mixed sound signal into the frequency domain; filtering the transformed signals to output a signal corresponding to a spatial signature of a source; summing an absolute value squared of the filtered signal over a predetermined range of frequencies; and comparing the sum to a threshold to determine if a voice is present. Additionally, the filtering step includes multiplying the transformed signals by an inverse of a noise spectral power matrix, a vector of channel transfer function ratios, and a source signal spectral power.

Abstract: A communication system for communicating between two occupants riding on the same vehicle, or between the driver and the fellow passenger. A helmet that each occupant wears is provided with a microphone and a speaker, respectively. The external contacts of microphone and the speaker are exposed toward the outside of the magnet-side socket, which is one of the sockets of the magnet connector. Each cable extending from the communication unit is provided at the tip with a magnetic-body-side socket, which is the other socket of the magnet connector. The helmet and the cable are connected electrically and mechanically via the magnet connector including the magnet-side socket and the magnetic-body-side socket, which constitutes a pair. The communication unit is connected to the magnet-body-side socket for communicating voices in which a relatively large physiological sound cannot be transmitted.

Abstract: An interface which allows a surgeon to operate multiple surgical devices from a single input device. The input device may be a foot pedal that provides output signals to actuate a number of different surgical devices. The surgical devices may include a robotic arm, a laser, an electrocautery device, or an operating table. The interface has an input channel that is coupled to the input device and a plurality of output channels that are coupled to the surgical devices. The interface also has a select input channel which can receive input commands to switch the input channel to one of the output channels. The select channel may be coupled to a speech interface that allows the surgeon to select one of the surgical devices with a voice command. The surgeon can operate any device by providing an input command which switches the input channel to the desired output channel.

Abstract: In a microphone mounting for a hands-free system in automotive vehicles, the microphone is mounted on the seat belt. In one embodiment the microphone is seated in a sheath which is fastened to the upper belt deflection and through which the belt can freely pass. The sheath consists of two mutually displaceable flat sleeves, of which the lower one accommodates the microphone whose position relative to the passenger's mouth can be adjusted in an optimum way by a mutual displacement of the two sleeves. In another embodiment the microphone is provided at its side facing the belt with contacts that are brought into electrical contact with conducting wires integrated into the belt so as to be connected to the telephone circuit.

Abstract: An interface device for interconnecting fixed controls of a vehicle to a replacement stereo. The interface device is capable of receiving control signals from fixed controls, such as steering wheel controls, backseat controls, handlebar controls, and the like, and then transmitting corresponding control signals to a replacement stereo. In one embodiment, the output signals from the interface device are comprised of wireless signals, such as IR signals. In another embodiment, the interface device is programmable such that the interface device can be programmed to emit signals corresponding to the same signals that would be emitted from a handheld remote control sold in conjunction with an after-market stereo receiver. In another embodiment, the interface device is capable of recognizing spoken voice commands and generating corresponding IR signals in order to effect control of a replacement stereo.

Abstract: A voice acquisition system for a vehicle includes a module attached at an inner surface portion of the windshield of the vehicle. The module includes at least one microphone for receiving audio signals within a cabin of the vehicle and generating an output signal indicative of the audio signals. The microphone may provide sound capture for at least one of a hands free cell phone system, an audio recording system and an emergency communication system. A control is operable to receive the output signal from the at least one microphone and is operable to distinguish the presence of vocal signals from non-vocal signals. The module includes at least one additional accessory. The module attaches at the windshield by at least one of a mechanical attachment and an adhesive attachment.

Abstract: A dual-mode transmission device is provided for use with a radio device configured for either push-to-talk operation or voice-operated operation. The dual-mode transmission device includes a mode selecting apparatus that may be switched between a first position in which a push-to-talk mode is enabled and a second position in which the push-to-talk mode is disabled, allowing a single headset or similar device to be used in either mode.

Abstract: The power voltage supply for a power amplifier is switched between an operational full power mode and a reduced power mode by the switching of a dual state impedance device connected in series between the power amplifier and the power supply. A control circuit detects the level of a signal to be amplified by that amplifier and switches the impedance states thus reducing the power output capability of the power amplifier and placing the power amplifier into a reduced power mode. In one embodiment, the signal is produced by spectrally filtering with a low pass filter, with the cross-over frequency being adjustable. Additionally, the gain of the amplifier can be reduced for high level signals.

