Rightmark Audio Analyzer
We used Rightmark Audio Analyzer together with a loop-back cable to analyze the quality of the on-board audio solution.
Summary
Frequency response (from 40 Hz to 15 kHz), dB: | +0.25, -0.31 | Good |
Noise level, dB (A): | -85.2 | Good |
Dynamic range, dB (A): | 85.2 | Good |
THD, %: | 0.0082 | Very good |
IMD, %: | 0.021 | Good |
Stereo crosstalk, dB: | -82.9 | Very good |
IMD at 10 kHz, %: | 0.103 | Average |
General performance: Good
I find these results are ok for a board in the PX925XE's price range. If you use the board in your office PC you will most probably not need sound anyways.
Frequency Response
Frequency range | Response |
From 20 Hz to 20 kHz, dB | -1.66, +0.25 |
From 40 Hz to 15 kHz, dB | -0.31, +0.25 |
Noise Level
Parameter | Left | Right |
RMS power, dB: | -82.4 | -83.3 |
RMS power (A-weighted), dB: | -85.0 | -85.2 |
Peak level, dB FS: | -69.6 | -68.9 |
DC offset, %: | -0.00 | -0.00 |
Dynamic Range
Parameter | Left | Right |
Dynamic range, dB: | +83.4 | +83.7 |
Dynamic range (A-weighted), dB: | +85.2 | +85.5 |
DC offset, %: | -0.00 | -0.00 |
THD + Noise (at -3 dB FS)
Parameter | Left | Right |
THD, %: | 0.0082 | 0.0089 |
THD + Noise, %: | 0.0170 | 0.0174 |
THD + Noise (A-weighted), %: | 0.0159 | 0.0165 |
Intermodulation distortion
Parameter | Left | Right |
IMD + Noise, %: | 0.0223 | 0.0215 |
IMD + Noise (A-weighted), %: | 0.0184 | 0.0181 |
Stereo crosstalk
Parameter | L <- R | L -> R |
Crosstalk at 100 Hz, dB: | -79 | -82 |
Crosstalk at 1 kHz, dB: | -82 | -81 |
Crosstalk at 10 kHz, dB: | -83 | -67 |
| | |
IMD (swept tones)
Parameter | Left | Right |
IMD + Noise at 5 kHz, %: | 0.0468 | 0.0464 |
IMD + Noise at 10 kHz, %: | 0.1708 | 0.1697 |
IMD + Noise at 15 kHz, %: | 0.2496 | 0.2502 |