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Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
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| Number | Title | Issue Date |
| 8189765 | Multichannel echo canceller A multichannel echo canceller according to the present invention includes an echo cancellation section which receives loudspeaker input signals sp1, sp2 including a second acoustic signal to be respectively inputted to a plurality of loudspeakers 10... | 05/29/2012 |
| 8170199 | Echo canceller In a speech communication device capable of bidirectional communication, a clock deviation between the speaker side (the receiving side) and the microphone side (the transmitting side) is detected, and based on the above deviation, either a first frequency signal (s... | 05/01/2012 |
| 8116448 | Acoustic echo canceler An echo canceler is constituted of an adaptive filter for generating an echo replica simulating an echo occurring in an echo path lying between a speaker and a microphone, a subtracter for subtracting the echo replica from the sound received by the microphone, a dou... | 02/14/2012 |
| 8094809 | Frame-based level feedback calibration system for sample-based predictive clipping A feedback calibration system and a method for controlling an electronic signal are disclosed. The feedback calibration system includes an input controller adapted to modify an input signal in response to a control signal and generate a modified input signal, a sign... | 01/10/2012 |
| 8090093 | Echo canceller An echo canceller which can respond to a sudden change in echo characteristics in real time and does not require an alteration outside the echo canceller, includes a smoothed sending-speech signal calculation means for calculating a smoothed sending-speech signal fr... | 01/03/2012 |
| 8073131 | Portable device case with corner protector A case for a portable electronic device such as cell phones, cameras, MP3 players and PDAs wherein said case includes material at the corners to provide protection to the electronic device. To reduce bulk at the corners and allow the material forming the case to con... | 12/06/2011 |
| 8073132 | Echo canceler and echo canceling program An echo canceller uses an adaptive filter to remove an echo of an incoming far-end signal from an outgoing near-end signal. Filter coefficients are calculated and updated while the far-end signal is active so as to minimize the residual echo. In addition, the far-en... | 12/06/2011 |
| 8036376 | Echo prevention circuit having adaptive digital filter An echo prevention circuit comprises a first and second FIR filters into which a first input signal is input through an input terminal; an input/output terminal to which an output signal of the first FIR filter is output and the output signal reflected is input or a... | 10/11/2011 |
| 8014516 | Method and apparatus for echo cancellation An exemplary embodiment of an echo cancellation circuit is provided, for use in a voice interaction device simultaneously outputting a remote signal while receiving a local signal. The local signal may comprise an echo generated from the remote signal. A first filte... | 09/06/2011 |
| 7970122 | Circuit method and system for transmitting information Disclosed is a method and circuit for echo suppression or cancellation. According to some embodiments of the present invention, there is provided a circuit including a Noise-Enhanced-Receiving-Direction unit and Narrow-Band Remover unit or units. ... | 06/28/2011 |
| 7925006 | Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus Stereo sound signals are reproduced directly from loudspeakers (SP(L), SP(R)). By using a sum signal and a difference signal of the stereo sound signals as a reference signal, and according to a cross spectrum calculation of the reference signal with a microphone-co... | 04/12/2011 |
| 7881459 | Acoustic echo canceller using multi-band nonlinear processing An echo canceller (106) can include a first multi-band filter (152) which receives a first input signal (108) and generates a first plurality of sub-band signals (110, 111, 112), and a second multi-band filter (154) which receives ... | 02/01/2011 |
| 7860235 | Echo suppressor A received power calculating section and a sending power calculating section calculate a received power value Rcv_Power(t) and a sending power value Snd_Power(t) by respectively adding predetermined gain values when the received power calculating section and the sen... | 12/28/2010 |
| 7831035 | Integration of a microphone array with acoustic echo cancellation and center clipping Center clipping is applied with acoustic echo suppression in a two-way voice communication system to reduce a microphone signal to the background noise floor when speech is not present. For integration with a microphone array, the center clipping processing determin... | 11/09/2010 |
| 7822192 | Sound event processing with echo analysis Apparatus, methods, and machine-readable articles of manufacture enable a telephone system to distinguish between actual events and echoes. Events may include conferees' voice and DTMF commands. In selected embodiments, the system categorizes an event received on on... | 10/26/2010 |
| 7809129 | Acoustic echo cancellation based on noise environment A method (200) of cancelling echo in a duplex communication device (100). The method can include detecting a level of noise present on an uplink signal path (104), generating a noise classifier (194) based on the detected level of noise, ... | 10/05/2010 |
| 7773741 | Voice and data exchange over a packet based network with echo cancellation 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... | 08/10/2010 |
| 7769162 | Acoustic echo canceller with multimedia training signal In an electronic device having an acoustic echo canceller and being capable of implementing audio applications and at least one of a conferencing application and a telephony application, there is provided a background training method for the acoustic echo canceller.... | 08/03/2010 |
| RE41445 | Arrangement for suppressing an interfering component of an input signal In an acoustic echocanceller (6), an estimate of an echo signal is determined by an adaptive filter (10) and is subtracted from the input signal by a subtracter (14). The spectrum estimator (12) determines the frequency spectrum of the es... | 07/20/2010 |
| 7747001 | Speech signal processing with combined noise reduction and echo compensation A speech signal processing system combines acoustic noise reduction and echo cancellation to enhance acoustic performance. The speech signal processing system may be used in vehicles or other environments where noise-suppressed communication is desirable. The system... | 06/29/2010 |