Abstract: A command detector detects a control command based on voice input through a telephone or a door phone or the like, and a user and control command identifying section identifies the user and the control command. A command controller decides execution of the control command based on a comparison between a security level set to the control command and to an authority level and a priority level set to the user.

Abstract: The system of the present invention includes an output device for generating media representation of media content extracted from a media receiver. The system includes an extraction module for extracting of media content from the media receiver. The output device generates a representation of media content extracted. Additionally, a media transfer interface permits communication between the output device and the media receiver. The methods of the present invention include a extracting media content from a media receiver, generating a representation of media content, and communicating with the media receiver through a media transfer interface. Methods of the system further include scheduling actions of the media receiver to occur at predefined times, recording and playing media content, and generating a schedule display of media programs by performing optical character recognition on the schedule displayed on a schedule channel.

Abstract: An apparatus and method for transmitting sound are provided. The apparatus includes an external sound receiver for receiving external sounds and converting them into an external sound signal, a volume controller for outputting sound signals only if each of the volumes of the sound signal of a sound producing device and the sound signal of the external sound receiver exceeds a predetermined reference level, and a mixer for mixing the sound signal of the sound producing device with the sound signals output from the volume controller and outputting the result. The apparatus mixes ambient sounds having volume exceeding a certain volume with the sound of a sound producing device and transmits the mixed sounds to a pair of headphones which are a sound receiver for a user, thereby allowing the user to hear an ambient alarm sound while the user is listening to the sound of the sound producing device and making it possible for the user to audibly detect danger. Consequently, the apparatus provides user safety.

Abstract: A microphone attached remote controller mainly comprises a coupling unit, a switch unit, a first control unit, a sensor, a second control unit, an amplifier, and a wireless emitter. When the switch unit is triggered, the first control unit will forward a signal to disable the second control unit and enter a remote control mode, or the first control unit is supposed to have its scanning function temporarily paused and enter a microphone mode for input, amplification, and reproduction of audio signals.

Abstract: A control circuit for an amusement device includes a sound detector, a band-pass filter, a peak integrator and a controller. The sound detector is configured to detect audible sound signals. The band-pass filter is electrically coupled to the sound detector. The band-pass filter is configured to extract sound signals in a predetermined audible frequency range and to output a corresponding filtered signal. The peak integrator is electrically coupled to the band-pass filter. The peak integrator is configured to receive the filtered signal, to average peaks of the filtered signal and to output a trigger signal based on a predetermined range of the averaged filter signal. The controller is electrically coupled to the peak integrator. The controller is configured to receive the trigger signal and to provide a control output in response to the trigger signal.

Abstract: A voice-activated microphone and transceiver system includes an interrogator unit for transmitting a signal, receiving a modulated signal, and demodulating the modulated signal such that the difference between the transmitted signal and the modulated signal correspond to a unique sound wave signal. An acoustically driven microphone unit is also included for receiving the signal from the interrogator unit, modulating the signal with the sound wave signal, wherein the sound wave signal contains instructions for controlling an electronic device, and transmitting the modulated signal back to the interrogator unit for analysis by a signal processor.

Abstract: A voice acquisition system for a vehicle includes a rearview mirror assembly, at least one microphone and a control. The at least one microphone receives audio signals within a cabin of the vehicle and generates an output signal indicative of the audio signals. The at least one microphone provides sound capture for at least one of a hands free cell phone system, an audio recording system and an emergency communication system. The control is operable to receive the output signal from the at least one microphone, and is operable to distinguish the presence of vocal signals from non-vocal signals. The control distinguishes the vocal signals from the non-vocal signals by a ratio of at least 2:1.

Abstract: A multichannel source activity detection system, e.g., a voice activity detection (VAD) system, and method that exploits spatial localization of a target audio source is provided. The method includes the steps of receiving a mixed sound signal by at least two microphones; Fast Fourier transforming each received mixed sound signal into the frequency domain; filtering the transformed signals to output a signal corresponding to a spatial signature of a source; summing an absolute value squared of the filtered signal over a predetermined range of frequencies; and comparing the sum to a threshold to determine if a voice is present. Additionally, the filtering step includes multiplying the transformed signals by an inverse of a noise spectral power matrix, a vector of channel transfer function ratios, and a source signal spectral power.

