Meyer Sound SIM 3 User's Guide download pdf (Page 57)

CHAPTER 3

SIM 3 Configurations and Branches

CHAPTER 3: SIM 3 CONFIGURATIONS AND BRANCHES

3.1. SETTING UP BRANCHES

3.1.1. Overview

Within SIM 3, the setup and management of the signal paths from console through processor

to the loudspeaker and room are organized into Branches. A branch consists of three

measurement points:

■ Console: The Console is the audio input into the sound reinforcement system (source),

typically the output of a mixing console or other source. This measurement point is

exactly the same as the processor input.

■ Processor: The Processor is the audio output from the signal-processing chain that

lies between the console output and the ampliﬁer input. Typically this chain includes

equalizers and delay lines.

■ Microphone: The Microphone is the output of a measurement microphone located at

some position in the venue that captures the audio from the loudspeakers within the

room.

Within a typical SIM measurement session, the user will create many branches to have

complete information on all the elements of the sound system and the interaction between

them at different locations.

3.1.2. Deﬁning Branches

A branch is a series of three connected measurement points that monitor the ﬂow of a signal

from origin to its destination. The normal ﬂow is from a console output through a processor

to a speaker in the room. The three access points are Console — the point of origin,

Processor — the output of the signal processing chain, and the Microphone.

The primary requirement is that all three points are driven by the same original source

signal. With this satisﬁed, the measurement points can be used to make transfer function

measurements that will characterize the processor electrical response and the acoustical

response of the driven speaker in the room.

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Meyer Sound SIM 3 User's Guide Page 57