HOLMImpulse: Measuring Frequency & Impulse Response

I have a new audio interface (Audient iD24), where the optical outputs I want to send audio to for measurements are ASIO channels 9 and 10. I love Holm Impulse but it only supports the 4 first ASIO inputs/outputs and I really need to use 9-10 out. Optical in is 3-4 so it's no problem. Do you guys/gals know of a workaround that can have Holm send output to ASIO out 9-10?
 
I connected a new USB sound card, it works normally. After starting Holm Impulse, this card appeared as another option in the input and output device menu, but the program tells me: ERROR while startup audiostream: Device unavailable. Thanks for any advice and ideas.
 
I've pulled these from the Wayback Machine, ca 2021.

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I am succesfully using this program with more or less glitches for about 10 years. However lately it behaves strange: when I start the measurement, it sends a kind of annoying digital noise insted of the measuring sinus sweep signal, using the SPDIF output on my PC. My music player (JRiver) works perfectly with the same SPDIF output. I tried to download it again, reinstalled it, still producing this strange error. Any idea what might cause this?
 
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That's interesting.

I occasionally get a disturbance at the end of a sweep at higher HF frequencies only.
Sort of like some gremlin or pixie crinkling / squelching a high pitched sweet wrapper😃
Or that what I hear at least.

Its been coming and going.

I have a feeling it's when I don't power my Phantom amp with it's own PSU (rely on USB power😱)
I've been using the PSU lately as I found it again after misplacing it for a while - haven't had this noise for a while / since
I will have to verify that though.
 
OK, that's odd. Like @Speedysteve7 I sometimes get the pixie noises at the end of a sweep. But I have found from time to time that HOLM gives me noise instead of a sweep. I usually change the soundcard settings to fix it, though I don't remember details. Glad that you fixed your problem.

I used HOLM for years and loved it, still find it handy for some things. But since it is long abandoned I have jumped on the REW bandwagon instead.
Sorry HOLMImpulse, you taught me a lot. 😥
 
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