Noise Lab - Focus and Sleep

Initial release of Noise Lab, with local noise generation, EQ and filter controls, sleep timers, saved configurations, background playback, and audio export. Noise Lab is a precise noise generator for sleep, focus, relaxation, and controlled sound design. Build the exact background sound you want from white, pink, brown, and black noise sources. Start with ready-made profiles, then shape the texture with parametric EQ, high-pass and low-pass filters, smoothing, stereo width, gentle motion, and output safety controls. Noise Lab generates audio locally on your device using native AVFoundation playback. No account is required, no streaming is needed, and your current sound profile can be saved for quick reuse. Features: - White, pink, brown, and black noise algorithms - Deep, Sub, Velvet, Seismic, and Void black noise profiles - Eleven preset sound archetypes for sleep, rain-like texture, focus, pulse, and low rumble - Five-band parametric EQ with per-band Q control - High-pass and low-pass filters with slope and resonance controls - Sound smoothing for softer, warmer, or more stable playback - Mono, natural, wide, and immersive stereo width modes - Output safety modes, limiter ceiling, fade-in, and sleep fade-out controls - Countdown and stop-at-time sleep timer - Optional sleep completion notification - Saved configurations for complete sound profiles - Background audio support for locked-screen listening - Export up to 120 minutes of audio as WAV, CAF, or M4A - Audio stability settings and live route diagnostics Noise Lab is designed for practical everyday listening: low-volume bedside sound, focus masking, headphone-friendly ambience, and reusable sound design profiles. For comfortable listening, start at a low volume and increase gradually. Noise Lab does not require an account and does not collect personal data. The app generates audio locally on your device using native iOS audio APIs. It does not use analytics SDKs, advertising SDKs, tracking SDKs, network audio streaming, or external sound libraries. Notification permission is optional and is used only for sleep timer completion alerts. You can disable notification access at any time in iOS Settings. Noise Lab supports background audio so playback can continue while your device is locked or while you use other apps.