not increase the computer's workload too much. The sampling theorem proves that the minimum sampling frequency fs without frequency mixing should be twice the highest frequency FM in the signal, that is, FS ≥2fm. Considering the requirements of the binary representation of the computer, generally, FS = (2.56 ~ 4) FM.
Anti-mixed Filtering:It should be noted that the sampling theorem only ensures that the signal is not distorted into a low-frequency signal, but cannot be guaranteed not to be dis
Original article address: PCB decoupling capacitor reasonable configuration Author: ker11f
I. Category of decoupling capacitors in PCB
The decoupling capacitor can be used for energy storage when the operating voltage of the integrated chip or circuit board is compensated. It can be divided into three types: integral, partial, and inter-board.
The overall decoupling capacitor is also called a bypass capacitor. It operates in a low frequency (
Local decoupling capacitors have two functions. First
Detailed description of AAC decoding algorithm principles
This document describes in detail ISO/IEC 13818-7 (MPEG2 AAC audio codec), ISO/IEC 14496-3 (MPEG4 audio codec AAC low complexity) the AAC audio decoding algorithm. 1. Program System StructureThe following is the AAC decoding flowchart:AAC decoding FlowchartAfter the master module starts running, the master module puts a part of the AAC bit stream into the input buffer, and obtains the starting point of a frame by searching for th
Downsample:2048hz is oversampling for the signal. In fact, as long as the signal is not overlapped (satisfying the nequest sampling theorem), The oversampling signal can be extracted, which is called "downsampling ". Sampling in the field is often limited by specific conditions, or there is no sampling rate of Hz, or debugging is very difficult. If R> 1, RFS/2 is much larger than the highest frequency FM of the audio signal, which makes the quantization nois
Author: Jiujin. HongReprinted please explain the source: http://blog.csdn.net/hongjiujing or www.linuxforum.net embedded Linux ForumTslib Background:
In mobile terminals using touch screens, the performance debugging of touch screens is one of the important issues. Due to electromagnetic noise, touch screens are prone to inaccurate clicks and jitters.Tslib is an open-source program that provides functions such as filtering, deshake, and calibration fo
different paths due to network congestion, hardware failure, and re-transmission due to connection issues, the data packets are not received in order. A higher order error may cause a decline in the call quality.
EchoThe Grand Canyon is wonderful. When you stand on the edge or below the Grand Canyon, it is best to hear the echo of the Grand Canyon. However, in a speech system, ECHO is unacceptable. Return the lost data packet or signal to the sender. This will cause more data packet loss in you
heat due to the PDU's long-term work.
Lightning Eliminator SPD), always protect Electrical Equipment
Surge is an instantaneous over-voltage or over-current phenomenon that exists in the circuit at any time. It usually only occurs within several microseconds. However, due to high energy, it often causes a hard injury to the precision circuit. People are equipped with lightning arresters in the building, but they cannot solve the internal electrical i
of the whole gun is short, but because of the no-support structure, the barrel length is 230. The flame eliminator has the anti-hop function. In addition to the diagonal cutting at the front end, there are four holes divided into two rows above the left and right. (P90 has no oblique cutting at the initial stage of production, and there are six open holes divided into two rows)In addition, the structure of the gun is quite compact. Both the gun machi
RC series circuit, the resistance is generally selected from a few k to dozens of K, electricityJongxian 0.01uF) To reduce the impact of EDM.(3) Add a filter circuit to the motor, pay attention to capacitance, inductance lead should be as short as possible.(4) Each IC on the circuit board should be connected with a 0.01μf~0.1μf high-frequency capacitor to reduce the IC's influence on the power supply. AttentionHigh-frequency capacitance wiring, should be close to the power supply side and as sh
within 24 s, using the clock to locate one of the 20 PRN segments. Even if a PRN block cannot be located, if only data is collected within 20 ms within one data bit, only one time of possible data changes can be ensured.
