摘要:
The present invention discloses a noise canceling system and method, a smart control method and device and a communication equipment. Said smart control method includes: when it is detected there is no voice signal output at a receiving end of a communication equipment, receiving an outside noise signal from a reference microphone away from ears and a detection signal from a monitoring microphone near ears; implementing performance analysis on said received outside noise signal and said detection signal to estimate a noise reduction performance curve after said feed-forward active noise cancellation; and regulating parameters of the control circuit in said feed-forward active noise cancellation according to said estimated noise reduction performance curve and the preset noise reduction performance curve to make a difference between said estimated noise reduction performance curve and said preset noise reduction performance curve within a preset range.
摘要:
The present invention discloses a method and a device for suppressing residual echoes. The method comprises: performing adaptive filtering on M transmitter signals respectively to obtain M adaptive filtered signals; performing array-filtering on the M−1 adaptive filtered signals other than the first adaptive filtered signal to obtain M−1 array-filter output signals; subtracting each of the M−1 array-filter output signals from the first adaptive filtered signal respectively to obtain M−1 difference signals, performing time-domain/frequency-domain conversion on the M−1 difference signals respectively and selecting one of the frequency-domain signals that has the least energy; performing time-domain/frequency-domain conversion on the first adaptive filtered signal and the Mth adaptive filtered signal and then performing speech probability filtering on the converted first adaptive filtered signal and the converted Mth adaptive filtered signal to obtain one frequency-domain speech probability signal; and multiplying the frequency-domain speech probability signal with the selected signal that has the least energy, and performing frequency-domain/time-domain conversion on the multiplication result to obtain a signal as a transmitter output signal. The technical solutions of the present invention can suppress the residual echoes effectively without impairing near end speech.
摘要:
Control circuitry is coupled between an error event output and a data input of a pseudorandom binary sequence (PRBS) checker. The control circuitry is configured to switch between a first operating state in which a received PRBS signal is applied to the data input of the PRBS checker and a second operating state in which an error signal is applied to the data input of the PRBS checker, responsive to detection of a designated condition of the PRBS checker. In an illustrative embodiment, the designated condition is an end-of-test condition indicating that the PRBS checker has completed a test involving the received PRBS signal.
摘要:
A method for evaluating failure rate, which is applied to a plurality of semiconductor chips with error checking and correcting function includes the following steps. A first read-write test operation is applied to the semiconductor chips, thereby obtaining a plurality of first failure bit counting values. The error checking and correcting function of each of the semiconductor chips is off. An aging test is applied to the semiconductor chips. A second read-write test operation as the first read-write test operation is applied to the semiconductor chips, thereby obtaining a plurality of second failure bit counting values. The number of the semiconductor chips, the first failure bit counting values, the second failure bit counting values and an error checking and correcting coefficient are calculated to obtain a failure rate of the semiconductor chips.
摘要:
The present invention relates to compounds of formula (I), or a pharmaceutically acceptable salt or solvate thereof, wherein: R1, R2, Z1, t, and ring A are as defined in the specification. The invention also relates to pharmaceutical compositions comprising the compounds of formula (I) and methods of treating a condition that is mediated by the modulation of JNK, such as diabetes, the method comprising administering to a mammal an effective amount of a compound of formula (I).
摘要:
The innovation provided an approach to the great volume of data based dynamic policy model, which consists of the steps as the following: 1) User registration in the Differentiation Access & Application Control System (DACS); 2) After user log in Radius system, the user profile is delivered to DACS system where user profile can be recorded; 3) After logging in DACS system, user has option to subscribe the policy for the bandwidth, and the DACS system record the subscribed policy information; 4) User requests to use the subscribed policy via the interface provided by DACS system; 5) After receiving policy requests from user, the DACS system creates a thread which dispatches the policy ordered by subscriber. After finishing above, the result will be returned to subscriber. The innovation supports dynamic policy dispatch in real-time manner for the large number of subscribers, specified bandwidth and QoS according to the service, thus the change from bandwidth control to the dynamic policy model for the service control is realized.
摘要:
The present disclosure relates to a motion control system for a machine tool system wherein a value of a surface finish quality parameter of the motion control system is adjusted to control the surface finish of a part machined with the machine tool system. The machine tool system may include a conversational mode of operation and a NC mode of operation.
摘要:
Disclosed is a system or method of using hash functions to preserve a relationship. A relationship is anonymously preserved by storing the hash result of a relationship token that comprises a finite set of values of a plurality of objects. Specifically, an account anonymous identifier of an account can be produced by hashing a relationship token that comprises identity information of an owner of said account. A party that has enough knowledge of an account owner can independently produces said account anonymous identifier and therefore, securely communicates with a specific account without prior communication or a password. An account owner can further prove his/her ownership of an account by submitting related documents and a relationship token that comprises his/her identity information to an account system.
摘要:
The invention relates to a novel kind of chitosan derivative, specifically to quaternized carboxymethyl chitosand derivatives and preparation method. Chitosan with different molecular weight reacts with chloroactic acid give rise to carboxymethyl chitosan. After reaction of Schiff based, deoxidized and quaternized, quaternized carboxymethyl chitosan is obtained. This kind of chitosan derivative have better water-solubility and better antifungal activity, which can used in the fields of medicine and agriculture.
摘要:
Control circuitry is coupled between an error event output and a data input of a pseudorandom binary sequence (PRBS) checker. The control circuitry is configured to switch between a first operating state in which a received PRBS signal is applied to the data input of the PRBS checker and a second operating state in which an error signal is applied to the data input of the PRBS checker, responsive to detection of a designated condition of the PRBS checker. In an illustrative embodiment, the designated condition is an end-of-test condition indicating that the PRBS checker has completed a test involving the received PRBS signal.