There are a links to detail tests:
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| Frequency response |
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| THD + Noise (at -3 dB FS) |
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| Dynamic range |
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| Intermodulation distortion |
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| Noise level |
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| IMD (swept tones) |
2012-11-12
Samsung GALAXY Ace2 vs LG Optimus L7 audio test comparison
Samsung GALAXY Ace2 vs LG Optimus L7 RMAA audio test comparison.
There are a links to detail tests:
There are a links to detail tests:
LG Optimus L7 audio test
This is an audio RMAA test report of LG Optimus L7 (P705/P700).
Testing chain: Optimus L7 (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : -0.02, -1.68
Noise level, dB (A) : -85.9
Dynamic range, dB (A) : 87.3
THD, % : 0.021
THD + Noise, dB (A) : -67.2
IMD + Noise, % : 0.107
Stereo crosstalk, dB : -84.2
IMD at 10 kHz, % : 0.053
Testing chain: Optimus L7 with 16 Ohm load (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : -0.07, -1.71
Noise level, dB (A) : -85.0
Dynamic range, dB (A) : 86.5
THD, % : 0.036
THD + Noise, dB (A) : -65.1
IMD + Noise, % : 0.114
Stereo crosstalk, dB : -55.8
IMD at 10 kHz, % : 0.085
*)
CORDA ARIETTA preamplifier with crossfeed filter turned off.
 |
| LG Optimus L7 |
Testing chain: Optimus L7 (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : -0.02, -1.68
Noise level, dB (A) : -85.9
Dynamic range, dB (A) : 87.3
THD, % : 0.021
THD + Noise, dB (A) : -67.2
IMD + Noise, % : 0.107
Stereo crosstalk, dB : -84.2
IMD at 10 kHz, % : 0.053
Testing chain: Optimus L7 with 16 Ohm load (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : -0.07, -1.71
Noise level, dB (A) : -85.0
Dynamic range, dB (A) : 86.5
THD, % : 0.036
THD + Noise, dB (A) : -65.1
IMD + Noise, % : 0.114
Stereo crosstalk, dB : -55.8
IMD at 10 kHz, % : 0.085
*)
CORDA ARIETTA preamplifier with crossfeed filter turned off.
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| Frequency response |
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| Noise level |
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| Dynamic range |
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| THD + Noise (at -3 dB FS) |
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| Intermodulation distortion |
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| IMD (swept tones) |
Panasonic SL-MP75 portable CD/MP3 player audio test
This is an audio RMAA test report of Panasonic SL-MP75 portable CD/MP3 player.
This first table presents a results of test of player feeded by wall AC 220V to DC 5V converter.
Testing chain: SL-MP75 (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : +0.43, -0.13
Noise level, dB (A) : -82.3
Dynamic range, dB (A) : 82.5
THD, % : 0.015
THD + Noise, dB (A) : -73.7
IMD + Noise, % : 0.069
Stereo crosstalk, dB : -84.1
IMD at 10 kHz, % : 0.045
Next two tables presents a results of tests of player feeded by batteries.
Testing chain: SL-MP75 (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : +0.49, -0.13
Noise level, dB (A) : -87.1
Dynamic range, dB (A) : 87.1
THD, % : 0.011
THD + Noise, dB (A) : -75.2
IMD + Noise, % : 0.047
Stereo crosstalk, dB : -86.9
IMD at 10 kHz, % : 0.032
Testing chain: SL-MP75 with 16 Ohm load (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : +0.03, -1.55
Noise level, dB (A) : -89.5
Dynamic range, dB (A) : 89.4
THD, % : 0.433
THD + Noise, dB (A) : -45.0
IMD + Noise, % : 1.943
Stereo crosstalk, dB : -78.9
IMD at 10 kHz, % : 0.509
*)
CORDA ARIETTA preamplifier with crossfeed filter turned off.
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| SL-MP75 |
This first table presents a results of test of player feeded by wall AC 220V to DC 5V converter.
Testing chain: SL-MP75 (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : +0.43, -0.13
Noise level, dB (A) : -82.3
Dynamic range, dB (A) : 82.5
THD, % : 0.015
THD + Noise, dB (A) : -73.7
IMD + Noise, % : 0.069
Stereo crosstalk, dB : -84.1
IMD at 10 kHz, % : 0.045
Next two tables presents a results of tests of player feeded by batteries.
Testing chain: SL-MP75 (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : +0.49, -0.13
Noise level, dB (A) : -87.1
Dynamic range, dB (A) : 87.1
THD, % : 0.011
THD + Noise, dB (A) : -75.2
IMD + Noise, % : 0.047
Stereo crosstalk, dB : -86.9
IMD at 10 kHz, % : 0.032
Testing chain: SL-MP75 with 16 Ohm load (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : +0.03, -1.55
Noise level, dB (A) : -89.5
Dynamic range, dB (A) : 89.4
THD, % : 0.433
THD + Noise, dB (A) : -45.0
IMD + Noise, % : 1.943
Stereo crosstalk, dB : -78.9
IMD at 10 kHz, % : 0.509
*)
CORDA ARIETTA preamplifier with crossfeed filter turned off.
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| Frequency response |
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| Noise level |
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| Dynamic range |
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| THD + Noise (at -3 dB FS) |
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| Intermodulation distortion |
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| IMD (swept tones) |
2012-10-08
USB flash drive capacity recovery
After using a Windows Image Writer to make a bootable Chromium OS USB drive (*), my 8 GByte USB flash memory stick has been partitioned to a 2 GByte size.
Go here to recover 8 GByte capacity.
Click Start , type CMD in the search field and press enter key to open the Windows Command window. The default command prompt should be C:\> .
run diskpart
C:\> DISKPART
The prompt changes to reflect the actions done within DISKPART command, DISKPART> .