The data bit change time measurement determines a PRN piece, that is, 1 ms. More precise timing needs to measure the phase relationship of the PRN code. This measurement is the most frequent processing during GPS reception.
Considering that there may be a data bit change in t
[Switch] main filter algorithm analysis of tslib
Tslib Parsing
Author: Jiujin. HongReprint please explain the source: http://blog.csdn.net/hongjiujing orWww.linuxforum.netEmbedded Linux SectionTslib Background:
In mobile terminals using touch screens, the performance debugging of touch screens is one of the important issues. Due to electromagnetic noise, touch screens are prone to inaccurate clicks and jitters.Tslib is an open-source program that prov
Tags: machine learning, data mining, overfitting, deterministic noiseCourse introductionThis section describes the problem of over-generalization in machine learning. The author points out that one of the ways to differentiate a professional-level player from a hobbyist is how they deal with the problem of preparation. Through this course, we can know that the merging of sample data is not as high as possible, because the existence of noise will lead
PS Repair image restore perfect photo
Today to share the "three-step noise reduction Method", you can try to retain the details of the case, the photos are more precise noise reduction.
The noise in the photo is divided into two categories: the color noise and the brightness of the
How can we improve anti-interference capability and electromagnetic compatibility when developing electronic products with processors? 1. The following systems should pay special attention to anti-electromagnetic interference:1. A system with extremely high clock frequency and extremely fast bus cycle.2. The system contains high-power and high-current drive circuits, such as relays that generate sparks and large-current switches.3. Systems with weak analog signal circuits and high-precision A/D
original reproduced in: http://blog.csdn.net/bellshape/article/details/65447099, thank you very much.
1. Overview
GSC (Generalized sidelobe canceller, generalized sidelobe Phase Eliminator ) is a method for speech enhancement in microphone array processing. This paper focuses on the tf-gsc of arbitrary (arbitrary) ATF (acoustical Transfer function, acoustic transfer function ) model based on frequency domain (Transfer function generalized Sidelobe
opposite side of the light angle.
Demonstrate the effect of this attribute:
Bevelbitmapeffect attribute relief
The fluctuating height of the concave and convex effects. The valid range is between 0 and 1, and 1 indicates the largest fluctuation (the lowest shadow ). The default value is 0.3.
Demonstrate the effect of this attribute
Bevelbitmapeffect attribute Smoothness
Specifies the smoothness of the shadow. The valid range is between 0 and 1, and 1 indicates the smoothest. The default val
Estimator
We hope that we can use the measurement results to estimate the motion of a moving object to the maximum extent. Therefore, the accumulation of multiple measurements allows us to detect some observed tracks that are not affected by noise. A key additional element is the motion model of the moving object. With this model, we can know not only the location of the moving object, but also the parameters that we observe to support the model.This
) actually means that f (t, x) is a linear shift without changing, that is, when the difference of the variable does not change, then the function value does not change. in fact, it means that the output of a linear moving system can be obtained through the convolution of functions that represent the linear features of the system.
2. Image Filtering
(1) image filtering: it is an indispensable operation in image preprocessing to suppress the noise o
multiply them directly,
You can also add their logarithm, and the final result is the same, all of which are Z.
(2) arbitrary depth: Computing in any depth is the most important feature of fully homomorphic encryption. Previously, some homomorphic encryption schemes were available, which either meet the requirements of addition homomorphic, such as paillier and benaloh algorithms,
There are also some homomorphic schemes that can satisfy the limited addition and multiplication at the same time,
of the ADCs.
An external reference directly driving the ADCs ' Reference-ladder taps. This option delivers maximum gain accuracy by directly controlling the reference voltage applied to each ADC ladder. However, it requires driving the relatively low resistance of the ladders. Moreover, some ADCs do not allow access to this internal bias point.
ADC AccuracyIn many applications, gain and noise level has a major effect on ADC accuracy. The gai
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