Abstract: A household appliance, in particular, a ventilator hood, includes a voice operating unit with a microphone and a sensor serving as a motion detector that switches on the microphone only during reception of a signal. Also provided is a method for operating the appliance and hood including the steps of detecting movement of a person or an object with a motion detector generating a signal when motion is detected, switching on a microphone for a prescribed period of time dependent upon the signal, analyzing voice signals detected by the microphone, and passing the detected voice signals to a voice evaluation unit only when a voice is detected and activating a function of the household appliance.

Abstract: Voice activity is detected by comparing a signal with two thresholds and producing data representing the energy of the signal. The data, in binary form, is compared with thresholds to determine voice activity. In accordance with another aspect of the invention, the thresholds are adjusted based upon statistical information. In accordance with another aspect of the invention, the data can be weighted to provide an indication of the quasi-RMS energy of an input signal.

Abstract: A method of identifying talker location includes picking up audio signals using a steerable microphone array and processing the picked up audio signals to determine the location of an active talker. The microphone array is then steered in the direction of the active talker and a cue is generated to identify the direction in which the microphone array has been steered.

Abstract: A hands-free switch device for a wireless intercom includes a signal reception circuit, a sensor, a voice transmission detecting circuit, a manual switch, a determining and controlling unit circuit, a reception/emission switching circuit, a microphone, an earphone, and a speaker. The sensor is adapted for wearing on the user's neck or other parts of the user's body that vibrates when the user speakers. The determining and controlling unit circuit is coupled to the signal reception detecting circuit, the voice transmission detecting circuit and the reception/emission switching circuit such that, when the voice control function is activated, a control signal is generated according to the states of the signal reception detecting circuit and the voice transmission detecting circuit.

Abstract: A speech/music discriminator employs data from multiple features of an audio signal as input to a classifier. Some of the feature data is determined from individual frames of the audio signal, and other input data is based upon variations of a feature over several frames, to distinguish the changes in voiced and unvoiced components of speech from the more constant characteristics of music. Several different types of classifiers for labeling test points on the basis of the feature data are disclosed. A preferred set of classifiers is based upon variations of a nearest-neighbor approach, including a K-d tree spatial partitioning technique.

Abstract: A refueling environment includes a fuel dispenser position having an intercom system that comprises a speaker unit and a microphone unit. The dispenser microphone unit includes an array of directional microphones defining an acoustic coverage pattern tailored to receive voice communications uttered by a customer. A voice-activatable fuel dispenser controller may receive voice-based command signals from the dispenser microphone unit. A POS terminal in the refueling environment includes an intercom system having a speaker unit and a microphone unit. The POS microphone unit includes an array of directional microphones defining an acoustic coverage pattern configured to receive voice communications uttered by a station operator. A packet-based data network provides a communications link between the dispenser intercom system and POS intercom system to establish a voice connection therebetween that supports a Voice over Internet Protocol (VoIP) format.

Abstract: An appliance controller is disclosed that monitors the operation of an appliance and automatically adjusts the appliance in response to predefined audio activity. The disclosed appliance controller includes one or more microphones to capture audio information associated with an appliance. A number of exemplary appliance adjustment rules define various audio features that suggest when an appliance setting should be adjusted. Each rule contains one or more audio features and a corresponding appliance adjustment that should be performed when the rule is satisfied. The appliance adjustment rules can be predefined or dynamically determined from observed user behavior.

Abstract: A voice-activated control system in which a voice command transmitted to an audio signal receiver such as a microphone is digitized by a voice recognition program that produces an address and a function corresponding to the component to which the voice command is directed. The digitized signal is converted by an IR transceiver or an encoder/decoder to an IR signal, which is transmitted via an LCC bus to one or more devices attached to it. The device that has the appropriate address is actuated to perform the function and/or provide feedback to the system. The invention also includes voice-activated systems that rely on a centralized control approach while a third type of system uses a hybrid system that uses both lcc-based and electrical-based input. The present invention is also directed to various methods of activating and controlling one or more components of a system through a voice-activated system.

