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How MATLAB makes the distinction between P-Cores and E-Cores?

  It is known that modern CPUs have both Performance cores (P-cores) and efficiency cores (E-cores), different types of CPU cores that have different purposes and are designed for different tasks. P-cores typically have higher clock speeds and designed for high-performance tasks, while E-cores operate at lower clock speeds and focus on energy-efficient processing. In MATLAB, maxNumCompThreads returns the current maximum number of computational threads. Currently, the maximum number of computational threads is equal to the number of physical cores on your machine. How MATLAB makes the distinction between P-Cores and E-Cores ? NOTE:- Matlabsolutions.com  provide latest  MatLab Homework Help, MatLab Assignment Help  ,  Finance Assignment Help  for students, engineers and researchers in Multiple Branches like ECE, EEE, CSE, Mechanical, Civil with 100% output.Matlab Code for B.E, B.Tech,M.E,M.Tech, Ph.D. Scholars with 100% privacy guaranteed. Get MATLAB projects...
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Why standard Waveform from audio out gets distorted when i reduce the amplitude?

 In my attempt to generate a standard sine wave out of a sound card, i started using  matlab which has a function soundsc for scaling the output

 
 
 t = 0:1/48000:10;
 y = sin(1000*2*pi*t);
 soundsc(y,48000,[a b]);
its ok when my a and b are -1 and 1 respectively, when i try to make them even -0.9 and 0.9 respectively the standard sine wave of 1Khz gets distorted why so ?
 
are our sound cards will not be able to handle standard sounds ??




ANSWER



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The reason for this distortion is that some of the  signal values are being clipped. When you specify [a, b], it is assumed that signal you are attempting to playback has values in the range [a, b] and it allows you to scale it to the the range [-1, 1].
In your case, the signal "y" has values in the range [-1, 1] and by specifying [a, b] t be [-0.9 0.9], the values between [-0.9 0.9] in "y" are being scaled to [-1 1]. Values greater than 0.9 are scaled out of range and hence clipped.

The help for the soundsc function makes this clear.

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