System 2000 - Our Second-Tier System

Below is a view of the System 2000 User Interface in operation as it runs on our resident laboratory configuration. This GUI shows up on the Muse Receptor screen to enable our calibration. The user will rarely have any reason to modify these settings.

(click image for full size preview)

The System 2000 operation is virtually the same as for System 5000, except that it runs at 44.1/48 KHz sample rates. System 2000 costs substantially less than System 5000 since, at 48 KHz sample rates, it can't provide the same pristine quality as its big brother, and so it isn't necessary to utilize such expensive outboard equalizers. (Here we show it in operation with a Behringer outboard make-up equalizer.) The quality of digital signal processing suffers a bit at these lower sample rates. Still, compared to anything else this system sounds absolutely terrific!

System 2000 accommodates symmetric and asymmetric hearing characteristics. The left two panels enable us to dial in the user's audiology which consists of measured hearing threshold elevations at standard half-octave frequencies.

The last two frequency bins, 12 KHz and 16 KHz, cannot be reliably measured with current audiology practices. But we provide the ability to set these anyway, since some users have requested them.

When hearing is symmetric and exhibits straightforward sensioneuro impairment, we can forego all these audiology settings and simply dial in one parameter to match the user's hearing. That parameter is something we call V-Tuning. That one simple control is sufficient to set the entire thing up. (In the language of our mathematics, we have managed to orthogonalize a problem with more than 300 dimensions.)

The Atten control is provided to reserve some headroom for our processing. The 4-position swtich on the lower right panel allows us to switch between various outboard make-up equalizers.