SI2457-D-FS Silicon Laboratories Inc, SI2457-D-FS Datasheet - Page 280
SI2457-D-FS
Manufacturer Part Number
SI2457-D-FS
Description
IC ISOMODEM SYSTEM-SIDE 16SOIC
Manufacturer
Silicon Laboratories Inc
Specifications of SI2457-D-FS
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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AN93
Figure 59. Adobe Audition Spectral View of a Good V.22 Transaction
An important parameter that is not obvious at first glance is the resolution in “bands” of the spectral display. There
is a tradeoff that must always be considered. This is set up in the Options->Settings Display tab in the Adobe
Audition product. This parameter allows for finer and coarser vertical (frequency) resolution at the cost of time-
domain uncertainty. Figures 60 and 61 depict the same wave files but with 256 bands versus 2048 bands. One can
see better timing details in one graph compared with the other. The 256-band spectral display shown in Figure 60
shows the fine timing details of the protocol, but with poor frequency resolution. The 2048-band spectral display
shown in Figure 61 allows more precise frequency measurements and signal separation, but at the cost of
obtaining a coarser time resolution.
280
Rev. 1.3
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