Real-Time equalizing has become possible
by this Windows app!! (Freeware)
System requirement is following.
Sound card needs to be full-duplex type, which accepts recording and playing
Microphone and speakers are connected to
DirectX Runtime is installed. See following
site to download. Windows 98 Windows Me Windows 2000 : DirectX 9.0a Windows 95 : DirectX 8.0a
Windows XP already includes DirectX.
Windows NT is out of support.