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Gain Structure Diagram

Taking audio specifications in to account, overall system gain structure diagrams have been constructed. Figure 28 depicts the input gain structure for a single channel. Included in this section is gain reduction for a balanced input, adjustable trim control, and an overall gain reduction before passing to the next stage.

Figure 28: Mixer unit gain structure diagram, input section.
\begin{figure}
\psfig{file=fig/gainstruc-in.eps}
\end{figure}

Figure 29 depicts the gain structure for the mix stage of the mixer unit. This stage only attenuates the input signal, up to 63dB, as per the high-level specification.

Figure 29: Mixer unit gain structure diagram, mixer section.
\begin{figure}
\psfig{file=fig/gainstruc-mix.eps}
\end{figure}

Figure 30 shows the gain structure for the output stage. Note a constant input section gain, and a constant gain on the balanced outputs.

Figure 30: Mixer unit gain structure diagram, output section.
\begin{figure}
\psfig{file=fig/gainstruc-out.eps}
\end{figure}



Steve Richardson 2000-07-06
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