| 7742592 | Method and device for removing echo in an audio signal Acoustic echo control and noise suppression is an important part of any “handsfree” telecommunication system, such as telephony or audio or video conferencing systems. Bandwidth and computational complexity constraints have prevented that stereo or multi-channel... | 06/22/2010 |
| 7672445 | Method and system for nonlinear echo suppression Techniques for suppressing large echo due to nonlinearity, instable adaptive filter, and so on. An echo cancellation system includes an echo canceller unit, a nonlinear echo detection unit, and a nonlinear echo suppression unit. The echo canceller unit (e.g., an ada... | 03/02/2010 |
| 7672446 | Echo processing method and device The invention concerns a method and device for processing echo between at least two communication devices in order to attenuate, in a picked-up signal of a communication device comprising at least one microphone, the components of the signal broadcasted by at least ... | 03/02/2010 |
| 7532717 | Echo canceler with automatic gain control of echo cancellation signal An echo canceler removes the echo of a receive signal from a transmit signal while also controlling the signal level of the transmit signal. The echo canceler generates signal level data for the transmit signal, updates the signal level data when the transmit signal... | 05/12/2009 |
| 7480377 | Dual adaptive filter apparatus and method A method and apparatus for adapting dual filters is disclosed. In one aspect, a method may include transforming a signal, adapting a first adaptive filter based on the transformed signal, estimating a delay of an impulse response based on the adaptation of the first... | 01/20/2009 |
| 7471788 | Echo cancellers for sparse channels The present invention is an echo canceller for sparse channels in an echo channel. The echo channel receives a far-end input and a near-end input. An enable generator asserts a sparse update enable in response to detecting at least one of the double talk condition a... | 12/30/2008 |
| 7454011 | ADSL communication system having echo canceller and method for downloading filter coefficient of the echo canceller The present invention provides an asymmetric communication system having an echo canceller and a method for downloading a filter coefficient to the echo canceller. The echo canceller is a kind of a finite impulse response (FIR) filter for calculating a correlativity... | 11/18/2008 |
| 7450713 | Echo canceller employing dual-H architecture having improved non-linear echo path detection An echo canceller circuit for use in an echo canceller system is set forth that provides sensitive non-linear echo path response detection. The echo canceller circuit comprises a first digital filter having non-adaptive tap coefficients to simulate an echo response ... | 11/11/2008 |
| 7436787 | Transceiver for full duplex communication systems A transceiver in a full duplex communication system includes a transmitting circuit coupled to a channel for transmitting a transmit signal to the channel, a cancellation signal generator coupled to the channel for generating a cancellation signal according to the t... | 10/14/2008 |
| 7433463 | Echo cancellation and noise reduction method A method and system for clear signal capture comprehend several individual aspects that address specific problems in improved ways. In addition, the method and system also comprehend a hands-free implementation that is a practical solution to a very complex problem.... | 10/07/2008 |
| 7428304 | Method and apparatus for detecting subscriber alerting signal tones and customer premises equipment alerting signal tones to non-echo canceling modems A non-echo canceling voice band modem capable of detecting subscriber alerting signal (SAS) tones and customer premises equipment alerting signal (CAS) tones is provided. The modem includes a shaping filter, an analog-to-digital converter (ADC), a SAS tone detector,... | 09/23/2008 |
| 7424109 | Rapid training echo cancellor for telecommunications system Plural echo cancellors each are tuned for different hybrid delays until it is established which echo cancellors are operating to cancel echos. The echo cancellors not so operating are then terminated. ... | 09/09/2008 |
| 7420937 | Selectively adaptable far-end echo cancellation in a packet voice system A packet voice transceiver adapted to reside at a first end of a communication network and to send an ingress communication signal comprising voice packets to, and receive an egress communication signal comprising voice packets from, a second packet voice transceive... | 09/02/2008 |
| 7408891 | Echo canceller employing H-register and storage register An echo canceller comprising a digital filter having adaptive coefficients which are updated to simulate an echo response, a temporary register for storing default coefficients, and a controller for monitoring ERLE and in the event the ERLE is greater than a first p... | 08/05/2008 |
| 7403610 | Echo canceller employing dual-H architecture having split adaptive gain settings An echo canceller circuit is set forth. The echo canceller circuit includes a digital filter having adaptive tap coefficients to simulate an echo response occurring during a call. The adaptive tap coefficients are updated during the call using a Means Squares proces... | 07/22/2008 |
| 7403609 | Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus Stereo sound signals are reproduced directly from loudspeakers (SP(L), SP(R)). By using a sum signal and a difference signal of the stereo sound signals as a reference signal, and according to a cross spectrum calculation of the reference signal with a microphone-co... | 07/22/2008 |
| 7391877 | Spatial processor for enhanced performance in multi-talker speech displays Optimal head related transfer function spatial configurations designed to maximize speech intelligibility in multi-talker speech displays by spatially separating competing speech channels combined with a method of normalizing the relative levels of the different tal... | 06/24/2008 |
| 7386120 | Echo canceller having a frequency domain active region location estimator Method and apparatus for canceling an echo path by locating an active region thereof for subsequent application of a filter thereto. A plurality of far-end signals RIN(n) and a corresponding plurality of near-end signals SIN(n) are acquired. Co... | 06/10/2008 |
| 7366118 | Echo cancellation The present invention relates to a cancellation of echoes in telecommunications systems, more specifically it relates to adaptive alignment of a linear filter (500) used for echo cancellation. According to the invention, it is continuously determined, by mean... | 04/29/2008 |
| 7365577 | Noise waveform generator with spectrum control A waveform generator for generating a desired waveform is provided, including a noise kernel configured to store a plurality of samples from a predetermined waveform, the plurality of samples being assigned to a plurality of memory blocks; and an address arrangement... | 04/29/2008 |
