Finally, a new algorithm not used on other sound cards before, the Dynamic Crossover has been specifically developed to achieve a good quality sound for several years.
Das Neue ZKL
Soon after the TSAR-1 Reverb came out, a modification appeared on the ISA and named itself ZKL. This meant the card was now fully compatible with the C-Media CNL2, and later ZKL2, ISA interface.
I later found out that the ZKL company was a joint project of Creative Labs and C-Media. Not only is this made by the same company as TSAR-1, the latter being produced by Creative Labs.
ZKL also brought an update to the voice scaling algorithm, which allowed to correct the voice scaling curve at the output of the TSAR-1, which had a bit of a roll off.
Compared to the TSAR-1 Reverb, the ZKL provided a better quality of sound, but had no further features.
Das Neue ZKL Reverb
Later, around 1996, another Reverb came out which was an improved version of the ZKL. With this new version, the voice scaling algorithm had been improved, and also included a proper stereo parameter.
It also provided "flanger" and a "chorus" effect.
ZKL Reverb Flanger ZKL Reverb Chorus
When a pair of TSAR-1 Reverb cards were connected, they were no longer possible to set a different volume for the two channels, something which was planned by Creative but never actually implemented.
The new ZKL Reverb did, however, improve on this.
It was then that Creative also released the Creative SoundBlaster series. The Creative SoundBlaster 1696 was a 16-bit card, while the SoundBlaster Live! 24-bit was a 24-bit card. Both cards were using the AWE32 chip, which had similar features as TSAR-1 Reverb. This was an important step towards more professional quality sound cards for home use.
ZKL Reverb Humble Player ZKL Reverb Humble Player
Software programs
Sonic Studio
A company named Sonic Studios developed software that uses the voice scaling to change the voice of the
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