In 2011, several 378s on the North London Line suffered shutdowns due to harmonic interference from using the line for freight movement.
2.
It also offered 14dB more dynamic range than 44.1kHz / 16b audio, and because of its very high sample rate ( 644kHz ), it did not contain the same anti-aliasing filters necessary in PCM recorders at the time, which were thought to cause undesirable harmonic interference.
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