PSP Flare: Psycho-Acoustic Compressor Plugin by PSP Audioware

PSP Flare uses a single-band probability-based compression algorithm with a wide compression knee, which the developer positions as a way to reduce the usual audible artifacts of compression. A peak or RMS level detector lets you choose how the plugin responds to incoming level, and an optional automatic release readjustment adapts timing to the material.

Threshold and ratio cover a wide range of settings. A Dry/Compressed Mix control lets you blend the processed signal with the original, which is useful when you want to keep transients and natural movement while controlling peaks.

The side chain includes a high pass filter with smooth control and a link option, so you can keep low frequencies from triggering gain reduction. Lookahead reduces transients passing through the compressor, and an optional automatic makeup gain helps match levels when you adjust the settings.

An output brick wall limiter offers an adjustable ceiling and release time. Preamp section modeling on the input is included, and internal processing uses 64-bit double precision floating point math, which the developer says keeps cumulative errors in the filters very low across the frequency spectrum.