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):	-73.9	Average
Dynamic range, dB (A):	73.8	Average
THD, %:	0.011	Good
IMD, %:	0.059	Good
Stereo crosstalk, dB:	-71.9	Good
IMD at 10 kHz, %:	0.120	Average

General performance: Good

For a low cost motherboard I find that it delivers good on-board audio quality. Enthusiasts who want to build the ultimate Media PC are probably going to use an external sound card that they can patch directly into their amplifier.

Frequency Response

Frequency range	Response
From 20 Hz to 20 kHz, dB	-1.68, +0.25
From 40 Hz to 15 kHz, dB	-0.31, +0.25

Noise Level

Parameter	Left	Right
RMS power, dB:	-71.3	-70.8
RMS power (A-weighted), dB:	-73.6	-73.9
Peak level, dB FS:	-57.8	-58.4
DC offset, %:	-0.00	-0.00

Dynamic Range

Parameter	Left	Right
Dynamic range, dB:	+70.9	+71.4
Dynamic range (A-weighted), dB:	+73.8	+74.0
DC offset, %:	-0.00	-0.00

THD + Noise (at -3 dB FS)

Parameter	Left	Right
THD, %:	0.0107	0.0107
THD + Noise, %:	0.0535	0.0569
THD + Noise (A-weighted), %:	0.0441	0.0426

Intermodulation distortion

Parameter	Left	Right
IMD + Noise, %:	0.0616	0.0586
IMD + Noise (A-weighted), %:	0.0531	0.0501

Stereo crosstalk

Parameter	L <- R	L -> R
Crosstalk at 100 Hz, dB:	-66	-68
Crosstalk at 1 kHz, dB:	-71	-69
Crosstalk at 10 kHz, dB:	-72	-73

IMD (swept tones)

Parameter	Left	Right
IMD + Noise at 5 kHz, %:	0.0636	0.0611
IMD + Noise at 10 kHz, %:	0.1258	0.1263
IMD + Noise at 15 kHz, %:	0.1751	0.1733