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Class 379/388.04 - Voice control of transmission direction


Subclass of Class 379 - Telephonic communications
Definition: Subject matter having circuitry permitting operation of
No. of patents: 65
Last issue date: 09/20/2011


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NumberTitleIssue Date
8023640Communication apparatus capable of adjusting volume of voice to be reproduced
A communication apparatus through which voice communication can be performed, including: a line interface portion which receives and transmits data form and to a line and which includes a data access arrangement device in which is incorporated a detection circuit th...
09/20/2011
7760868Information processing system
In an information processing system provided with a camera and a microphone, for transmitting and receiving information of a user to and from another information processing system through a transmission line, image data of the user obtained by a camera is stored in ...
07/20/2010
7359856Speech detection system in an audio signal in noisy surrounding
A method of detecting speech in an audio signal comprises a step of obtaining information on the energy of the audio signal, the energy information then being used to detect speech in the audio signal. The method further comprises a step of obtaining information on ...
04/15/2008
7317906AM radio receiver
An AM radio receiver comprises an RF amplifier, a first mixer that converts the RF signal to a first intermediate-frequency signal, a first bandpass filter that band-limits the first intermediate-frequency signal, a second mixer that converts the output from the fir...
01/08/2008
7181000Voice transmission device and voice transmission system
A voice transmission device has a tandem pass through function in an STM, ATM, IP network, and a noise canceller (21) is provided at a latter stage of an echo canceller (12) in a coding part, and in a case where a multistage connection state does not o...
02/20/2007
7145883System and method for gain control of audio sample packets
Determining gain factors for a sequential multiplicity of audio sample packets by first determining a comparison peak value for a present such packet by multiplying a highest sample value by a previously predetermined gain factor, determining a hysteretic peak value...
12/05/2006
7133701Microphone position and speech level sensor
Improper microphone position and speech level on a telephone headset is sensed by comparison of a speech envelope to multiple signal threshold levels. A first threshold is used to determine whether a headset user is talking. A second threshold is used to determine w...
11/07/2006
7123714Speakerphone having improved outbound audio quality
A telephone (310) and a method for providing outbound audio when the telephone is operating in a speakerphone mode. A first data unit (350) including a first unit type identifier (360) can be received by the telephone. The first unit type identi...
10/17/2006
7120575Method and system for the automatic segmentation of an audio stream into semantic or syntactic units
A digitized speech signal (600) is input to an F0 (fundamental frequency) processor that computes (610) a continuous F0 data from the speech signal. By the criterion voicing state transition (voiced/unvoiced transitions) the speech signal is presegment...
10/10/2006
7110801Voice activated wireless phone headset
A voice activated wireless phone headset whereby power control, timer and noise level recognition circuits sample ambient noise/voice levels and at predetermined levels provide an “off-hook” telephone condition. The light weight headset fastens around the ear wi...
09/19/2006
7095846Half duplex device and signal processing method thereof
A half duplex device and signal processing method thereof. First, a signal detection unit of a signal detector of a half duplex device obtains a short-term power and long-term power. Next, a data update unit of the signal detector sets a short-term power threshold a...
08/22/2006
7092365Voice and data exchange over a packet based network with AGC
A signal processing system which discriminates between voice signals and data signals modulated by a voiceband carrier. The signal processing system includes a voice exchange, a data exchange and a call discriminator. The voice exchange is capable of exchanging voic...
08/15/2006
7079645Speaker volume control for voice communication device
A system and method for adjusting the volume level of a communications device in response to ambient noise. In one embodiment, ambient noise is sampled once and the volume of a speaker associated with the communications device is increased to, and maintained at, a l...
07/18/2006
7058190Acoustic signal enhancement system
System and method for automatically measuring and monitoring the quality of acoustic data is disclosed. The system also provides suggestions for corrective actions to the system or user. The method monitors the quality of data and provides feedback to the system or ...
06/06/2006
7054436Communication terminals with a dual use speaker for sensing background noise and generating sound, and related methods and computer program products
Communication terminals, methods, and computer program products are provided that sense background noise via a speaker that is also used to generate sounds. In some methods of operating a communication terminal, and a speaker signal is supplied to a first speaker to...
05/30/2006
7023984Automatic volume adjustment of voice transmitted over a communication device
A system and method for adjusting the volume level of a communications device in response to a voice volume/ambient noise relationship. Ambient noise and voice volume are sampled and compared to a predetermined ambient noise to voice volume relationship. Voice volum...
04/04/2006
7016835Speech and signal digitization by using recognition metrics to select from multiple techniques
A characteristic-specific digitization method and apparatus are disclosed that reduces the error rate in converting input information into a computer-readable format. The input information is analyzed and subsets of the input information are classified according to ...
03/21/2006
6999560Method and apparatus for testing echo canceller performance
A test system measures performance of telephone network echo cancellers using a primary criterion of estimated user annoyance due to audible returned echo. The invention generates live telephone calls, uses real speech samples as stimulus signals and provides tail-c...
02/14/2006
6990193Method of acoustic echo cancellation in full-duplex hands free audio conferencing with spatial directivity
A method is set forth of controlling an acoustic echo canceller at the output of a beamformer in an audio conferencing device. Information is saved to, and retrieved from, memory that characterizes each of a finite number of look directions, or regions of focus, cov...
