My final project is using TMS320C6713 for signal processing, and after i tried to work with this (including normalization and cross correlation), the result is there's too many delay that needed at a circle process, so the processed audio output is like distorted and mesh, not actually the natural audio input. How can I increase the performance by decreasing delay that needed to process the input?
Hi Yahya,
Based on your problem description, I can see a few DSP design options that you could follow in order to decrease your run-time problem.
1. Try to use acquisition interrupts rather than by polling;
2. try to use efficient C code such as, writing loops efficiently, be careful on you C types declaration (avoid char type for function arguments or return values. Instead use the int type even if the range of the parameter is smaller. This prevents the compiler performing unnecessary casts), calling functions efficiently, use of circular buffers, among others.
3. try to avoid unnecessary computation such as, multiplications by 1 or addition by 0, among others.
I would suggest you a good reading of this book: "Digital Signal Processing and Applications with the C6713 and C6416 DSK" by Rulph Chassaing.
Cheers.
Worst case- if you are comfortable then optimize the assembly code , you can improve the speed which may be introduced in C.
Use assembly language to increase the speed and Mat lab for simulation.
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