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======phatstereo======

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{{ phatpic1.png}}
Phat-Stereo is a spreading algorithm that uses stereo cross-coupling to simulate surround sound in stereo speakers and other 2-channel situations. The ear is most responsive to interaural phase shifts below 2 kHz, so this increase in phase shift results in a widening of the stereo image. 

A 3D enhancement, it yields an enriched surround field both for headphones and for stereo speakers.

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Two parameters control the block:

**Cut Freq (Hz)** - Controls the cutoff frequency of the first-order lowpass filter. Determines the frequency range of the added out-of-phase signals. For best results, the range should be 500 Hz 
to 2 kHz. 

**Level** - Controls the output level of the filter; -80dB would basically be a passthrough with no 
signal modification.

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