Page 12 - Onboard Sound Frequency Analysis
The Intel Desktop Board DZ77GA-70K the new Realtek ALC898 24-bit/192 kHz audio codec, which specifies an impressive 104dB signal to noise ratio on the input and 110dB signal to noise ratio on the output. From a design perspective, its true performance really depends on how it is implemented on the board. This means a high performance chip will only be high performance if it is implemented correctly. To find out how it is in real if, we put it through our usual RightMark Audio Analyzer tests, and here are the results.
Test Information:
Testing device: Speakers (Realtek High Definition)
Sampling mode: 16-bit, 44 kHz
Interface: MME
Testing chain: External loopback (line-out - line-in)
RMAA Version: 6.2.5
20 Hz - 20 kHz filter: ON
Normalize amplitude: ON
Level change: -1.1 dB / -0.8 dB
Mono mode: OFF
Calibration singal, Hz: 1000
Polarity: correct/correct
Frequency response
From 20 Hz to 20 kHz, dB: -11.69, +0.20; -11.44, +0.44
From 40 Hz to 15 kHz, dB: -0.16, +0.20; +0.08, +0.44
Noise level
RMS power, dB: -90.3, -90.1
RMS power (A-weighted), dB: -91.4, -91.2
Peak level, dB FS: -77.2, -75.7
DC offset, %: +0.0, +0.0
Dynamic range
Dynamic range, dB: +90.4, +90.3
Dynamic range (A-weighted), dB: +91.5, +91.3
DC offset, %: +0.00, -0.00
THD + Noise (at -3 dB FS)
THD, %: +0.2133, +0.2134
THD + Noise, %: +0.3052, +0.3053
THD + Noise (A-weighted), %: +0.3929, +0.3931
Intermodulation distortion
IMD + Noise, %: +0.4323, +0.4323
IMD + Noise (A-weighted), %: +0.5657, +0.5656
Stereo crosstalk
Crosstalk at 100 Hz, dB: -89, -87
Crosstalk at 1000 Hz, dB: -90, -90
Crosstalk at 10000 Hz, dB: -79, -81
IMD (swept tones)
IMD + Noise at 5000 Hz: 0.2183, 0.2182
IMD + Noise at 10000 Hz: 0.4053, 0.4051
IMD + Noise at 15000 Hz: 0.5985, 0.5986
Test Summary:
Frequency response (from 40 Hz to 15 kHz), dB: +0.20, -0.16 - Very good
Noise level, dB (A): -91.3 - Very good
Dynamic range, dB (A): 91.4 - Very good
THD, %: 0.213 - Poor
THD + Noise, dB (A): -48.1 - Poor
IMD + Noise, %: 0.432 - Poor
Stereo crosstalk, dB: -91.2 - Excellent
IMD at 10 kHz, %: 0.407 - Poor
General performance: Good
Page Index
1. Introduction, Features, and Specifications
2. Bundle, Chipset, BIOS
3. A Closer Look, Board Layout, Test System
4. Benchmark: AIDA64 CPU
5. Benchmark: AIDA64 FPU
6. Benchmark: AIDA64 Memory
7. Benchmark: BAPCo SYSMark 2012
8. Benchmark: PCMark 7
9. Benchmark: 3DMark 11
10. Benchmark: PassMark PerformanceTest 7.0
11. Benchmark: SuperPI 1M, Cinebench R11.5
12. Onboard Sound Frequency Analysis
13. Overclocking and Conclusion
