Output meter clip leds, 4 output meter clip leds – Sonnox Oxford Limiter User Manual
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11.4 Output Meter Clip LEDs
11 ADDITIONAL INFORMATION FOR PRO TOOLS AAX NATIVE/DSP
When
AUTO COMP is on in True Peak mode, the clip LEDs will not light. In this mode, the
Oxford Limiter can be said to be an ‘Oversampling Limiter’ or an ‘Inter Sample Peak
Limiter’.
11.4 Output Meter Clip LEDs
The Clip LEDs in the output meter always display whether the output signal is clipping.
This is in contrast to the RTAS/TDM version in which the Recon meter (when active) made
the output LEDs part of its meter, and thus did not alert the user if there was an output
clip present.
The output clip LEDs are very specific as to exactly what they indicate:
No Dither Mode
An active clip indicates the sample value has reached a value greater than or equal
to 0dBFs for one or more samples. In this case, the output clip lights should be in
agreement with the Pro Tools clip lights. The active clips LEDS are now drawn with a
reduced severity warning Orange colour in this case, because a floating point ‘over’
value is not necessarily a danger sign.
16 bit Dither Mode
An active clip indicates that the truncated output sample value in the fixed 16-bit
integer domain has hit the maximum possible values of +32767 or -32768, for one or
more samples. These values are not the same as 0.0dBFs, being very slightly
smaller, and so the Pro Tools clip LEDs will not indicate an agreement with the clips
on the Oxford Limiter plug-in. However, since the 16-bit integer value has hit digital
max, and the samples are destined to be written to 16-bit fixed precision media, the
clip LEDs are drawn with an elevated danger level of Red with a ‘16’ indication in
them to remind the user they have a particular meaning.
24 bit Dither Mode
A clip indicates that the truncated output sample value in the fixed 24- bit integer
domain has hit the maximum possible values of +8388607 or -8388608, for one or
more samples. These values are not exactly the same as 0.0dBFs (although it is
closer than 31 for 16-bit dither), and so the Pro Tools clip LEDs will not necessarily
indicate an agreement with the clips on the Oxford Limiter plug-in. As for the 16-bit
mode, since the 24-bit integer value has hit digital max, and the samples are
destined to be written to 24-bit fixed precision media, the clip LEDs are drawn with
an elevated danger level of Red with a ‘24’ indication in them to remind the user they