User manual BIAMP MSP11

[. . . ] MSP11 Multi-Function DSP System Processor Operation Manual Biamp Systems, 10074 S. W. Arctic Drive, Beaverton, Oregon 97005 U. S. A. an affiliate of Rauland Borg Corp. (503) 641-7287 www. biamp. com blank print update September 7, 2005 Q: What is this 'Leveler' inside the MSP11 & MSP22e? The Leveler function, in the Gain Manager section of an MSP11 or MSP22e, is an automatic gain control (AGC). This means that the Leveler automatically adjusts volume levels up or down to compensate for signals that are softer or louder than normal. Q: What can this 'Leveler' do for me and my customer? The two most common applications for the Leveler are to control music sources which have been recorded at different levels, and to control different levels of speech caused by the person(s) speaking and/or their varying distances from the microphones. Example #1: A background music system utilizing a CD player as the primary source. [. . . ] The lower graph area shows the cumulative effect of all equalization. `Meters' are provided to display input/output levels at the EQ section. EQ Mode selects either Parametric or Graphic equalization (see Parametric EQ Screen on previous page). Bypass EQ defeats all parametric & graphic equalization filters (not HPF & LPF), without changing actual settings. 7 SETUP DIGITAL DELAY SCREEN The Digital Delay screen is used to adjust delay time settings. Delay time is shown in the window, with adjacent buttons providing the up/down adjustments. Coarse buttons change the delay time in 1 milli-second increments. Fine buttons change the delay time in 21 micro-second increments. Delay time may also be entered directly into the window, but will be rounded to the nearest available setting. Msec allows delay times to instead be entered & calculated in terms of distance measurements (inches, feet, centimeters, or meters). NOTE: Distances should be measured in terms of the difference between direct and delayed sound sources, with respect to the listener (i. e. . . direct source to listener = 200 feet; delayed source to listener = 20 feet; distance = 180 feet). Also, when sounds from the direct source & delayed source reach the listener at roughly the same volume level, additional delay (approximately 10~30 milliseconds) may be added to the calculated delay time. This added delay will produce what is known as the `Haas Effect', which gives the listener the impression that all sound is emanating from the direct source. This added delay should be fine-tuned by ear to achieve the desired results. Bypass temporarily sets delay time to minimum (1. 333 msec). 8 SETUP LOGIC INPUT DEFINITION SCREEN The Logic Input Definitions screen is used to assign specific `actions' to the eight Logic Inputs. Logic Inputs allow remote control of the MSP11 via external circuits, such as switches, contact-closures, active driver circuits, and/or `open-collector' logic outputs (see Logic Inputs on pg. From the factory, Logic Inputs 1~8 have no pre-programmed functions. However, using the Logic Input Definitions screen, each Logic Input may be assigned various `actions'. Logic Inputs selects which Logic Input is to be defined. NOTE: Since Logic Inputs are controlled by switches, contact-closures, etc. , each Logic Input may be assigned certain actions to perform when the switch is `opened', and different actions to perform when that same switch is `closed'. Binary Mode selects a special group of Logic Inputs which can also be defined. This allows certain actions to be performed only when a specified condition of open/closed Logic Inputs exists within the group. When a Binary Mode is selected, indicators for the chosen group of Logic Inputs will appear below. [. . . ] NOTE: Baud rate may need to be changed when the MSP11 is being used in RS-232 systems with other products having a lower maximum baud rate. Link Port Connections: The 9-pin Sub-D (female) connector on the MSP11 rear panel provides the RS-232 compatible serial interface signals used for linking multiple BIAMP products within a system. The Link Port of one device simply connects to the Serial Port of the next device, and so forth (see diagram below). Link cables are available as an option (Biamp #909-0057-00). [. . . ]