Fostex G24S - Page 5

* ’ Fixed band:
Even in the superior sliding band, it does have faults. When the music signal is concentrated in
the comparatively high frequency (3kHz and higher), the NR effect drops in the band lower than
the music signal since cutoff slides toward the higher side. To compensate this, the NR effect is
maintained by using the fixed band for the region below 6kHz.
‘ 2 Sliding band:
Compared to the full band type NR even though music signals around 400-1 ,000Hz exist, it has
the superior nature of not largely degrading the NR effect above 1 kHz (hiss noise is concentrated
around 1 -2kHz) compared to when there is no music signal. It can be said that this characteristic
is cleverly employed in the C type.
Therefore, an ideal NR effect throughout the entire band is obtained by combining the two types of proc 
essing circuit to utilize the merits of both types. The Dolby S thus, is an ideal NR system with high noise
reduction capability, together with minimum affect on sound quality, attained by cleverly combining five
processing circuits for non-demanding processing of the signals.
This is a heretofore unknown high level system which demands high basic performances from the
recorder in order to draw out its superior characteristics. The G24S can be used without hesitation as
it more than fully comply to this demand.
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