You can use the Isemcon EMX7510 its very good and affortable
www.isemcon.com/datasheets/iSEMcon EMX-7150.pdf
www.isemcon.com/datasheets/iSEMcon EMX-7150.pdf
Does the near field measurement in Holmimpulse it's only placing microphone close to the speaker?
From Speaker Workshop I remember there was special option to do this kind of measurements.
How about Holm, any specific procedure?
From Speaker Workshop I remember there was special option to do this kind of measurements.
How about Holm, any specific procedure?
I'm not aware of any special procedures for doing nearfield with holm impulse. You may need to reduce levels in order to avoid clipping, but apart from that I think just measure as normal.
Tony.
Tony.
Like Wintermute said and remember to increase the gate time - I usually usually use 100 msec (i.e. down to 10 Hz).
Last edited:
I hope this is the right place to ask. I need some basic "how to" on stitching in Holmimpulse. I assume the arrow between measurement A and B is relevant on the stitch icon, but I don;t know how to apply it. Also, it would be helpful to know how to match the decibel levels on two different measurements.
Thank you,
Michael
Thank you,
Michael
I have never done stitching in HOLM, would be interested to see what you find.
As for levels, they can be adjusted up or down in the same window where you find smoothing and gating.
As for levels, they can be adjusted up or down in the same window where you find smoothing and gating.
Let me try a different approach. What is the difference between Stitching and Sum? I Summed a woofer response and a tweeter response, amplitude matched, and received a nice curve that combined the two from 20 to 20K. With Stitch, I have more difficulty.
I believe that "stitch" combines two data sets into one by merging them together using the widow that comes up showing the region of the merge. Below is one data set, A and above the other B and in the middle is a merging of the data. I use this same technique quite often in my own software.
Stitch Simulated
I don't remember ever using the Stitch function, so I just gave it a try. The graph shows two log sweeps, one that is 2nd order high passed, the other 1st order low passed but not at the same frequency. Stitching was done at 700Hz. Stitch lower by 5dB so that it's visible.
I used the Match Phase option, which is default. HOLM bumps up the LP (woofer) response by 0.3dB after stitching. Maybe part of the phase match?
I don't remember ever using the Stitch function, so I just gave it a try. The graph shows two log sweeps, one that is 2nd order high passed, the other 1st order low passed but not at the same frequency. Stitching was done at 700Hz. Stitch lower by 5dB so that it's visible.
I used the Match Phase option, which is default. HOLM bumps up the LP (woofer) response by 0.3dB after stitching. Maybe part of the phase match?
Attachments
Holm impulse and Roon
Hi guys,
Does anyone know how to/tryed to have Holm Impulse output run via Roon? As Roon has EQ and Speaker setup options, it would be quite iteresting to be able to make changes in Roon EQ and to be able to monitor them with Holm Impulse. Possible? 🙂
Hi guys,
Does anyone know how to/tryed to have Holm Impulse output run via Roon? As Roon has EQ and Speaker setup options, it would be quite iteresting to be able to make changes in Roon EQ and to be able to monitor them with Holm Impulse. Possible? 🙂
Well, basically yes... so to apply EQ into the test signal and then being able to record that via HOLMImpulse - thus one could make small EQ changes to get a response that takes into account room modes, taste etc.
But best for me would be if Roon could be the output of HOLMImpulse (HOLMImpules - Roon - amplifier), because Roon does have EQ and I play quite a lot of music via Roon. Thus I could make the EQ in Roon and use the same specs for play back.
But best for me would be if Roon could be the output of HOLMImpulse (HOLMImpules - Roon - amplifier), because Roon does have EQ and I play quite a lot of music via Roon. Thus I could make the EQ in Roon and use the same specs for play back.
HolmImpulse on Windows 10.
For reference.
I recently rebuilt my laptop with a new SSD and installed Windows 10 from an image downloaded from Microsoft. The classic "Clean Install." But I found that HolmImpulse would not install, lacking the .NET 2.0 framework. I installed .NET 6, but Holm didn't like it.
Some digging found that .NET 2, 3, 3.5 are already on Windows 10, but they need to be turned on or activated.
To turn on .Net 2 & 3 in Win10 go to the control panel and look for Windows add-ins. Turn on .NET 3.5 (2 is included) HolmImpulse will now install and happily run. I use the 32 but version of Holm, because I've found it more stable than the 64 bit version.
For reference.
I recently rebuilt my laptop with a new SSD and installed Windows 10 from an image downloaded from Microsoft. The classic "Clean Install." But I found that HolmImpulse would not install, lacking the .NET 2.0 framework. I installed .NET 6, but Holm didn't like it.
Some digging found that .NET 2, 3, 3.5 are already on Windows 10, but they need to be turned on or activated.
To turn on .Net 2 & 3 in Win10 go to the control panel and look for Windows add-ins. Turn on .NET 3.5 (2 is included) HolmImpulse will now install and happily run. I use the 32 but version of Holm, because I've found it more stable than the 64 bit version.
Thanks Pano! I've just done this as I had not set up on my rebuild on my laptop! hopefully using the 32bit version will give me less grief too!
Now to go and try and do some mic calibration 🙂
Tony.
Now to go and try and do some mic calibration 🙂
Tony.