On 7/14/19 5:42 PM, Richard L. Hess wrote:
> Plangent is wonderful, but a bit problematic as it is still
> inconvenient to properly archive the bias, but that's another story,
> and I think in the long run it would be good if we could do that.
We now routinely use 384k sample rate, which can capture bias up to
about 180 kHz in the same file as the audio. Higher bias frequencies
must still be down-converted by Plangent hardware and captured in a
separate file. The vast majority of older tapes which are most in need
of preservation and restoration have bias frequencies below 180 kHz.
-- John Chester