Module signals 

Deterministic test signal generators for audio validation.

This module provides functions to generate standard test signals used in audio circuit validation. All generators are deterministic (no randomness) to ensure reproducible test results.

Available Signals

Signal	Use Case
impulse	Impulse response measurement, FIR characterization
sine	THD measurement, frequency response at single point
two_tone	IMD (Intermodulation Distortion) testing
exp_sweep	Frequency response measurement, system identification
silence	DC drift testing, noise floor measurement
tone_burst	Attack/release timing, transient response
level_sweep	Gain curves, compression characteristics

Example

use pedalkernel_validate::signals;

let sr = 48000.0;

// Generate a 1kHz test tone
let tone = signals::sine(sr, 1000.0, 0.1, 1.0);

// Generate a frequency sweep for response measurement
let sweep = signals::exp_sweep(sr, 20.0, 20000.0, 1.0, 0.8);

Enums

SignalSpec

Signal specification from config.

Functions

dbvu_to_peak

Convert dBVU to peak voltage.

exp_sweep

Generate an exponential (logarithmic) frequency sweep.

impulse

Generate an impulse (unit sample at t=0).

level_sweep

Generate a level sweep for static gain curve measurement.

silence

Generate silence (zeros).

sine

Generate a sine wave.

tone_burst

Generate a tone burst for attack/release timing measurement.

two_tone

Generate a two-tone signal for IMD (intermodulation distortion) testing.