Grant,
Synchronous AM reception is rather like SSB, so the edges of the filter
are significant rather than the center. For non-synch AM, the center is
significant as you state.
The filter slope on the low frequency side will not be the same as on
the high frequency side.
Even though the 13kHz filter theoretically has zero offset, you may find
a better balance for the bass response by experimenting a bit with the
offset value for that filter.
73,
Don W3FPR
On 3/22/2015 4:50 PM, Grant Youngman wrote:
That could be. But the DSP bandwidth (10 kHz or 5 kHz in sync mode) is sitting
in the middle of a 13 kHz filter. There's a lot of room for slop before the
filter edges should come into play ...
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