[WIP] Analyze and update codebase for performance improvement

[Copilot]

Performance Optimization Plan for WaveRiderSDR

Analysis Completed

• Explored repository structure
• Analyzed code for performance bottlenecks
• Identified 8 optimization opportunities

Performance Optimizations To Implement

• Cache Hamming window function (currently recomputed every frame)
• Replace np.roll() with circular buffer for waterfall data shifting
• Move sample rate map to class constant (avoid dict recreation)
• Optimize FFT magnitude to dB conversion
• Use in-place array operations where possible
• Add performance comments to clarify optimizations

Testing & Verification

• Test application launches and displays correctly
• Verify all controls work as expected
• Verify waterfall display updates correctly
• Performance validation

Original prompt

Analyze and update the codebase in the 1090mb/WaveRiderSDR repository to improve its performance. Focus on optimizing the algorithms and streamlining the implementation to ensure faster execution. Preserve existing functionality and add comments to ensure clarity of any changes made.

This pull request was created from Copilot chat.

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