SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
(OP)
Dear Simulink people. Im not much of a programmer and depended up on tools like simulink. Here is my question. I'm interested in data compression. I would like to:
Step 1: Sample a continuous time signal (microphone or generated polynomial function) with a certain samplerate to a set discrete data points.
Step2: Manipulate these datapoint in some way and take out points who are not interesting. And allocate points who are.
Step3: Interpolate or function approximate the strategic chosen data points.
My aim is to sample a function at a high frequency rate. Take out strategic data points. (compression) and interpolate the function to it looks similar to the original signal.
- Can this be done in only simulink, without programming in matlab? - What blocks do i need.
I have started with a sine genrator, a quantifier, and encoder. But i really dont know what all blocks to. Ill be happy to read you responses.
Best regards, Bart
Step 1: Sample a continuous time signal (microphone or generated polynomial function) with a certain samplerate to a set discrete data points.
Step2: Manipulate these datapoint in some way and take out points who are not interesting. And allocate points who are.
Step3: Interpolate or function approximate the strategic chosen data points.
My aim is to sample a function at a high frequency rate. Take out strategic data points. (compression) and interpolate the function to it looks similar to the original signal.
- Can this be done in only simulink, without programming in matlab? - What blocks do i need.
I have started with a sine genrator, a quantifier, and encoder. But i really dont know what all blocks to. Ill be happy to read you responses.
Best regards, Bart





RE: SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
You need to be more clear as to your intentions...
Dan - Owner
http://www.Hi-TecDesigns.com
RE: SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
My idea is:
- to equidistant sample a continues signal with a high sample rate. (let say i'm sampling a 0,001 sec audio signal with 48000 Hz)
- plot points in an array(matrix).
- think up an algorithm for picking out stategic values that. top (x,y) bottom (x,y) and points around the parabola's
- with those non equidistant (x,y) values or coordinates i want to spline interpolate multiple 2nd 3rd 4th ...degree polynomials to construct back the original signal.
but as i read, this looks like an impossible job to do in SIMULINK.
or not?
RE: SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
roughly polynomial fitting over x,y values for me is the same as curve fitting.
so what about lookup tabels?
RE: SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
RE: SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
I can't tell if you don't understand the actual process or if you're simply not using the correct terminology for what you want accomplished...
Dan - Owner
http://www.Hi-TecDesigns.com
RE: SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
TTFN
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RE: SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
RE: SIMULINK: sampling of a continuous signal, encoding, decoding and interpolation the data
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?