Demo: CH3CHO, quartet, poor shim
Here's an FID and the spectrum of the same quartet as on the previous page, however, with arbitrarily poor set shims Z1 and Z2. As you can see in the spectrum the result is desasterous. You can also hear the poor shim from the much more rapid decay of the FID. Despite the rapid decay, some sounds persist quite long, indicating some still sharp signals in the spectrum.
CH3CHO, quartet, poor shim, FID
CH3CHO, quartet poor shim, spectrum
CH3CHO, quartet, poor shim, FID sound, .aiff
CH3CHO, quartet, poor shim, FID sound, .wav
MUSICIANS Home Page