sample rate converters
digital routing
2 channel signal processing
6 channel signal processing




6 Channel Signal Processing


z-Q6 6 channel digital parametric equalizer
z-CL6 6 channel digital dynamics processor
z-K6 stereo-to-surround processor

z-Q6 and z-CL6 six-channel mastering processors


(Click on image for larger view)

Product Description

The z-Q6 and z-CL6 were designed from the ground up specifically for the surround-sound mastering suite for the ultimate in surround mastering. Comprised of the z-Q6 six-channel digital mastering equalizer and the z-CL6 six-channel digital dynamics processor, the z-Q6/z-CL6 suite incorporates Z-Systems's proprietary digital signal processing algorithms, intuitive user interfaces, and the highest-quality parts. Both units feature six channels of 24-bit /96 kHz digital processing and the ability to handle multiple simultaneous sample rates and wordwidths within each channel group.

The z-Q6 offers four bell-shaped filters and two shelving filters per channel, as well as individual channel volume offsets and a master volume control.

The z-CL6 offers six channels of compression/limiting with variable ratio, attack, release, threshold, and make-up gains per channel. In addition, the z-CL6 features a sophisticated linking mechanism whereby the different channel groups can be custom-tailored to trigger and compress in unison or separately.

Both the z-Q6 and the z-CL6 feature POW-r wordlength reduction and MIDI automation for snapshot automation. The z-Q6/z-CL6 are available individually or together as a suite.

Product Specifications (z-Q6)

Inputs: 3 AES/EBU (transformer-isolated, 110-ohm terminated)
Outputs: 3 AES/EBU (transformer-isolated, 110-ohm terminated)
Input/output precision: up to 24-bits
Sample rates supported: 44.1 kHz, 48.0 kHz, 88.2 kHz, 96 kHz
Gain control: from -95 dB to +12 dB
Gain resolution: 0.1 dB increments from +12 dB to -12 dB, 1 dB increments from -12 dB to -20 dB, 2 dB increments from -20 dB to -50 dB, 3 dB increments from -50 dB to -70 dB, 5 dB increments from -70 dB to -95 dB
Filter types: 4 parametric, 2 shelving x 6 channels
Center frequency resolution: 1/6-th octave ISO from 28 Hz to 20 kHz
Filter gain/cut: from -95 dB to +12.0 dB
Filter bandwidths: 24 steps from Q = 0.4 to Q = 8.0 (nominal)
Shelf filter slopes: 6 dB/octave
Dither types: 24-bit, 20-bit and 16-bit proprietary floating-point techniques
Noise shaping types: POW-r curves #2 and #3
Digital filter architecture: proprietary minimum roundoff-noise structure
Dynamic range: better than 144 dB
THD+N: better than -135 dB
Number of presets: 50
Power supply: 110/220VAC, 50/60Hz

Product Specifications (z-CL6)

Inputs: 3 AES/EBU (transformer-isolated, 110-ohm terminated)
Outputs: 3 AES/EBU (transformer-isolated, 110-ohm terminated)
Input/output precision: up to 24-bits
Sample rates supported: 44.1 kHz, 48.0 kHz, 88.2 kHz, 96 kHz
Compression ratios: 1.1:1 to 8.0:1
Limiter ratio: 100:1
Threshold: from -95.0 dBFS to 0.00 dBFS
Attack time: from 5.0 us to 950 ms.
Release time: from 5.0 us to 950 ms.
Highpass filters in detector chains: -12 dB/octave slope w/corner frequency from 10 Hz to 990 Hz
Dynamic range: better than 130 dB
THD + Noise: less than -130 dB
Number of presets: 50
Power supply: 110/220VAC, 50/60Hz


z-k6 stereo-to-surround processor


(Click on image for larger view)

Product Description

The widespread proliferation of surround sound has brought along with it the need for repurposing, or "upmixing" legacy stereo titles for multichannel release. In many cases, the original multitrack components may not be available for remixing or it simply might not be feasible for economic reasons. The question then remains: without access to the original multitrack components, what is the best way to derive a meaningful surround upmix from the stereo source? The answer, quite often, is the z-K6 K-Surround Processor.

K-Surround* is a patent-pending process for taking the ambience that's present in a stereo recording and spreading it across the surround channels. In this manner, the listener is completely enveloped in the recording's natural ambience. The z-K6 creates upmixes that sound like they're occurring in a natural acoustic space, with a sonic character portraying width, depth, and texture. The process sounds incredibly natural, void of synthetic r e v e r b e r a t i o n o r o t h e r colorations: nothing artificial is added. The z-K6 also gives control over derivation of a center channel from the stereo material, with a frontal image whose sense of width and depth can also be manipulated. The unit also has a number of features which are useful for surround monitoring, including individual channel level controls, a master level control, channel mutes, and channel solos. The features are incredibly useful in auditioning the derived upmix.

The z-K6 can handle up to 24 bits at 96 kHz, with a 192 kHz upgrade coming in Q3/2002. The unit also features TPDF dither and POW-r** wordlength reduction to generate 24-, 20-, and 16- bit outputs.

Product Specifications

Up to 96 kHz sampling rates. 192 kHz upgrade coming Q3/2002
4 0 - b i t f l o a t i n g - p o i n t implementation
TPDF and POW-r* wordlength reduction to 16, 20, and 24 bits