DISKPART> LIST DISK
This command reports the number 0 represents the hard drive, and the number 1 is assigned to the USB drive in a single HDD PC configuration.
DISKPART> SELECT DISK 1
Disk 1 is now the selected disk.
(Replace the number 1 with the variable assigned for your USB drive in the previous command.)
DISKPART> CLEAN
DiskPart succeeded in cleaning the disk.
DISKPART> CREATE PARTITION PRIMARY
DiskPart succeeded in creating the specified partition.
DISKPART> EXIT
Voilà. Next make format by usual way...
*) How To Turn Your Netbook Into a Chromebook with Chromium OS - http://lifehacker.com/5820358/how-to-turn-your-netbook-into-a-chromebook-with-chromium-os
run diskpart
C:\> DISKPART
The prompt changes to reflect the actions done within DISKPART command, DISKPART> .
DISKPART> LIST DISK
This command reports the number 0 represents the hard drive, and the number 1 is assigned to the USB drive in a single HDD PC configuration.
DISKPART> SELECT DISK 1
Disk 1 is now the selected disk.
(Replace the number 1 with the variable assigned for your USB drive in the previous command.)
DISKPART> CLEAN
DiskPart succeeded in cleaning the disk.
DISKPART> CREATE PARTITION PRIMARY
DiskPart succeeded in creating the specified partition.
DISKPART> EXIT
Voilà. Next make format by usual way...
*) How To Turn Your Netbook Into a Chromebook with Chromium OS - http://lifehacker.com/5820358/how-to-turn-your-netbook-into-a-chromebook-with-chromium-os
2012-09-21
Samsung GALAXY Ace2 audio test
Android smartphone Samsung GALAXY Ace2 (GT-I8160) audio RMAA test report.
Testing chain: Ace2 (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : -0.09, -0.24
Noise level, dB (A) : -90.1
Dynamic range, dB (A) : 89.2
THD, % : 0.011
THD + Noise, dB (A) : -75.5
IMD + Noise, % : 0.018
Stereo crosstalk, dB : -88.7
IMD at 10 kHz, % : 0.021
Testing chain: Ace2 with 16 Ohm load (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : -0.05, -0.22
Noise level, dB (A) : -87.4
Dynamic range, dB (A) : 86.5
THD, % : 0.021
THD + Noise, dB (A) : -70.4
IMD + Noise, % : 0.023
Stereo crosstalk, dB : -61.8
IMD at 10 kHz, % : 0.054
*)
CORDA ARIETTA preamplifier with crossfeed filter turned off.
Testing chain: Ace2 (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : -0.09, -0.24
Noise level, dB (A) : -90.1
Dynamic range, dB (A) : 89.2
THD, % : 0.011
THD + Noise, dB (A) : -75.5
IMD + Noise, % : 0.018
Stereo crosstalk, dB : -88.7
IMD at 10 kHz, % : 0.021
Testing chain: Ace2 with 16 Ohm load (16-bit, 44.1 kHz WAV file playback) -> CORDA ARIETTA -> Creative Sound Blaster Digital Music Premium HD line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : -0.05, -0.22
Noise level, dB (A) : -87.4
Dynamic range, dB (A) : 86.5
THD, % : 0.021
THD + Noise, dB (A) : -70.4
IMD + Noise, % : 0.023
Stereo crosstalk, dB : -61.8
IMD at 10 kHz, % : 0.054
*)
CORDA ARIETTA preamplifier with crossfeed filter turned off.
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| Frequency response |
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| Noise level |
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| Dynamic range |
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| THD + Noise (at -3 dB FS) |
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| Intermodulation distortion |
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| IMD (swept tones) |
2012-08-29
Crossfeed digital processing
There is a list of crossfeeding software for headphone listening:
- Bauer stereophonic-to-binaural DSP by Boris Mikhaylov http://bs2b.sourceforge.net/
- TB IsoneSurround by ToneBoosters http://www.toneboosters.com/tb-isonesurround/
- foo_dsp_xfeed, Crossfeed by xnor http://www.hydrogenaudio.org/forums/index.php?showtopic=90764
- HeadPlug by Paul Groke http://www.stereo-balance.net/index.php?mod=wiki&w=headplug
- Crossfeed by naive software http://www.naivesoftware.com/software.html
...
2012-08-21
ALC892 RMAA test report
RMAA test report of Realtek High Definition Audio (ALC892) @ Asus P8H67-M PC motherboard.
Testing chain: ALC892 line-out (24-bit, 48 kHz) -> SBLive!24 line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : +0.02, -0.14
Noise level, dB (A) : -94.1
Dynamic range, dB (A) : 94.1
THD, % : 0.0037
THD + Noise, dB (A) : -79.4
IMD + Noise, % : 0.012
Stereo crosstalk, dB : -91.2
IMD at 10 kHz, % : 0.0095
Testing chain: ALC892 line-out (24-bit, 48 kHz) -> SBLive!24 line-in (24-bit, 48 kHz).
Frequency response (from 40 Hz to 15 kHz), dB : +0.02, -0.14
Noise level, dB (A) : -94.1
Dynamic range, dB (A) : 94.1
THD, % : 0.0037
THD + Noise, dB (A) : -79.4
IMD + Noise, % : 0.012
Stereo crosstalk, dB : -91.2
IMD at 10 kHz, % : 0.0095
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| Frequency response |
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| Noise level |
 |
| Dynamic range |
 |
| THD + Noise (at -3 dB FS) |
 |
| Intermodulation distortion |
 |
| Stereo crosstalk |
 |
| IMD (swept tones) |