| Products > Test Equipment |
| Audio via Sound Card Line In and Spectrum Analyzer |
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| Fungus:
--- Quote from: radiolistener on July 12, 2023, 10:55:17 am ---For example, if you don't expect very expensive top performance, Creative E-MU 1212M is a good working horse with 24-bit ADC. --- End quote --- Not going to fit in his Microsoft Surface. :) --- Quote from: kirk spec on July 12, 2023, 08:26:59 am ---I just want a rough idea how the USB Hub is able to route the power from the external mini-usb adaptor to one of the USB slot when the slot is already getting power from the notebook USB? Won't the mini-usb adaptor power and notebook usb power collide? I need to know in preparation to power the Behringer. --- End quote --- That's what electronics engineers are paid for. I believe you're over-thinking the sound card aspect. If you want to record human voice the microphone will be orders of magnitude more important than the sound card. Plus: Many voice-optimized microphones come with USB output these days so you won't even need a sound card. |
| dobsonr741:
Try Rew to see the noise floor of your laptop ADC: https://www.roomeqwizard.com/ |
| Fungus:
--- Quote from: dobsonr741 on July 12, 2023, 12:55:59 pm ---Try Rew to see the noise floor of your laptop ADC: https://www.roomeqwizard.com/ --- End quote --- That page recommends this calibrated USB microphone: https://www.minidsp.com/products/acoustic-measurement/umik-1 I don't know anything about it but it could be what the OP really needs instead of a sound card (or something similar to that) |
| kirk spec:
The E1DA Cosmos ADC has this spec: Input Range 1.7Vrms 640Ω, 2.7Vrms 1kΩ, 3.5Vrms 1.3kΩ, 4.5Vrms 1.66kΩ, 6.7Vrms 2.46kΩ, 7.6Vrms 2.82kΩ, 8.5Vrms 3.12kΩ, 10Vrms 3.48kΩ, 43Vrms 13.6kΩ Note: Unbalanced impedance about 30% less. I know input and output impedance is important due to the idea of resistive divider where the larger value will receive more voltage. How do I measure the resistance above? Is it the ADC input impedance or is it the source impedance of the Line Out? |
| RPP:
I've been using a Focusrite Scarlett 2i2 with REW, AudioTester and ARTA software for a while now. It works well for me . . . Rich |
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