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71.
公开(公告)号:US10776689B2
公开(公告)日:2020-09-15
申请号:US16418153
申请日:2019-05-21
Applicant: GoPro, Inc.
Inventor: Tom Medioni
Abstract: Convolutional neural network information may define a convolutional neural network including layers. The layers may define operations on an input to the convolutional neural network. The layers in the convolutional neural network information may be formatted as shaders. Input information defining the input to the convolutional neural network may be accessed. The input information may be formatted as an array of textures. The shaders may be applied to the textures to effectuate processing the input to the convolutional neural network through the layers of the convolutional neural network. One or more results may be obtained from applying the shaders to the array of textures.
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公开(公告)号:US10728663B2
公开(公告)日:2020-07-28
申请号:US16364377
申请日:2019-03-26
Applicant: YAMAHA CORPORATION
Inventor: Kenji Ishizuka , Kenichi Tamiya , Kazunobu Kondo , Toshifumi Kunimoto
Abstract: A method for setting a filter frequency response includes: dividing a target frequency band into multiple first partial bands at a frequency corresponding to an intersection between a first line representative of a target spectrum envelope and a second line representative of a first spectrum envelope derived from smoothing a measured frequency spectrum; and setting a frequency response of a filter corresponding to a first partial band specified by an operator from among the multiple first partial bands, in accordance with a setting operation for setting an adjustment amount performed by the operator with respect to the specified first partial band.
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公开(公告)号:US10666307B2
公开(公告)日:2020-05-26
申请号:US16041060
申请日:2018-07-20
Applicant: Massachusetts Institute of Technology
Inventor: Xiao-Yu Wang
Abstract: A nonlinear compensator is provided to include a decomposition circuit and a plurality of filter elements. The decomposition circuit has a nonlinear frequency response characteristic and the decomposition circuit is configured to receive an input signal and decompose the input signal into decomposed signals corresponding to positive and negative frequency signal components of the input signal. Each of the plurality of filter elements is configured to receive at least portions of the decomposed signals and apply filter element characteristics to the decomposed signals with the filter element characteristics that are matched to the nonlinear frequency response of the decomposition circuit.
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公开(公告)号:US20200067557A1
公开(公告)日:2020-02-27
申请号:US16294888
申请日:2019-03-06
Inventor: Wen-Juh KANG , Yu-Chu CHEN , Hua-Shih LIAO
Abstract: A signal transmission device includes a transceiver circuitry and a control circuitry. The transceiver circuitry is configured to receive first device data from an external device through a channel. The control circuitry is configured to calculate a least one system parameter of the transceiver circuitry based on the first device data, second device data associated with the transceiver circuitry, and at least one requirement of a predetermined communication protocol, in order to link with the external device.
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公开(公告)号:US10560126B2
公开(公告)日:2020-02-11
申请号:US16217477
申请日:2018-12-12
Inventor: Rui Ma , Daniel Antonio Da Costa Dinis , Yukimasa Nagai
Abstract: A radio frequency (RF) transmitter includes a set of input ports to receive baseband samples of a signal to be transmitted on a set of disjoint frequency bands, a set of filter banks, there is one filter bank for each input port, each filter bank includes a plurality of digital polyphase interpolation filters to sample a shifted phase of the corresponding sequence of baseband samples and to interpolate the sampled phases to produce a plurality of sequences of interpolated baseband phased samples with the shifted phase, and a set of oscillators banks, each oscillator bank includes a plurality of polyphase Digital Direct Synthesizer (DDS) corresponding to the plurality of digital polyphase interpolation filters to generate a plurality of sequences of samples of digital waveform. The RF transmitter includes a set of mixer banks to mix corresponding sequences of samples of digital waveform and interpolated baseband phased samples to up convert each sequence of interpolated baseband phased samples to the effective frequency, a parallel digital combiner to combine in-phase sequences of interpolated baseband phased samples of different frequency bands to produce a plurality of sequences of multiband upconverted samples, and a pulse encoder to modulate and encode the plurality of sequences of multiband upconverted samples to produce a plurality of encoded multi-band signals. The RF transmitter converts the plurality of encoded multi-band signals into a RF bitstream and radiate the RF bitstream as an analog signal.
