PPK's SPLMeter v2.0.0

What's New in v2.0

New Features

• Save WAV — records the last Keep Last seconds of Input 01 + 02 as a stereo 24-bit WAV file
• Basic / Advanced mode — app starts in compact Basic mode (SPL meter only); Advanced mode adds the full log plot and psychoacoustic overlay
• 32-channel input — extended from 8 to 32 inputs; Settings shows 4 rows of 8 per-channel mute buttons (IN01 – IN32)
• Live clock — auto-updating date/time label in the title bar
• Note field — three-line free-text annotation field in the title bar

UI Improvements

• Settings panel reorganised into four labelled sections: General, FFT, Analysis, Input Channels
• Psychoacoustic checkboxes — Roughness, Fluctuation, Sharpness, Loudness now have individual toggle buttons with radio-button behaviour; labelled "Left y axis:" / "Right y axis:"
• FFT frequency axis — centre-frequency labels (20 Hz – 20 kHz) added along the FFT x-axis
• Calibration, Hold Time, FFT Gain, FFT Smooth — changed from rotary knobs to short vertical faders
• Roughness — distinct teal colour (was similar to dBA orange)
• Reset button — text colour changed to red for quick identification
• Default window width increased to 1500 px

Fixes

• Removed garbled characters (UTF-8 en-dash/em-dash rendered as â€") from all overlay strings and tooltips