What does Guitar FX Box do?
Just plug your guitar into the sound card input, start Guitar FX BOX and your guitar will scream and sing like you are using expensive analog effect pedals. You can apply a wide range of high quality effects to guitar, voice and other inputs. This high quality sound processing program is acting just like a good collection of guitar effects pedals. You can use several of them at the same time, even all if you need so.
Guitar FX BOX does REALLY real-time DSP. Signal is sampled from sound card input, processed and then sent to the output with VERY LOW LATENCY. Unlike many other "real-time" audio programs, I/O delay with Guitar FX BOX is extremely low, virtually undetectable! This is achieved using DirectSound (or WDM streaming) for fast access to the hardware (sound card) and fast DSP algorithms optimized for real-time processing. Through DirectSound, latency is about 20ms with most sound cards, or even less. When WDM streaming driver is used, latency can go as low as 5ms! Nevertheless, exact total i/o latency still depends on hardware/drivers.