fft
How to resample/rebin a spectrum?
In Matlab, I frequently compute power spectra using Welch\'s method (pwelch), which I then display on a log-log plot.The frequencies estimated by pwelch are equally spaced, yet logarithmically spaced[详细]
2023-03-19 14:31 分类:问答Programming a Spectrogram using C [closed]
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form. For help clari[详细]
2023-03-19 13:58 分类:问答FFT for WAV file and output to draw spectrum
I have some questions about FFT. I want to use FFT to analyse frequency 开发者_如何学运维of WAV file, 16 bit dual chanel, 44100Hz. I want to analyse every 50ms, so that I have 2205 sample at the given[详细]
2023-03-19 13:32 分类:问答Compensating for microphone frequency response in FFT
I\'m making an application that displays an FFT of sound data from a microphone. One thing I need to be able to support is calibrating to the frequency response of the microphone, which will be given[详细]
2023-03-19 10:44 分类:问答Audio spectrum analysis using FFT algorithm in Java
I want to analyze the spectrum of an audio file in Java (ME).I want to draw spectrum as some media players do.But I don\'t understand some points:[详细]
2023-03-18 02:49 分类:问答Problem with double precision and smartpointer in ITK
The problem I have is that I open an Image from a GUI using Qt (through the class I createdImageFrame, this class has defined the PixelType as follows:[详细]
2023-03-17 21:53 分类:问答How to convert wave data into Complex numbers
I\'m reading raw data from a mic and feeding into FFT. Two of the FFT libraries I\'m trying (AForge and Exocortex.DSP) takes Complex numbers as input and gives Complex numbers as output.[详细]
2023-03-17 14:21 分类:问答How to use CUFFT from Fortran 90?
How to use CUFFT library (from nVidia\'s CUDA SDK 4.0.13), which as far as I know has only C bindings, in program written in Fortran 90 (to be compiled using gfortran fr开发者_JS百科om GNU Compiler Co[详细]
2023-03-15 13:58 分类:问答How can I convert a very large integer from one base/radix to another using FFT?
Are there known algorithms which will take a big integer with n digits encoded in one base/radix and convert it to another arbitrary base? (Let\'s say from base 7 to base 19.) n can be really big, lik[详细]
2023-03-15 12:25 分类:问答Splitting music file into chunks
How would you go about splitting a music file (preferably mp3) into chunks? I am usi开发者_运维百科ng the SDL_mixer API. There may be some useful functions in there but I couldn\'t find any.[详细]
2023-03-15 07:18 分类:问答