Measure Audio Filters With Sound Card

PC Sound Card as an Audio Measuring Device

https://bib.irb.hr/datoteka/197348.PC_sound_card_as_audio_measuring_device.pdf#:~:text=One%20way%20is%20to%20measure%20only%20analog%20part%2C,signal%20are%20generated%2C%20signal%20to%20noise%20ratio%2C%20etc.

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Using Sound Cards for Audio Measurement - Audio Precision

https://www.ap.com/blog/using-sound-cards-for-audio-measurement/

No, you can’t use a sound card to measure a high-power amplifier or low-noise and distortion DACs, ADCs, or many other devices. But yes, an ASIO audio interface or sound card can have enough capability to measure a speaker, microphone, or headphone.

Measuring low distortion levels with a sound card | diyAudio

https://www.diyaudio.com/community/threads/measuring-low-distortion-levels-with-a-sound-card.366714/

- Using (passive) filters to filter out the distortion of the DAC and to remove the fundamental from the ADC input - Subtracting the scaled output signal from phase corrected input in either analog or digital domain

Measure with Music: How to Read Analog Sensors Using …

https://nagimov.me/post/measure-with-music-how-to-read-analog-sensors-using-a-pc-sound-card/

Measuring Power Amplifier with Sound Card - Stack Exchange

https://electronics.stackexchange.com/questions/37730/measuring-power-amplifier-with-sound-card

The input impedance of the sound card is 1 K ohm or 1 M ohm (there is switch to select the impedance). I think the first step is creating a voltage divider, and match the impedance with the input impedance of the sound card.