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Operation
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Monitor (A low latency signal to feed talent headphones for an "off air" experience)
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HD (The output of the 5750's HD audio path)
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HD+Delay (FM audio after any delay is applied)
Word Length sets the word length (in bits) emitted from the digital-channel output.
The largest valid word length in the 5750 is 24 bits. The 5750 can also truncate its output word length to 20, 18, 16,
or 14 bits. The 5750 can also add dither, which we recommend.
Dither turns on or off addition of "high-pass" dither before any truncation of the output wordlength.
The amount of dither automatically tracks the setting of the Word Length control. This first-order noise shaped dither
adds considerably less noise in the midrange than does white PDF dither. However, unlike extreme noise shaping,
first-order noise shaped dither adds a maximum of 3 dB of excess total noise power when compared to white PDF
dither. It is thus a good compromise between white PDF dither and extreme noise shaping.
In many cases, the source material has already been correctly dithered so you will not need to add dither and can
set this control to Out. However, particularly if you use the Noise Reduction feature, the processing can sometimes
attenuate input dither to a point where it is insufficient to dither the output correctly. In this case, you should add
dither within the 5750 by turning this control on.
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The same controls from AoIP 1 output apply to the other 3 outputs.
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