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Keys off-tune on the Casavant for whatever reason


Hello, CB Forums,

Even if I may be a beginner with Hauptwerk, that didn't stop me from wanting to get a very decent Sample Set of an organ from one of my favourite organ builders, Casavant Freres.

I successfully got the Casavant Organ Sample Set (specifically, the Casavant, opus 3742 (1995), Bellevue, Washington) installed, though I’m encountering a problem with it.

The keys are not playing how they are supposed to. For example, Middle C sounds like B, while D flat sounds like C. It's very odd. Even after I tried to change the pitch in the pitch settings, nothing happened. I'm so confused about this.

Would anyone happen to know why that is the case? Could it be the audio settings that may have messed things up? Or could it be something else I may not be aware of?

Thanks.
by JonnyMusic
Jul 18, 2020 12:39 PM

Replies (5)

RE: Keys off-tune on the Casavant for whatever reason

Among the first things to consider is whether your audio interface is set to the correct sample frequency. The samples are at 48KHz, so if your audio interface is locked at 44.1KHz it can cause about 10% error in playback pitch (44.1/48) which is close enough to a half-step to sound like this.
by Hoofdwerk
Jul 18, 2020 01:02 PM

RE: Keys off-tune on the Casavant for whatever reason

Hoofdwerk wrote:

Among the first things to consider is whether your audio interface is set to the correct sample frequency. The samples are at 48KHz, so if your audio interface is locked at 44.1KHz it can cause about 10% error in playback pitch (44.1/48) which is close enough to a half-step to sound like this.

And would you care to explain how to inspect the sample set's frequency and how to adjust it (whether on Hauptwerk or somewhere else) accordingly?

I know the Casavant Sample Set was recorded in 24-bit/48 KHz, though I'm not sure how to get Hauptwerk to the correct sample frequency (48 KHz) instead of 44.1 KHz.

Thanks.

by JonnyMusic
Jul 18, 2020 01:09 PM

RE: Keys off-tune on the Casavant for whatever reason

You need to change whatever audio interface you are using, not a setting in Hauptwerk. If you post the brand of audio interface/driver/etc. you are using, someone may know exactly how to get it to recognize the 48KHz samples properly. Most interfaces switch frequency automatically, but others are more cantankerous.
by Hoofdwerk
Jul 18, 2020 01:17 PM

RE: Keys off-tune on the Casavant for whatever reason

Hoofdwerk wrote:

You need to change whatever audio interface you are using, not a setting in Hauptwerk. If you post the brand of audio interface/driver/etc. you are using, someone may know exactly how to get it to recognize the 48KHz samples properly. Most interfaces switch frequency automatically, but others are more cantankerous.

That's very strange though. Because when I load the St. Anne's organ (the regular one, not the one that's for 48 KHz locked audio drivers), every note stays in tune, while when I switch over to the Casavant one, it's off-tune/off-key.

For context, I'm mainly using the VST Link Plug-in, so how is changing the audio interface going to work? Because I don't see that being a realistic approach, considering that I primarily use Hauptwerk as a VST (via VST Link Plug-in) for Finale.

by JonnyMusic
Jul 18, 2020 01:49 PM

RE: Keys off-tune on the Casavant for whatever reason

Hoofdwerk wrote:

You need to change whatever audio interface you are using, not a setting in Hauptwerk. If you post the brand of audio interface/driver/etc. you are using, someone may know exactly how to get it to recognize the 48KHz samples properly. Most interfaces switch frequency automatically, but others are more cantankerous.

It turns out that you were right about changing the audio interface.

I've just found out recently that after switching to an audio interface that supports the 48 KHz output, the Casavant Organ plays back just as normal.

That was the issue the whole time. Audio interfaces.

How I had to adjust was by switching from my Portable USB DAC Amplifier that only supported 24 bit 44.1 KHz and switched over to using the 3.5mm audio in my gaming laptop (which I have Hauptwerk and the Casavant organ installed) and have set the sample rate to 48 KHz. And what do you know? It works very well now.

by JonnyMusic
Jul 18, 2020 06:18 PM

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