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QuantAsylum / QA40x

Releases (no source) for the QA402 and QA403 Audio Analyzer.
https://quantasylum.com/products/qa402-audio-analyzer
13 stars 1 forks source link

Extend distortion measurements below ~23 Hz #8

Closed QuantAsylum closed 2 years ago

QuantAsylum commented 2 years ago

https://forum.quantasylum.com/t/100-distortion-at-20-3hz-in-loopback/485

blurpy commented 2 years ago

Not sure if this is related, but in addition to 100% THD at 20Hz, it returns infinity above 7kHz when doing a 20-20000Hz sweep.

Screenshot 2021-09-30 at 20-11-39 QA40x Web - Frequency Sweep

It goes to 10kHz on the QA401 with the same settings. Is this a bug?

blurpy commented 2 years ago

Oh, the QA401 goes to 9kHz actually, not 10kHz: Screenshot 2021-10-02 at 12-14-06 QA401 Web - Frequency Sweep

QuantAsylum commented 2 years ago

Fixed low-end in 1.110. Leaving open as Blurpy's issues need more study