signal-processing

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How can I determine if my convolution is separable?

What makes a convolution kernel separable? Ho开发者_StackOverfloww would I be able to tell what those separable parts were in order to do two 1D convolutions instead of a 2D convolution>[详细]

2023-03-03 10:53 分类：问答
How to determine the magnitude of a frequency and the phase angle from an audio sample?

I\'m currently working on this project that implies some DSP skills. I must extract the audio from a movie and then, by analyzing it, I must determine when someone speaks or not, more like an voice ac[详细]

2023-03-03 02:50 分类：问答
DBPSK Demodulation in Simulink using Xilinx blockset

I am trying to build a DBPSK demodulator using Simulink and Xilinx blockset. I calculate the Phase Difference of the Successive samples like this :[详细]

2023-03-02 19:08 分类：问答
What is 6-tap filter and how they differ across codecs?

I found in one research on VP8 decoding phrase \"6-tap filter in开发者_开发百科 any case will be a 6-tap filter, and the difference is usually only in the coefficients\". So what is 6-tap filter, how[详细]

2023-03-02 16:05 分类：问答
NAudio pitch shifting

I am using 开发者_JAVA技巧the NAudio DLL and I am looking for example code for pitch shifting sound.There is an example of using NAudio for pitch shifting in the open source Skype Voice Changer projec[详细]

2023-03-02 12:48 分类：问答
HOW to get MFCC from an FFT on a signal?

SHORT AND SIMPLE: What are the steps that are involved to get an MFCC from an FFT. DETAILED: I\'m working on a drum application to classify sounds. Its a matching application for the iPhone with the o[详细]

2023-03-02 04:55 分类：问答
computing fft and ifft with fftw.h in C

Hi all I am using the fftw C libraries to compute the frequency spectrum for some signal processing applications on embedded systems. However, in my project I have run into a slight hinderence.[详细]

2023-03-01 12:32 分类：问答
DCT compression

How does the DCT (Discrete Cosine Transform) help to compress sound (or any wave-like data)? According to the DCT transform there are N input values and N output values as a result. Where is the compr[详细]

2023-02-28 17:47 分类：问答
Increasing the pitch of audio using a varied value

Okay, this a bit of maths and DSP question. Let us say I have 20,000 samples which I want to resample at a different pitch. Twice the normal rate for example. Using an Interpolate cubic method found[详细]

2023-02-28 04:09 分类：问答
Recover the original analog signal (time varying Voltage) from digitized version?

I have been looking into how to convert my digital data into analog. So, I have a two column ASCII data file (x: time, y=voltage amplitude) which I would like to convert into an analog signal (varyi[详细]

2023-02-27 01:44 分类：问答