All custom. Other than the base FFT library, all the rest is my own implementation.
View attachment 195507View attachment 195508View attachment 195509I just tried the software using Spectrum with a 1k signal, topping d10b and e1da cosmos. It works fine with asio4all but when I try flexasio and attempt to use settings it crashes the app in Windows 11.
Flexasio works fine in REW.
In addition I wanted to ask about differences in noise results between various configs.
There are 3 results below. One in Multitone with asio4all where noise/snr is being oenalized by being measured up the 1k fundamental. The other 2 are with REW using asio4all and flexasio.
I’d like to use flexasio since it provides better noise floor measurements on the d10b close to Amir’s but as I said I can’t with Multitone.
Any thoughts?
@pkane can you open controls of flexasio in Multitone without crashing?
What settings do you use in flexasio controls?
Also is why is Multitone showing white up into the 1khz fundamental?
View attachment 195751Also not using the flexasio Control panel but just trying to run Multitone with wdm-ks I get the following error.
I did try all the things you’ve suggested. This reference points out why wdm-ks would be the best choice and shared wasapi much less so.
FlexASIO/BACKENDS.md at master · dechamps/FlexASIO
A flexible universal ASIO driver that uses the PortAudio sound I/O library. Supports WASAPI (shared and exclusive), KS, DirectSound and MME. - dechamps/FlexASIOgithub.com
Yes. Bad noise performance.
That's great, @pkane. And I hate you in the same time now that I have to re-launch my runs for my next review.Fresh off the press! Multitone version 1.0.14 is now available.
Changes in 1.0.14
- Added: J-Test 24 and J-Test 16 test signals for jitter measurements
- Added: Option to change frequency axis display between log and linear
- Added: Option to select how many harmonic components to show on the display
- Added: Automatic numbering of harmonics on the frequency plot
- Changed: IMD calculations improved accuracy and switched to using the more common IMD calculations (SMPTE and CCIF)
- Changed: Level/IMD sweep plot X-axis will now show test signal amplitude (previously showed measured signal amplitude)
- Fixed: a rare 'index out of bounds' error
That's great, @pkane. And I hate you in the same time now that I have to re-launch my runs for my next review.
Is the new J-Test the same as sq:250/12kHz 1:16777216 you sent me?
By the way, is there any chance that you could add the possibility to save results in a decicated file, or say, a way to do customisable screenshots? I know using a battery powered laptop dedicated for measurements (works much better for unbalanced captures using the Cosmos), but screenshots really lack resolution (1080p) against ones from my main PC (1440p). An option to lock zoom in X/Y axis would be cool, also.
Anyway, thanks for your awesome work !
By the way, is there any chance that you could add the possibility to save results in a decicated file, or say, a way to do customisable screenshots?
You made my day twice.A new version of Multitone (1.0.15) is available that adds a button to copy the current plot to clipboard.
The image is copied into Windows clipboard. After you press the camera button, you can go to any another application where you can paste an image, including into composing a new message on ASR, and just press Ctrl-V to paste the image.You made my day twice.
Unfortunately, the button doesn't work for me. Unless screenshots are supposed to go in some place. I didn't find where.