I was performing a test to check for the inconsistencies in latency that exist in USB interfaces (16rig included) but while testing i was surprised by the strange waveshape that resulted from a single-sample recording with 16rig.
Let me try to explain, step by step, what i did:
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i first created a single-sample audio file at 96KHz/24bit. The file has a level of -3dB and, as i said, only lasts for one sample.
It is a positive half-wave only (green track). -
i inserted this file repeatedly (as a sequence of short clicks) in one track of Magix’s Sequoia 17.
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plugged a balanced jack cable connecting Output 10 to Input 16 of 16rig and enabled the “Pad” in input 16 otherwise the level would be too high.
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Played the single-sample sequence in the first track and recorded in a second track.
The result is the Yellow track in the middle. -
Then changed ASIO interface in Sequoia into MOTU’s 24i/o and conneceted Output 20 to Input 20 with the same balanced cable used before.
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Repeated the test but now with the MOTU 24i/o recording into a third track in Sequoia.
The result is the brown track in the bottom.
There is something wrong with the waveshape resulting from the Arturia recording.
I have repeated the test with Nuendo 13, repeating the exact same steps and with the same original single-sample file.
The results were the same.
The sample recorded by Audiofuse 16rig displays a clear and very scary difference: there is a decay in the waveshape.
It’s not a sharp sample anymore, it became a decaying sawtooth.
Am i doing something wrong here or did Arturia do something wrong?
EDIT:
Just in case someone argues it might be the Input PAD being enabled that is affecting the shape of the sample, here’s the result without Input Pad (disengaged).
The channel 10 Output had to be reduced by -6.73dB to avoid saturating the input.
