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Pitch 440? Hereford playing sharp!

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andrewhj

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Pitch 440? Hereford playing sharp!

PostWed May 20, 2020 8:40 am

When playing some music with friends recently, one complained that my organ was sharp.
I checked the organ setting (A=440) against several sources (my piano, a tuning fork, recordings on known instruments - and a coupe of sine tones from YouTube) and I found they were right. The organ (Hereford) was consistently sharp - over several stops and all manuals.
I have adjusted the pitch and found that it is actually in tune when set to at A=432.
Why is that?
I can understand that the original Hereford instrument may actually be tuned sharp, as many older instruments were, but Lavender say that the sample set is tuned to 440 and the Hauptwerk software setting should ensure that that is where it is.
Can anyone shed any light?
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mdyde

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Re: Pitch 440? Hereford playing sharp!

PostWed May 20, 2020 9:24 am

Hello Andrew,

[Topic moved here.]

Whenever the audio driver starts (as will happen after loading an organ), Hauptwerk asks the driver to set its sample rate to the value required by the particular sample set. For most sample sets that's 48 kHz, but with the default St. Anne's organ it's 44.1 kHz (for maximum compatibility with consumer audio hardware). I think that the Hereford requires 48 kHz.

If your audio interface/driver doesn't switch to the required sample rate then the pitch will probably be out by about a semi-tone (44.1 vs. 48 kHz). That might happen, for example, if the device's sample rate is locked to a specific value in its device control panel, or if another application (or Windows itself) is trying to use the same device for audio output at a different sample rate than Hauptwerk is requesting.

Does St. Anne's sound at the correct pitch? Is your audio interface correctly switching to 48 kHz when loading the Hereford?
Best regards, Martin.
Hauptwerk software designer/developer, Milan Digital Audio.
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dhm

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Re: Pitch 440? Hereford playing sharp!

PostWed May 20, 2020 11:15 am

To add to Martin's reply, did you check Large floating control panels > Pitch > Base pitch -,,,Hz?
If so, was the display showing 440?
Douglas Henn-Macrae
Authorized Hauptwerk Reseller
http://www.midi-organs.eu / http://www.gundulf.org.uk
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engrssc

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Re: Pitch 440? Hereford playing sharp!

PostFri May 22, 2020 8:23 am

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randallschmid

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Re: Pitch 440? Hereford playing sharp!

PostFri May 22, 2020 7:49 pm

Ed - Did you write that or is that early Philip Glass?
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engrssc

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Re: Pitch 440? Hereford playing sharp!

PostFri May 22, 2020 9:37 pm

No, it was written by a fella named Mono Tone. :roll:

And it took him 10 hours. :shock:

Rgds,
Ed
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David Butcher

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Re: Pitch 440? Hereford playing sharp!

PostSat May 23, 2020 10:29 am

Andrew and I have corresponded about this offline and the problem is solved. The cause was the fine-tuning in the Hauptwerk pitch menu settings; this had inadvertently been changed.

Thanks to all for their suggestions.
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mdyde

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Re: Pitch 440? Hereford playing sharp!

PostSat May 23, 2020 10:44 am

Thanks, David.
Best regards, Martin.
Hauptwerk software designer/developer, Milan Digital Audio.

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