Abstract: A beam generator, a beam generating method, and a chip are provided. The beam generator comprises a first channel, a second channel, and a signal merging module; the first channel comprises a first-channel filter, the first-channel filter is used to filter an input signal to obtain a first filtered signal; the first filtered signal comprises a desired signal; the second channel comprises: a second-channel blocking module, used to block the desired signal in the input signal to obtain a blocked signal; a compensation filter, connected to the second-channel blocking module for compensating for the blocked signal to obtain a second filtered signal; and an adaptive filter connected to the compensation filter for adaptively filtering the second filtered signal to obtain a third filtered signal; the signal merging module is for merging the first filtered signal and the third filtered signal to obtain an output signal.

Abstract: This application relates to a method for training a speech recognition model, the method comprises: providing a speech training data set comprising a plurality of speech data items and speech tags each corresponding to a speech data item; providing a speech recognition model to be trained, the speech recognition model to be trained comprising a convolution neural network, a first fully connected network, a recurrent neural network and a second fully connected network which are cascade coupled together, wherein each of the networks comprises one or more network layers each having a parameter matrix; and wherein the speech recognition model is configured to process speech data items to generate corresponding speech recognition results; and using the speech training data set to train the speech recognition model such that the parameter matrices of at least two adjacent network layers of the trained speech recognition model satisfies a predetermined constraint condition; and the speech recognition model trained u

Abstract: A beam generator, a beam generating method, and a chip are provided. The beam generator comprises a first channel, a second channel, and a signal merging module; the first channel comprises a first-channel filter, the first-channel filter is used to filter an input signal to obtain a first filtered signal; the first filtered signal comprises a desired signal; the second channel comprises: a second-channel blocking module, used to block the desired signal in the input signal to obtain a blocked signal; a compensation filter, connected to the second-channel blocking module for compensating for the blocked signal to obtain a second filtered signal; and an adaptive filter connected to the compensation filter for adaptively filtering the second filtered signal to obtain a third filtered signal; the signal merging module is for merging the first filtered signal and the third filtered signal to obtain an output signal.

Abstract: The present application disclosed a decision feedback equalization processing device and method. The device comprises: a channel estimator for receiving an input signal, and determining, based on the input signal, an input signal autocorrelation matrix Ryy, an input-output signal cross-correlation matrix Ryx and an input-output signal cross-correlation vector ryx; a tap coefficient calculator for receiving Ryy, Ryx and ryx, and calculating a feed-forward equalizer (FFE) tap coefficient vector g and a feedback equalizer (FBE) tap coefficient vector f, wherein at least one of the FFE tap coefficient vector g and the FBE tap coefficient vector f is calculated using a conjugate gradient descent algorithm. The tap coefficient calculator comprises: a circulant matrix construction unit and a fast Fourier transformation (FFT) calculating unit.

Abstract: The present application disclosed a decision feedback equalization processing device and method. The device comprises: a channel estimator for receiving an input signal, and determining, based on the input signal, an input signal autocorrelation matrix Ryy, an input-output signal cross-correlation matrix Ryx and an input-output signal cross-correlation vector ryx; a tap coefficient calculator for receiving Ryy, Ryx and ryx, and calculating a feed-forward equalizer (FFE) tap coefficient vector g and a feedback equalizer (FBE) tap coefficient vector f, wherein at least one of the FFE tap coefficient vector g and the FBE tap coefficient vector f is calculated using a conjugate gradient descent algorithm. The tap coefficient calculator comprises: a circulant matrix construction unit and a fast Fourier transformation (FFT) calculating unit.

Abstract: An integrated pressure and temperature reducing device, comprising a secondary steam pipe and a temperature and pressure reducing mechanism arranged within the secondary steam pipe; the temperature and pressure reducing mechanism comprises an upper valve cover and a spool; the spool is provided with a plurality of pressure reducing holes, and a valve stem is inserted at one end of the spool; an end of the valve stem which is close to the spool is provided with a water supply passage, an outer peripheral surface of the valve stem is provided with a plurality of water inlet holes which are in communication with the water supply passage; the other end of the spool is inserted with a temperature reducing water pipe, and an end of the temperature reducing water pipe which is close to the valve stem is provided with a water outlet passage.