01/24/2006
6950511Detection of both voice and tones using Goertzel filters
A plurality of Goertzel filters whose operating frequencies are distributed across the voice baseband are used to detect voice and control tones in a signal. Filters operating at frequencies of control tones and detecting that most of the signal energy occurs at tho...
09/27/2005
6947773Method and apparatus for reducing echo feedback in a communication system
A method and apparatus for reducing echo feedback in a wireless communication system (10) is accomplished when a receiving communication unit (24) senses a feedback signal, or echo, via an ancillary communication path. The receiving communication unit ...
09/20/2005
6937718Method and apparatus for personalized conference and hands-free telephony using audio beaming
The present invention is directed to the provision of a personalized speaker phone and hands-free telephony. In particular, the present invention allows communications to be output along a narrowly defined path, rather than being broadcast. In this way, a private vo...
08/30/2005
6754337Telephone having four VAD circuits
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 ...
06/22/2004
6707910Detection of the speech activity of a source
The scope of the present invention is a device for detecting the source of a voice, which device comprises microphone means (2; 2a, 2b, 2M) for receiving a voice signal and detecting means for detecting the voice from the received voice s...
03/16/2004
6700976Noise canceler system with adaptive cross-talk filters
A known cross-talk adaptive noise cancellation apparatus uses two adaptive filters for suppressing the correlated noise in the main signal, which contains wanted voice and unwanted noise, by a reference signal, which contains unwanted noise and wanted voi...
03/02/2004
6564072Radio telecommunication terminal
The invention relates to a mobile radio terminal including an audio transducer (5) an outlet (6) of which is oriented towards the front face of the terminal and provides earpiece, loudspeaker and ringer functions, the terminal further including, coupled t...
05/13/2003
6529587Method for screening active voice mail messages
A method for screening an active incoming voice mail message broadcasts the incoming message in real time on a speaker in or associated with the subscriber's telephone set upon and concurrent with receipt of the same by the voice mail system. Upon detecti...
03/04/2003
6473629Method of displaying alternating transmitting and receiving phases of voice communication in a mobile phone in a speakerphone mode
A method of displaying alternating transmitting and receiving phases of voice communication in a mobile phone with a display when it is operated in the speakerphone mode includes the steps of comparing the intensity of a received voice signal from a calle...
10/29/2002
6381312Acoustic communication terminal apparatus and recording medium for storing a control program therefor
An acoustic communication terminal apparatus for performing data communication over a telephone line by using an acoustic coupler has an error number counter for counting the number of errors occurring during communication. With a control signal based on ...
04/30/2002
6363344Speech communication apparatus and method for transmitting speech at a constant level with reduced noise
An apparatus comprising a noise component removing means for removing specific noise components from input voice, and a level adjusting means for amplifying the voice signal after the removal of the specific noise components to obtain a constant-level out...
03/26/2002
6353732Method for automatically assisting unaided voice communication
Automatic assistance to unaided voice communication is provided by activating and deactivating a wireless communication link as needed (300). A communication device, associated with a particular individual, monitors to determine whether unaided communicat...
03/05/2002
6223154Using vocoded parameters in a staggered average to provide speakerphone operation based on enhanced speech activity thresholds
A portable communication device (104), such as a cellular telephone, is operable in a speakerphone mode. The communication device uses a digital communication scheme, and both receives and generates vocoded signals. The speakerphone provides half duplex o...
04/24/2001
6125288Telecommunication apparatus capable of controlling audio output level in response to a background noise
A method of detecting a noise level from audio signals produced consecutively in time by a microphone. The method includes the steps of evaluating an average level of the audio signals consecutively in time, and selecting the smallest of the average level...
09/26/2000
5867574Voice activity detection system and method
An improved voice activity detection system and method is provided for use in speakerphones and other voice activated systems. To facilitate switching between various operating modes, the voice activity detection scheme utilizes a new voice energy term wh...
02/02/1999
5768364Software speakerphone system and method of operating a speakerphone
In a speakerphone, which operates under software control, transmit and receive signal levels are sampled and compared against one another, with hysteresis, to enable one of two speakerphone modes of operation--either a transmit mode or a receive mode. A s...
06/16/1998
5764753Half-duplex controller
A double-talk detector for an echo canceller includes power estimators (60) and (62) which are utilized to measure the ERLE value in a calculator (64). This ERLE is stored in a register (70) when it is the largest value generated. This register (70) is up...
06/09/1998
5737407Voice activity detector for half-duplex audio communication system
A method of detecting voice in an audio signal comprises the steps of determining an average peak value representing an envelope of the audio signal, determining a running instance of audio signal standard deviation, which corresponds to one of a number o...
04/07/1998
5675641Dual-mode speaker telephone
An apparatus and method for operating a speaker telephone in either full-duplex mode or half-duplex mode. In the absence of an earphone connection, the speaker telephone operates in half-duplex mode to prevent undesired feedback of speaker output to micro...
10/07/1997
5608794Telephone headset in-use indicator
An indicator lamp identifies the status of telephone calls both transmitted and received from a hands-free telephone headset. The indicator lamp is either automatically activated by a signal from a telephone line or manually activated by a switch. Manual ...
03/04/1997
5598466Voice activity detector for half-duplex audio communication system
A method of detecting voice in an audio signal comprises the steps of determining an average peak value representing an envelope of the audio signal, determining a running instance of audio signal standard deviation, which corresponds to one of a number o...
01/28/1997
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