Abstract: An intra-vehicle communication system includes a surface configured to be mounted to a vehicle interior proximate a first occupant wherein the surface is further configured to display an image of a second occupant of the vehicle. The system further includes an intercom including a microphone supported in close proximity with the surface and a speaker operably coupled to the microphone. In one embodiment, the intercom is further configured to at least partially mute existing audio output from a stereo system.

Abstract: A sound-activated song selection broadcasting apparatus allows users to retrieve and broadcast desired music or songs quickly without repeatedly trial-hearing or wasting time. The apparatus consists of a processing unit, an audio recognition search unit, a sample learning unit, a music processing unit, a human machine interface, a music storing unit, an audio input unit and an audio output unit. Users can find out and retrieve the desired song quickly without trial-hearing every song individually.

Abstract: In a DVE, digital voice enhancement, communication system, the selection decision for choosing which microphone to be active is based on a given function of the speech of a respective talker relative to his/her acoustic environment at the respective microphone. The selection decision is based on a selection technique normalizing at least one of a) different microphone sensitivities and b) different background noise levels at the respective microphones, preferably based on the ratio of how much louder a talker speaks over the background noise at his/her respective microphone.

Abstract: A speech recognition system 7 for an automotive vehicle 10 is provided including a microphone receiver 12 for receiving a voice audio signal and converting the same to an analog signal 13, a microphone aimer for giving the microphone receiver 12 a locational bias for reception, an analog to digital converter 15 for converting the analog signal to a digital signal, a speech recognizer 17 for recognizing a voice from the digital signal received from the analog to digital converter 15, an occupant restraint system 22 having an occupant informational system 60/18 to control deployment of the occupant restraint system 22 resultant upon an occupant condition, an occupant restraint system signal generator 18 for signaling the occupant condition to the microphone aimer to locationally bias the reception of the microphone receiver 12.

Abstract: An automatic squelch is provided within an intercom to control the gating of a microphone signal path. The automatic squelch includes an analog-to-digital converter coupled to receive an analog microphone input signal which is configured to convert the analog microphone input signal into a digital input signal. A peak detector is further provided to maintain a peak value indicative of peaks in the digital input signal. The peak value maintained by the peak detector reacts relatively quickly to changes in the digital input signal. In one implementation, when the digital input signal is larger than the peak value, the peak value is set at the level of the digital input signal. When the digital input signal is less than the peak value, the peak value is “decayed” or reduced at a relatively fast decay rate. A background noise detector is further provided for maintaining a background value indicative of background noise in the digital input signal.

Abstract: A voice attachment control apparatus (1) for a construction machine (80) is provided. The voice attachment control apparatus (1) includes speech analysis means (1a) for speech-analyzing a voice command representative of an instruction by voice regarding a movement of an attachment (401), speech discrimination means (1b) connected to the speech analysis means (1a) for discriminating the instruction of the voice command, machine body control means (1c) connected to the speech discrimination means (1b) and operable of controlling movement of the attachment (401) based on the instruction, and speech synthesis means (1d) for conveying a working situation of the attachment (401) to an operator of the machine body (80). The voice attachment control apparatus (1) uses voice to control starting, stopping and speed adjustment of the attachment (401) to improve the safety of the working person.

Abstract: A mirror-based audio system for a vehicle comprises an interior rearview mirror system including a plurality of microphones for receiving audio signals within a cabin of the vehicle. The plurality of microphones comprise at least two microphones which generate output signals indicative of sound generated within the vehicle cabin. The at least two microphones are (i) positioned within an interior rearview mirror assembly, (ii) positioned adjacent to an interior rearview mirror assembly, (iii) positioned in an attachment to an interior rearview mirror assembly, or (iv) positioned within a module mounted to the windshield. The audio system further includes a control which is operable to distinguish the presence of vocal signals versus non-vocal signals and to at least partially filter out the non-vocal signals.

Abstract: The control system comprises a microphone (7) linked to a receiver block (9) and delivering audio signals to a discriminating block (11) comparing the voice profile of the speaker with a particular authorized speaker profile recorded in a personal chip card (20) of the speaker. The authorized audio signals are then processed in a voice recognition device and an electronic control unit so as to selectively activate one of the actuators (3) of the operating table in response to a specific voice command uttered into the microphone and effected by an effector (16) actuated by the speaker.

