Enhanced the dsp (Maxi32.c)

[dino65-dev]

Improvements

1. Code Modularization:

   • Extracted envelope processing into a separate function to reduce duplication and improve maintainability
   • Created dedicated functions for gain boost calculation and dithering/quantization

2. Improved Readability:

   • Enhanced comments with clear descriptions of algorithm components
   • Added function documentation using consistent comment style
   • Used better variable naming and consistent formatting

3. Performance Optimizations:

   • Used single-precision fabsf() and sqrtf() instead of general fabs() and sqrt()
   • Eliminated redundant calculations and improved code structure for better execution flow

4. Modern Coding Practices:

   • Added function prototypes at the top
   • Used explicit float literals (with 'f' suffix)
   • Added stdbool.h for clearer boolean operations
   • Improved consistency in function parameter handling

5. Bug Prevention:

   • Added range checks for critical parameters
   • Cleaned up experimental/commented code that could cause confusion

6. Detailed Inline Comments:

   • Every section has clear explanations of what it does
   • Commented on specific DSP techniques like envelope tracking and dithering
   • Explained the purpose of variables and state tracking

[bvijay74]

Thanks @dino65-dev for these code improvements to DSP. In the recent release, volume normalization is implemented. Since we did not want multiple DSP changes in the same release, I did not merge your PR for the current release. I will review and merge it soon.