page 3 – 28
FM-531HD / May 2013
F M - 5 3 1 H D P R O G U I
L – R gain. This simple step allows you to tailor the audio so that stereo enhancement
will occur in bands most critical to the human ear without raising the L – R gain in
the entire spectrum, which adds little audible benefit but can aggravate multipath. The
most dramatic changes will be heard in Bands 3 & 4. A good way to add some stereo
enhancement to the overall mix would be to raise Band 3 & 4 to b2 and +3 dB.
HD LIMITER MENU
The 31 Band HD Limiter
screen contains the controls necessary to fine tune the
sound of the HD output as well as adjust its peak control method.
31 Band Drive
The 31 Band Drive control determines the amount of input signal ap‑
plied to the 31‑band limiter – less drive creates a more gentle sound while
still controlling peaks. Higher settings make the sound more aggressive
by increasing short term density. Extremely high drive settings which
cause more than 5‑6dB of continuous gain reduction are unnecessary,
can become fatiguing, and may create a less than desirable operating
condition for a perceptual codec. Drive is adjustable from 80 to 100%.
31 Band Limiter Sidebar
Just like in the five band AGC/Compressor, there is a
sidebar with some special adjustments available to the user
to tailor the sound of the 31‑band limiter. It should be noted
first that all bands of audio processing can be adjusted as
a group or independently in the sidebar menus. For more
information on how to adjust these controls, please see the
“FM‑531HD Graphical Interface Operation” section of
this chapter.
Summary of Contents for FM-531 HD
Page 2: ...Technical Manual Wheatstone Corporation May 2013 FM HD Digital Audio Processor FM 531hd...
Page 122: ...page A 2 FM 531HD May 2013 A P P E N D I C E S Appendix A General Specifications A 3 Contents...
Page 128: ...page A 8 FM 531HD May 2013 A P P E N D I C E S Appendix B FM 531HD GPI Interface A 9 Contents...