F & T Theory ::

Conventionally, the quality of audio devices are mostly specified by their gain curves in the frequency domain. But this is not enough to reproduce the sharp pulsive sound at the accurate timing. It is the well known fact that the phase curve should also be controlled flat over the full bandwidth, in order to reproduce the “wave form” of the original signal in the time domain. In fact, the reproduced sound of the devices without the accurate phase control has wave form astonishingly different from the original sound signal, losing all the sharpness and accuracy of timing.
 
There are reasons why this simple fact has not been considered seriously, such as, the technology has not been available to control both of gain and phase curves, and at the same time the very high skill of human to imagine the original music even from the distorted sound. However, it is obvious that there are still problems to be solved to improve further the quality of audio devices. Haniwa is aiming at this target, to reproduce the sharpness of the original signal, and eventually to reproduce the natural presence of the music.