Changelog

[v1.1.0] - 2024-12-19

IR Visualization: New --plot-ir flag to generate frequency response and waveform plots
Professional Plotting: Frequency response (dB vs Hz) and time-aligned waveform visualization
Valhallir Branding: Logo and filename information in generated plots
Modular Architecture: Separated plotting logic into dedicated pkg/plot package
Enhanced File Management: Plots are saved in the same directory as IR files with matching names
Improved Documentation: Updated README with plotting features and usage examples
Linear Fade-Out: New --fade-ms option to apply linear fade-out to IRs (default 5ms)
High/Low-Cut Filtering: New --highcut and --lowcut options for frequency filtering
Configurable Filter Slopes: New --cut-slope option for filter steepness (12, 24, 36, 48 dB/oct)
Audio Resampling: Automatic resampling between different sample rates (44.1, 48, 88.2, 96 kHz)
Enhanced Audio Processing: Cascade filtering for steeper slopes and better frequency response
Assets Integration: Added Valhallir logo for professional plot branding

Package Structure: Refactored codebase with separate packages for audio processing and visualization
Plot File Naming: Plots now use the same base name as IR files (e.g., ir.png instead of ir_plot.png)
Repository Organization: Updated .gitignore to exclude generated files while preserving essential test files
Enhanced Error Handling: Improved validation and error messages for all new features
Better Logging: More detailed progress information during processing

Clean Architecture: Separated concerns between audio processing (pkg/convolve) and visualization (pkg/plot)
Better Maintainability: Modular design makes it easier to extend and modify features
Enhanced Audio Quality: Improved filtering algorithms with cascade implementation
Professional Output: Better IR quality with fade-out and advanced filtering options

Initial public release: Valhallir Deconvolver
Fast FFT-based deconvolution for IR extraction
Automatic input conversion: accepts any WAV sample rate, bit depth, or channel count
Output IR in user-selectable sample rate and bit depth (WAV only)
Optional minimum phase transform (MPT) output
Silence trimming and normalization
Optional output IR length control (--length-ms)
Mono output (stereo/multichannel inputs are averaged)
CLI with urfave/cli, version flag, and detailed logging
Full documentation and usage examples in README