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公开(公告)号:US20200028494A1
公开(公告)日:2020-01-23
申请号:US16587337
申请日:2019-09-30
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor: Srinivas Achanta
IPC: H03H17/02
Abstract: A fixed latency configurable tap or fixed-tap digital filter may filter a signal in a fixed amount of time, regardless of the number of taps. The filter may include one or more of a clock, a plurality of registers in a shift register, an adder, an accumulator, and/or a scaler. In at least one embodiment, a running average may be maintained as samples are received such that the latency remains fixed with a constant number of clock cycles.
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公开(公告)号:US20200021936A1
公开(公告)日:2020-01-16
申请号:US16581782
申请日:2019-09-25
Inventor: Hyunoh OH , Taegyu LEE
IPC: H04S5/00 , H04S3/02 , H03H21/00 , H03H17/02 , H04S7/00 , H04R5/04 , H04S3/00 , G10L19/008 , G10L25/48 , G10L19/02
Abstract: The present invention relates to a method and an apparatus for processing a signal, which are used for effectively reproducing a multimedia signal, and more particularly, to a method and an apparatus for processing a signal, which are used for implementing filtering for multimedia signal having a plurality of subbands with a low calculation amount.To this end, provided are a method for processing a multimedia signal including: receiving a multimedia signal having a plurality of subbands; receiving at least one proto-type filter coefficients for filtering each subband signal of the multimedia signal; converting the proto-type filter coefficients into a plurality of subband filter coefficients; truncating each subband filter coefficients based on filter order information obtained by at least partially using characteristic information extracted from the corresponding subband filter coefficients, the length of at least one truncated subband filter coefficients being different from the length of truncated subband filter coefficients of another subband; and filtering the multimedia signal by using the truncated subband filter coefficients corresponding to each subband signal and an apparatus for processing a multimedia signal using the same.
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78.
公开(公告)号:US10536177B2
公开(公告)日:2020-01-14
申请号:US16306497
申请日:2016-06-15
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor: Kazimierz Koziarz , Erik Larsson , Henrik Egnell
Abstract: A radio communication receiver and a method performed by the radio communication receiver for configuring a Notch filter of the radio communication receiver. The method comprises retrieving stored and previously determined filter coefficients from a set of filter coefficients, where the retrieved filter coefficients constitute a fraction of the total number of filter coefficients; and setting the rest of the filter coefficients to one. The method further comprises normalising the retrieved filter coefficients; and transforming the filter coefficients such that the Notch position ends up at the one or more frequencies to be filtered out.
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公开(公告)号:US10536136B2
公开(公告)日:2020-01-14
申请号:US15301383
申请日:2015-04-01
Applicant: Lachlan Paul Barratt
Inventor: Lachlan Paul Barratt
Abstract: The present invention relates broadly to a method of digitally filtering a signal, such as an audio signal, using a digital filter. The digital filter includes a plurality of neighbouring sample points broken into zones having different frequency content or frequency ranges. The zones adjacent one another may have neighbouring sample points in common. Generally each zone has at least same distinct frequencies compared with other zones. That is, the zones are roughly dependent on the frequency content. The invention in its preferred form involves combining values for two or more of the neighbouring sample points for select of the zones depending on its frequency content. The values are combined so as to provide a modified zone having substantially the same number of sample points as the select zone. The modified zones together provide a modified filter to be applied to the signal.
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80.
公开(公告)号:US20190362729A1
公开(公告)日:2019-11-28
申请号:US16534685
申请日:2019-08-07
Applicant: DOLBY INTERNATIONAL AB
Inventor: Kristofer KJOERLING , Lars VILLEMOES
IPC: G10L19/02 , H03H17/02 , G10L25/18 , G10L25/21 , G10L19/083 , G10L19/025 , G10L25/48 , G10L25/12 , G10L19/26 , G10L19/12 , G10L19/00
Abstract: The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.