noise

I've tried several techniques to capture a screenshot of an app from within that app. None of the techniques appear to capture the status bar -- it ends up being black. There apparently was once a way to do this, but that interface is internal and Apple will not let you use it. Any ideas? Note: This is an attempt to solve this problem , where I need to determine if airplane mode is on or off (and no, simply knowing if the network is reachable is not sufficient). However, it would seem that this question is of more general interest, and is distinct from that question. Your actual issue,

I'm using the Matlab function Y = WGN(M,N,P) to generate white noise with Gaussian distribution. This function uses a power value (dB Watts) to calculate the amplitude of the output signal. Since I want to get an output amplitude range of -1 V to 1 V there is a function mode 'linear'. I'm trying to use the 'linear' mode to produce the output but the result is an output amplitude range of [-4 4] RandomSignal = wgn(10000,1,1,1,'linear'); Time = linspace(0,10,10000); figure() plot(Time,RandomSignal) figure() hist(RandomSignal,100) Is there another function to produce this result, or am I just

I am writing a C program for editing a Wav audio file. I have loaded all file datas in an array of unsigned integer values (UINT16_T). Now, i would like to reduce the volume of the file. I thought it was enough to decrease the value (of a certain percentage) of the single values. But if i do that, i obtain an audio file with noise (I think I understand is called "static" or "click noise") Why? Which is the right procedure? Thank You! This is the piece of code affected: FILE* fp; FILE* fp2; /*Size of my file*/ #define BUFFER_SIZE 28242852 /*Array with file data*/ unsigned char *buffer; /*Array

I'm in the process of creating a custom view for my android application and would like to add a noise overlay over my drawings. My drawings are pretty standard, arcs, bezier curves, etc. What would be the way to go with creating a noise overlay over arbitrary shapes, drawn with canvas? Use a tileable transparent noise png and cover the canvas with it. 来源： https://stackoverflow.com/questions/6994289/add-noise-effect-to-a-drawing

I've been trying to create a generalized Gradient Noise generator (which doesn't use the hash method to get gradients). The code is below: class GradientNoise { std::uint64_t m_seed; std::uniform_int_distribution<std::uint8_t> distribution; const std::array<glm::vec2, 4> vector_choice = {glm::vec2(1.0, 1.0), glm::vec2(-1.0, 1.0), glm::vec2(1.0, -1.0), glm::vec2(-1.0, -1.0)}; public: GradientNoise(uint64_t seed) { m_seed = seed; distribution = std::uniform_int_distribution<std::uint8_t>(0, 3); } // 0 -> 1 // just passes the value through, origionally was perlin noise activation double