SPAN is a free real-time “fast Fourier transform” audio spectrum analyzer AAX, AudioUnit and VST plugin for professional sound and music production applications.
K-Meter by mzuther (@KVRAudio Product Listing): K-Meter is a free implementation of a K-System meter according to Bob Katz' specifications. Features: RMS and ITU-R BS.1770-1 loudness weighting. True peak meter. Small monitoring section. Supports mono, stereo and 5.x surround sound. Fully validated meter output. Additional stereo meter and correlation meter. Support for skins. Loudness meter for correctly setting up tracking and mixing levels (gain staging). Digital recordings. The digital revolution brought many advantages to the field of audio processing: higher fidelity, less noise, non-degrading copies and the endless possibilities of digital signal processing.
SPAN provides you with a very flexible “mode” system which you can use to setup your spectrum analyzer preferences. You may specify Fourier block size in samples, FFT window overlap percentage, spectrum's visual slope. Beside that you can choose to display secondary spectrum of a desired type (e.g. real-time maximum, all-time maximum). Spectrum can be smoothed out visually for an easier examination.
SPAN supports multi-channel analysis and can be set to display spectrums from two different channels or channel groups at the same time. Spectrum's color can be chosen to taste.
K-meter Vst Download Free
SPAN also features output level metering with adjustable ballistics and integration time, EBU R128, K-system metering (including calibration K-system metering). SPAN displays level metering statistics, headroom estimation and true peak clipping detection. Correlation metering is available as well.