Author Topic: Ultra low level signal resolution 1kHz @ -90dBFS  (Read 99 times)

Tranquility Bass

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Ultra low level signal resolution 1kHz @ -90dBFS
« on: March 25, 2021, 02:24:56 AM »
Test Methodology:

In this test we are looking at how the DAC is good at resolving very low level signal levels. In this case we feed each channel a low level digital signal of -90.31 dBFS which corresponds to a FS signal divided by 32768 or a reduction of signal magnitude by 16 bits !

Conclusion:

Even with a reduction of level equivalent to 16bits in magnitude we see the Ultimate Preamplier has no problem and resolves it cleanly compared to the DEQX Premate which adds a lot of noise and distortion to the signal.

« Last Edit: March 25, 2021, 04:37:38 AM by Tranquility Bass »
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Tranquility Bass

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24-bit Word Length @ 1Khz -90 dBFS
« Reply #1 on: March 25, 2021, 02:59:14 AM »
Below is the real time capture of the Left and Right Channels at -90.31dBFS @ 1kHz 24 bit Wordlength



Below is the FFT Specturm of the output above



« Last Edit: March 25, 2021, 05:34:26 AM by Tranquility Bass »
The home of the Ultimate-Preamplifier and Ultimate-Amplifier ! https://www.analog-precision.com/