Abstract: An adjustable clamp used for a marine deck welding test includes a supporting device, a guiding and positioning device and a clamping device; the guiding and positioning device comprises a plurality of guiding shafts, a plurality of guiding plates and a plurality of positioning rods, the guiding shafts located at the two sides of a working platform are detachably connected with supporting blocks, the guiding shafts penetrate through the guiding plates, the guiding plates can slide horizontally along the guiding shafts, at least one column of through-holes are formed in each guiding plate in the direction perpendicular to the sliding direction, the through-holes located at the central part are guiding plate bolt holes, the through-holes located at the two sides are guiding plate positioning holes, the positioning rods are placed in the guiding plate positioning holes, and the upper ends of the positioning rods are higher than the guiding plates; the clamping device comprises a plurality of pressing plates loca

Abstract: A circuit for predistortion, comprising a digital predistorter configured to generate a modified digital signal by modifying an input baseband signal with a predistortion coefficient; a DAC configured to generate an analog signal by converting the modified digital signal; a PA configured to generate an amplified signal by amplifying the analog signal; an attenuator configured to generate an attenuated signal by attenuating the amplified signal; an ADC configured to generate a attenuated digital signal; a timing synchronizer configured to generate a synchronized amplified signal by synchronizing the attenuated digital signal with the modified digital signal; a statistics generator configured to generate a probability density function of a plurality of samples of the input baseband signal; an orthogonal basis function generator configured to generate a set of normalized orthogonal basis functions; a predistortion coefficient training circuit configured to generate an updated predistortion coefficient.

Abstract: A testing probe including a base, an elastic extensible element and a probe needle. The probe needle is disposed on the base through the elastic extensible element, and the elastic extensible element is in a stretched state. The testing probe requires only coating silver adhesive on the testing area of the liquid crystal screen previously, eliminating the need to make solder wire, fix solder wire, etc., thereby simplifying preparation before testing and ensuring reliable connections, which greatly reduces testing time and improves testing efficiency. A testing device including the above testing probe.

Abstract: A circuit for predistortion, comprising a digital predistorter configured to generate a modified digital signal by modifying an input baseband signal with a predistortion coefficient; a DAC configured to generate an analog signal by converting the modified digital signal; a PA configured to generate an amplified signal by amplifying the analog signal; an attenuator configured to generate an attenuated signal by attenuating the amplified signal; an ADC configured to generate a attenuated digital signal; a timing synchronizer configured to generate a synchronized amplified signal by synchronizing the attenuated digital signal with the modified digital signal; a statistics generator configured to generate a probability density function of a plurality of samples of the input baseband signal; an orthogonal basis function generator configured to generate a set of normalized orthogonal basis functions; a predistortion coefficient training circuit configured to generate an updated predistortion coefficient.

Abstract: An adjustable clamp used for a marine deck welding test includes a supporting device, a guiding and positioning device and a clamping device; the guiding and positioning device comprises a plurality of guiding shafts, a plurality of guiding plates and a plurality of positioning rods, the guiding shafts located at the two sides of a working platform are detachably connected with supporting blocks, the guiding shafts penetrate through the guiding plates, the guiding plates can slide horizontally along the guiding shafts, at least one column of through-holes are formed in each guiding plate in the direction perpendicular to the sliding direction, the through-holes located at the central part are guiding plate bolt holes, the through-holes located at the two sides are guiding plate positioning holes, the positioning rods are placed in the guiding plate positioning holes, and the upper ends of the positioning rods are higher than the guiding plates; the clamping device comprises a plurality of pressing plates loca

Abstract: The invention provides a testing probe, which includes a base, an elastic extensible element and a probe needle, the probe needle being disposed on the base through the elastic extensible element, and the elastic extensible element being in a stretched state. By the testing probe provided by the invention, only coating silver adhesive on the testing area of the liquid crystal screen previously is needed, and the steps of making solder wire, fixing solder wire, etc. are not needed any more. Therefore not only the preparation before testing can be simplified largely, but also reliability of connection is ensured, so as to reduce testing time largely and improve testing efficiency. The invention further provides a testing device including the above testing probe.