EDIT: after purchasing a new audio interface to replace my older M-Audio device that dies, I am no longer getting the results posted below. The frequency response I'm getting with the One X is now nearly identical to what GSMArena measured for the One S, which was excellent.
Please see my later post with a new graph.
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I've posted this on XDA but decided to post here as well.
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For those of you who are interested, I used RMAA and my M-Audio Firewire 410 audio interface to record and analyze the following:
- Samsung Nexus S with Voodoo Sound
- HTC One X LTE with sound processing off
- HTC One X LTE with Beats audio on (headphone set to Other)
I used supercurio's new app that plays a RMAA test signal to do this. Also, I repeated each test twice to verify that my results were accurate.
Note that on the One X, the output level doesn't go beyond -10dB when volume is at maximum, so I adjusted the Nexus S to -10 dB, even though it can go higher.
I have no idea if my methodology is sound, but I'd say the frequency response speaks for itself.
[size=11pt] [/size]
[size=10pt] Test [/size] | [size=10pt] Samsung Nexus S (Voodoo) [/size] | [size=10pt] HTC One X LTE [/size] | [size=10pt] HTC One X LTE (Beats) [/size] |
[size=10pt] Frequency response (from 40 Hz to 15 kHz), dB: [/size] | [size=10pt] +0.01, -0.12 [/size] | [size=10pt] +1.17, -1.68 [/size] | [size=10pt] +3.32, -1.20 [/size] |
[size=10pt] Noise level, dB (A): [/size] | [size=10pt] -92.6 [/size] | [size=10pt] -93.6 [/size] | [size=10pt] -90.7 [/size] |
[size=10pt] Dynamic range, dB (A): [/size] | [size=10pt] 88.1 [/size] | [size=10pt] 88.9 [/size] | [size=10pt] 90.7 [/size] |
[size=10pt] THD, %: [/size] | [size=10pt] 0.562 [/size] | [size=10pt] 2.092 [/size] | [size=10pt] 3.140 [/size] |
[size=10pt] IMD + Noise, %: [/size] | [size=10pt] 100.000 [/size] | [size=10pt] 100.000 [/size] | [size=10pt] 100.000 [/size] |
[size=10pt] Stereo crosstalk, dB: [/size] | [size=10pt] -87.5 [/size] | [size=10pt] -89.4 [/size] | [size=10pt] -87.1 [/size] |