signal-processing

相关标签：javascript jquery android 多少钱 iPhone

converting matlab FFT to CUDA FFT

I am currently using the following matlab function: function out = fft_2d(in) out = fftshift(fft2(ifftshift(in)));[详细]

2023-02-26 21:10 分类：问答
How can i detect sound frequency on Java

I need to read the audio streaming and determine 开发者_开发问答generated ultrasounds How can I find a certain sequence of sounds from streaming audio?[详细]

2023-02-26 06:09 分类：问答
How to exploit periodicity to reduce noise of a signal?

100 periods have been collected from a 3 dimensional periodic signal. The wavelength slightly varies. The noise of the wavelength follows Gaussian distribution with zero mean. A good estimate of the w[详细]

2023-02-26 04:19 分类：问答
Finding Relevant Peaks in Messy FFTs

I have FFT outputs that look like this: At 523 Hz is the maximum value. However, being a messy FFT, there are lots of little peaks that are right near the large peaks. However, they\'re irrelevant,[详细]

2023-02-25 04:13 分类：问答
Computing FFT and IFFT with FFTW library C++

I am trying to compute the FFT and then the IFFT just to try out if I can get the same signal back but I am not really sure how to accomplish it.This is how I do the FFT:[详细]

2023-02-25 01:22 分类：问答
Use Digital Signal Processors to accelerate calculations in the same fashion than GPUs

I read that several DSP cards that process audio, can calculate very fast Fourier Transforms and some other functions involved in Sound processing and others. There are some scientific problems (not m[详细]

2023-02-24 04:58 分类：问答
High-pass filtering in MATLAB

Does anyone know how to use filters in MATLAB? I am not an aficionado, so I\'m not concerned with roll-off characteristics etc — I have a 1 dimensional signal vector x sampled at 100 kHz, and I want[详细]

2023-02-23 14:42 分类：问答
How do I compare two voice samples on iOS?

First of all I\'d like to state that my question is not per say about the \"classic\" definition of voice recognition.[详细]

2023-02-22 11:27 分类：问答
Approximating the square root of sum of two squares on a microcontroller

I\'m working on implementing an FFT algorithm in assem开发者_如何学Cbly on an 8-bit microcontroller (HCS08) for fun. Once the algorithm is completed, I\'ll have an array of 8-bit real/imaginary pairs,[详细]

2023-02-22 05:06 分类：问答
Filtering methods of the complex oscilliations

If I have a system of a springs, not one, but for example 3 degree of freedom system of the springs connected in some with each other. I can make a system of differential equations for but it is impos[详细]

2023-02-20 03:07 分类：问答