Abstract: An apparatus and method for remotely and automatically adjusting the volume of a remotely controlled audio device. In one embodiment, the apparatus comprises a sensor circuit for continuously detecting audio signals generated by the audio device, a difference circuit for determining the difference between the amplitude of the detected audio signals and a reference audio signal amplitude and for outputting a signal that represents this difference, a difference signal transfer circuit having an input for receiving the difference signal and an output wherein the difference signal is coupled to the output when the sensor circuit outputs a signal that indicates an audio signal has been detected, and a control circuit for generating a control signal that effects attenuation, augmentation or maintenance of the amplitude of the audio signals generated by the audio device in accordance with the difference signal when the sensor circuit detects an audio signal.

Abstract: A speech recognition system 7 for an automotive vehicle 10 is provided including a microphone receiver 12 for receiving a voice audio signal and converting the same to an analog signal 13, a microphone aimer for giving the microphone receiver 12 a locational bias for reception, an analog to digital converter 15 for converting the analog signal to a digital signal, a speech recognizer 17 for recognizing a voice from the digital signal received from the analog to digital converter 15, an occupant restraint system 22 having an occupant informational system 60/18 to control deployment of the occupant restraint system 22 resultant upon an occupant condition, an occupant restraint system signal generator 18 for signaling the occupant condition to the microphone aimer to locationally bias the reception of the microphone receiver 12.

Abstract: A technique for controlling power of an audio processor in a monitor, which processes an audio signal from a computer system and outputs the processed audio signal to a speaker, in which an audio processor power control circuit includes: a power supply circuit for supplying operating power to the audio processor; a microcomputer for controlling an operating mode of the monitor according to an operating mode of the computer system and for adjusting an output volume of the audio processor, and a power switching device, operated under the control of the microcomputer, to supply the operating power from the power supply circuit to the audio processor upon the operating mode of the monitor being in a normal mode or a standby mode and to block the operating power from the power supply circuit to the audio processor upon the operating mode of the monitor being in a suspend mode or a power off mode.

Abstract: The power voltage supply for a power amplifier is switched between an operational full power mode and a reduced power mode by the switching of a dual state impedance device connected in series between the power amplifier and the power supply. A control circuit detects the level of a signal to be amplified by that amplifier and switches the impedance states thus reducing the power output capability of the power amplifier and placing the power amplifier into a reduced power mode. In one embodiment, the signal is produced by spectrally filtering with a low pass filter, with the cross-over frequency being adjustable. Additionally, the gain of the amplifier can be reduced for high level signals.

Abstract: A remote control for controlling an electronic device, comprising a microphone for detecting spoken command data, a processor for executing a speech recognition algorithm using template data to recognize spoken commands detected by said microphone and for controlling said electronic device, a receiver to receive template data from an external storage or network to enable the remote control to recognize spoken commands, a memory to store said selected and received template data.

Abstract: With wireless voice activation and recognition car system you're able to control all units and electronic devices in a car on command like the temperature, phone, radio, doors, windows, seat belts, all lights, DVD, screens, speakers, CD audio, CD-ROM, engine, cruise control, speed, and etc. Using the Radio/CD-Telephone System that will be built for this purpose will be able to connect with the 3-lens web cam, a graphical user interface remote screen, an intercom, a 6 CD-changer, a LCD screen with multiple personality, lap top, phone, and a wireless microphone all connected together. Now with the ability of talking through the wireless microphone and listening through the radio speakers for the phone, CD audio, DVD, CD-ROM.

Abstract: A device for controlling connection of a built-in type ear-microphone for a portable radio terminal includes a vocoder, which has the speaker and microphone amplifier of the portable radio terminal and an ear-microphone amplifier; a first logic combination means for logically combining a signal output from the speaker amplifier and a signal output from the ear-microphone amplifier so as to prevent generation of noises due to short-circuit of a microphone signal and a speaker signal while an earphone plug is inserted in an earphone jack; a comparator for comparing an electric signal sensed at the earphone jack with a reference voltage; a second logic combination means for logically combining an output of the first logic combination means and an output of the comparator to generate a jack detection signal; and a central processing unit for generating a control signal for enabling the vocoder to switch an audio signal path to the ear-microphone amplifier, upon detection of the jack detection signal during a call