Question for practicising engineers

Started by Anonymous in comp.dsp5 months ago 4 replies

who design electronic products. I expect you are well aware of the price you can buy ready-made modules to do all manner of things from China or...

who design electronic products. I expect you are well aware of the price you can buy ready-made modules to do all manner of things from China or other far east countries. How is it possible to survive nowadays with such competition. I realise not all of the stuff is quality of course but some are more than satisfactory. I recently saw a composite video to HDMI convertor and know a f


Reminder: CFP 8th EVOMUSART conference

Started by Luz Castro in comp.dsp5 months ago

------------------------------------------------ Call for papers for the 8th EVOMUSART conference Please distribute (Apologies for cross...

------------------------------------------------ Call for papers for the 8th EVOMUSART conference Please distribute (Apologies for cross posting) ------------------------------------------------ The 8th International Conference on Computational Intelligence in Music, Sound, Art and Design (evoMUSART) will be held in Leipzig, Germany in 24-26 April 2019, as part of the evo* event. Th


Multiple Sample Rates

Started by Anonymous in comp.dsp5 months ago 4 replies

I have a Kalman filter which estimates pitch and roll for a stabilised platform. It is a steady-state kalman filter so no great computational...

I have a Kalman filter which estimates pitch and roll for a stabilised platform. It is a steady-state kalman filter so no great computational overload - I calculate the gain matrix first and then go into the while loop forever. In the loop there is also controllers Lag lead PI type. To get a high bandwidth I sample at 10kHz overall but I am finding that the Kalman filter doesn't nee


Software Radio

Started by Anonymous in comp.dsp6 months ago 3 replies

https://www.gearbest.com/cables-connectors/pp_009457309206.html?wid=1433363 can't believe they are off the shelf now and so small.

https://www.gearbest.com/cables-connectors/pp_009457309206.html?wid=1433363 can't believe they are off the shelf now and so small.


DSP programming in Atari days

Started by Anonymous in comp.dsp6 months ago 24 replies

Hello! I'm new to DSP and programming, so I wonder how you guys did DSP programming in Atari days back in 80's. How did you figure out to do...

Hello! I'm new to DSP and programming, so I wonder how you guys did DSP programming in Atari days back in 80's. How did you figure out to do it? I guess education flow is something like that: 1) Learn Assembly language; 2) Get and learn Atari or IBM PC technical reference manuals; 3) Read some DSP books; 4) Start programming simple batch programs; Am I right? Can you please sug...


Accessing very old comp.dsp posts

Started by Richard (Rick) Lyons in comp.dsp7 months ago 6 replies

Hi. Is there a way I can access posts made on comp.dsp during March of 2008? Thanks. [-Rick-]

Hi. Is there a way I can access posts made on comp.dsp during March of 2008? Thanks. [-Rick-]


How to build a virtual acoustic studio hosted in a website?

Started by Piotr Mancini in comp.dsp7 months ago 1 reply

This is a long term question. We are in the process of building an Internet website that will allow the users to experiment, learn and ask...

This is a long term question. We are in the process of building an Internet website that will allow the users to experiment, learn and ask questions about distances, angles, trajectories, ballistics and sounds related to a very specific event. This is the website where we plan to host the simulations, data, etc. Free Open Source 3D Model of Dealey Plaza http://dealey-plaza.org/ That...


What is the phase margin for a PLL of critically damped?

Started by fl in comp.dsp7 months ago 4 replies

Hello, all: I read an online PLL tutorial, which says "the design of critically damped loops, a PM of about 70 degrees, does not lead to the...

Hello, all: I read an online PLL tutorial, which says "the design of critically damped loops, a PM of about 70 degrees, does not lead to the fastest settling time for third order CP PLLs." It is known that a critically damped second order loop has zeta=1, i.e. two real roots of the same value. But I can't get its phase margin 70 degrees. What do you think about phase margin remark? ...


All-digital symbol timing recovery scheme constraints?

Started by Mehtap özkan in comp.dsp7 months ago 1 reply

Dear All, In page 8 of http://www.cs.tut.fi/kurssit/TLT-5806/Synch.pdf it is stated: All-digital symbol timing recovery scheme requires...

Dear All, In page 8 of http://www.cs.tut.fi/kurssit/TLT-5806/Synch.pdf it is stated: All-digital symbol timing recovery scheme requires higher-than-symbol-rate sampling. If this statement is correct what should be the minimum ratio? We have also a constraint on the max sampling rate of the ADC. It is 2.2x symbol rate. If we sample at 2.2x symbol rate should we also adjust the Matched filter...


1d correlation / convolution

Started by Anonymous in comp.dsp7 months ago 1 reply

I have the absolute amplitude of a digital signal that I want to auto correlate with self , also cross correlate with a different digital...

I have the absolute amplitude of a digital signal that I want to auto correlate with self , also cross correlate with a different digital signal [ absolute magnitude ] . I'm using a complex 1d fft to implement this . I only have the absolute values of the spectra to work with ; where the absolute value is defined as : square root of (Real^2 + Imaginary^2). After multiplying the a...


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