[ProAudio] HX Pro was :FeralA - Recordings released encoded with Dolby A

[John Chester]

On 2/11/20 2:32 PM, Bill Whitlock via ProAudio wrote:

> Since it keeps the total bias fluxivity more constant, the physical 
> location where it no longer switches the remanent magnetic field on 
> the tape (the recording zone) should remain more stable, not less. In 
> non-HX recording, the location will move in response to high levels at 
> high audio frequencies. 


That seems reasonable to me, but I've never transferred a tape recorded 
with HX.

I expect that HX would cause AM modulation of the recorded bias level, 
but that's not a problem as long as the bias signal to noise at the 
lowest bias level is still adequate.

-- John Chester


>
> -----Original Message-----
> From: Alan Garren via ProAudio <proaudio at bach.pgm.com>
> To: Bill Whitlock <engineer_bill at verizon.net>; proaudio 
> <proaudio at bach.pgm.com>
> Sent: Tue, Feb 11, 2020 11:13 am
> Subject: Re: [ProAudio] HX Pro was :FeralA - Recordings released 
> encoded with Dolby A
>
> yes, I was casting about in my head for the appropriate work to call 
> HX, process seemed most likely.
> the point is that, as you point out, it modulates the bias, which 
> should then change the location of the trailing edge? What affect does 
> this have on the bias signal on the tape for John and Jaime to process?
> Cheers
> Alan
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