Sign in

username:

password:



Not a member?

Search compdsp



Search tips

comp.dsp by Keywords

Adaptive Filter | ADPCM | ADSP | ADSP-2181 | Aliasing | AMR | Anti-Aliasing | ARMA | Autocorrelation | AutoCovariance | Beamforming | Bessel | Blackfin | Butterworth | C6713 | CCS | Chebyshev | CIC Filter | Circular Convolution | Code Composer Studio | Comb Filter | Compression | Convolution | Cross Correlation | DCT | Decimation | Deconvolution | Demodulation | DM642 | DSP Boards | DSP/BIOS | DTMF | Echo Cancellation | Equalization | Equalizer | ETSI | EZLITE (Ez-kit Lite) | FFT | FFTW | FIR Filter | Fixed Point | FSK | G.711 | G.723 | G.729 | Gaussian Noise | Goertzel | GPIO | Hilbert Transform | IFFT | IIR Filter | Interpolation | Invariance | JTAG | Kalman | Laplace Transform | Levinson | LPC | McBSP | MIPS | Modulation | MPEG | Multirate | Notch Filter | Nyquist | OFDM | Oversampling | Pink Noise | Pitch | PLL | Polyphase | QAM | QDMA | Quantization | Quantizer | Radar | Random Noise | Reed Solomon | Remez | Resampling | RTDX | Sampling | Sharc | TI C6711 | Undersampling | Viterbi | Wavelets | White Noise | Wiener Filter | Windowing | XDS510PP | Z Transform

Sponsor

Industry's highest performing at the lowest power DSPs now as low as $5.00*
Start development today!
*volume pricing for 10ku

Discussion Groups

Free Online Books

See Also

Embedded SystemsFPGAElectronics

Discussion Groups | Comp.DSP | convolution

There are 5 messages in this thread.

You are currently looking at messages 0 to 5.


convolution - monu1794 - 2008-07-15 11:26:00

Hi all,

I need to convolve a sine wave with random signal. I made use of the conv
function in matlab. I am expecting a dual-dirac histogram for the resulting
convolution. But I keep getting the gaussian histogram of the random signal
as the result of the convolution. Can anyone suggest a proper code for
performing the convolution between them?

Thanks,
Nitin


______________________________
New DSP Code Snippets Section now Live.   Learn more about the reward program for contributors here.

Re: convolution - Andor - 2008-07-15 11:55:00



Nitin wrote:
> Hi all,
>
> I need to convolve a sine wave with random signal. I made use of the conv
> function in matlab. I am expecting a dual-dirac histogram for the resulting
> convolution. But I keep getting the gaussian histogram of the random signal
> as the result of the convolution.

Perhaps you should reconsider your expectations?

Regards,
Andor
______________________________
New DSP Code Snippets Section now Live.   Learn more about the reward program for contributors here.

Re: convolution - Rune Allnor - 2008-07-15 12:15:00

On 15 Jul, 17:26, "monu1794" <monu1...@gmail.com> wrote:
> Hi all,
>
> I need to convolve a sine wave with random signal. I made use of the conv
> function in matlab. I am expecting a dual-dirac histogram for the resulting
> convolution. But I keep getting the gaussian histogram of the random signal
> as the result of the convolution. Can anyone suggest a proper code for
> performing the convolution between them?

You asked the same question at comp.soft-sys.matlab yesterday.
Asking the same question again to different people will not
change the fact that you need to learn the properties of the maths
tools you try to apply.

Again: Find out the difference between a Dirac delta and a Kronecker
delta, and you are half-way to finding out why you will never get the
results you expect.

Rune
______________________________
New DSP Code Snippets Section now Live.   Learn more about the reward program for contributors here.

Re: convolution - William S. - 2008-07-15 20:12:00

monu1794 wrote:
> Hi all,
> 
> I need to convolve a sine wave with random signal. I made use of the conv
> function in matlab. I am expecting a dual-dirac histogram for the resulting
> convolution. But I keep getting the gaussian histogram of the random signal
> as the result of the convolution. Can anyone suggest a proper code for
> performing the convolution between them?
> 
> Thanks,
> Nitin
> 
> 

Hey Nitin,

I don't have access to a copy of matlab at the moment, but if you show
me your code, I might be able to find a bug in it. No promises though ;-)

-WS
______________________________
New DSP Code Snippets Section now Live.   Learn more about the reward program for contributors here.

Re: convolution - rajesh - 2008-07-15 23:45:00

On Jul 15, 8:26 pm, "monu1794" <monu1...@gmail.com> wrote:
> Hi all,
>
> I need to convolve a sine wave with random signal. I made use of the conv
> function in matlab. I am expecting a dual-dirac histogram for the resulting
> convolution. But I keep getting the gaussian histogram of the random signal
> as the result of the convolution. Can anyone suggest a proper code for
> performing the convolution between them?
>
> Thanks,
> Nitin

what kind of random signal you are using.
With these random signals one should always take ensemble averages.
______________________________
New DSP Code Snippets Section now Live.   Learn more about the reward program for contributors here.