Cobalt Digital Inc 9305 Product Manual page 12

1
1-8
The Mono Mixer function generates an additional mono-mixed channel from
two selected embedded input channels serving as left and right inputs. The
resulting mono mix channel is available as an audio source for any of the 16
destination embedded output channels
Tone Generator Function
The 9305 contains four built-in tone generators (Tone Generator 1 thru Tone
Generator 4). Each of the four tone generators can be set to a different
frequency, and are available as audio sources for each embedded channel
audio output. 18 discrete sine wave frequencies are available, ranging from 50
Hz to 16 kHz (default frequency is 1.0 kHz).
Loudness Processor (Option +LP)
Note: Loudness processor function is an optional licensable feature. This function
and its controls appear only when a license key is entered and activated.
(This option (identified in Cobalt
initial order, or field-activated using a key string which is sent to you when this
option is purchased.)
If your card was purchased with option
supplement "5.1 and Stereo Loudness Processing Options for Compass
Cards (+LP51, +LP20) Manual Supplement" (OPT-SW-LP-MS) is included
in your documentation package. Supplement OPT-SW-LP-MS can be
downloaded from our website or requested using the Cobalt contact
information in this manual.
2.0-to-5.1 Upmix Function
Note: Upmix function is an optional licensable feature. This function and its controls
appear only when a license key is entered and activated. (This option (identi-
®
fied in Cobalt price lists as +UM) can be purchased upon initial order, or
field-activated using a key string which is sent to you when this option is pur-
chased.)
The 2.0-to-5.1 upmixer function receives a normal PCM stereo pair from the
Audio Routing/Gain Control function and upmixes the pair to provide 5.1
channels (Left (
Surround ( ), and Right Surround (
Ls
overwrites the six selected embedded channels with the new 5.1 upmix
signals (including replacing the original source stereo
new and signals).
L R
The 2.0-to-5.1 upmixer can be set to up mix in any of three modes: Always
upmix, Bypass upmix, or Auto enable/bypass upmixing. The Auto upmixing
mode looks at the signal levels on the selected channels and compares them to
a selectable level threshold. It then determines whether or not to generate 5.1
upmixing from the stereo pair as follows:
9305 PRODUCT MANUAL
®
price lists as +LP) can be purchased upon
), Right ( ), Center ( ), Low Frequency Effects (
L R C
)). Whenever the upmixer is active, it
Rs
9305 Functional Description
, loudness processor manual
+LP
and inputs with
L R
®
), Left
LFE
9305-OM (V4.1)