Initial commit

crates/specialized/rtx-neuro-signal/src/lib.rs

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+//! # rtx-neuro-signal
+//!
+//! Signal processing for MEG/EEG neuroimaging data.
+//!
+//! ## Features
+//!
+//! - **Filtering**: Bandpass, highpass, lowpass, notch filters
+//! - **Artifact Removal**: SSP, ICA
+//! - **Resampling**: Up/downsampling with anti-aliasing
+//! - **Baseline Correction**: Mean, median, zscore normalization
+//! - **Time-Frequency**: Morlet wavelets, STFT, PSD
+
+#![warn(missing_docs)]
+
+pub mod baseline;
+pub mod filter;
+pub mod ica;
+pub mod resample;
+pub mod ssp;
+pub mod tfr;
+
+// Re-export main types
+pub use baseline::{BaselineMethod, baseline_correct};
+pub use filter::{FilterMethod, bandpass, highpass, lowpass, notch};
+pub use ica::{Ica, IcaMethod};
+pub use ssp::SspProjector;
+pub use tfr::{
+    CycleSpec, PsdResult, StftResult, TfrOutput, TfrResult, Window, psd_multitaper, psd_welch,
+    stft, tfr_morlet, tfr_morlet_adaptive,
+};
+
+/// Signal processing error types
+#[derive(Debug, thiserror::Error)]
+pub enum SignalError {
+    /// Invalid filter parameters
+    #[error("Invalid filter parameters: {0}")]
+    InvalidParameters(String),
+
+    /// Data length error
+    #[error("Invalid data length: {0}")]
+    InvalidLength(String),
+
+    /// Numerical error
+    #[error("Numerical error: {0}")]
+    Numerical(String),
+}
+
+/// Result type for signal processing operations
+pub type SignalResult<T> = Result<T, SignalError>;