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Manufacturers / Xiaomi

Test report Xiaomi Redmi Note 4X: Android 7 24 bit (report for a pro)



About this report
This is a report for professionals with a suite of tests for line output devices. Alternative version of the report for "dummies" in development.

One product can have multiple reports in different modes and with different a suite of tests.

A suite of tests for the line-out can be used for headphone or speaker output if in this mode it is possible to use the device as a source for connecting an external amplifier or if such a test suite can give more information about the implementation of the DAC in the device.



Test report - general data DAC Xiaomi Redmi Note 4X Android 7 24 bit

Frequency response


Graphics setting view
Frequency band, Hz:
Range, dB:
Type test:

Spectrum of Total Harmonic Distortion (THD)

Spectrum of Jitter


Spectrum of Multytone Distortion



General results
General results Xiaomi Redmi Note 4X Android 7 24 bit
Channel
Center/Summary
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,01, 0,01
Max voltage output at 0 dBFS, VRMS
0,42
Max voltage output at 0 dBFS, dBV
-7,51
Max voltage output at 0 dBFS, dBu
-5,29
Harmonic distortion at 0,0 dBFS @ 1 kHz, dB
-92,7
Total harmonic distortion at 0,0 dBFS @ 1 kHz, %
0,002326
Harmonic distortion at -3,0 dBFS @ 1 kHz, dB
-86,5
Total harmonic distortion at -3,0 dBFS @ 1 kHz, %
0,004708

The table shows the most important technical characteristics Xiaomi Redmi Note 4X Android 7 24 bit

*Center channel headphone is received by averaging the frequency response between the left and right channels



Test conditions


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Type of product :
Mobility :
DAC Test Set :


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Frequency response DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:
Type test:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.


Table
Frequency response Xiaomi Redmi Note 4X Android 7 24 bit
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-0,01, 0,01
-0,01, 0,01

Crosstalk DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Range, dB:
Channel:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.


Table
Crosstalk Xiaomi Redmi Note 4X Android 7 24 bit
Crosstalk at the frequency 100 Hz, dB
-98,0
Crosstalk at the frequency 1000 Hz, dB
-99,5
Crosstalk at the frequency 10000 Hz, dB
-97,5

Crosstalk Phase DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Channel:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

THD vs output voltage of line out Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Channel:
Type test:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.


Table
THD vs output voltage of line out Xiaomi_Redmi Note 4X Android 7 24
Max voltage output at 0 dBFS, VRMS
0,42
Max voltage output at 0 dBFS, dBV
-7,51
Max voltage output at 0 dBFS, dBu
-5,29


Total Harmonic Distortion vs Level (dBFS)DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Channel:
Type test:


Brief information Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Impulse response DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Time, ms:
Channel:


Brief information
During the test, played a pulse with a sampling frequency of 44.1 kHz and the recording is performed with a sampling frequency of 192 kHz / 24-bit

The impulse response can identify the type of digital filter DAC.

it is a translation from the Russian language. The original text of the report in Russian. Suggest alternative translation possible through the forum, feedback or select text and press Ctrl+Enter (anonymously).

Impulse Response Envelope (ETC - Energy Time Curve) DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Time, ms:
Range, dB:
Channel:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Step response DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Time, ms:
Channel:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Aliasing DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Channel:
Type test:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Checking for correctness of reproduction signals depth more than 16-bit from DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Channel:
Type test:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Spectra of high resolution

Noise floor spectrum DAC Xiaomi Redmi Note 4X Android 7 24 bit (High resolution graph)


Graphics setting view
Range, dB:
Channel:
Scale:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Spectrum of Total Harmonic Distortion (THD) DAC Xiaomi Redmi Note 4X Android 7 24 bit (High resolution graph)


Graphics setting view
Range, dB:
Channel:
Level, dBFS:
Scale:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.


Table
Harmonic distortion
Xiaomi_Redmi Note 4X Android 7 24
Harmonic distortion at 0,0 dBFS @ 1 kHz, dB
-92,7
Total harmonic distortion at 0,0 dBFS @ 1 kHz, %
0,002326
Harmonic distortion at -3,0 dBFS @ 1 kHz, dB
-86,5
Total harmonic distortion at -3,0 dBFS @ 1 kHz, %
0,004708




Table
The levels of harmonics when applying signal 1 kHz 0 dBFS
Xiaomi_Redmi Note 4X Android 7 24
Harmonic, number
1
2
3
4
5
6
7
8
9
10
The level of harmonics, dB
0,0
-101,7
-101,1
-122,8
-102,2
-126,6
-109,3
-122,4
-108,8
-136,2
Harmonic, number
11
12
13
14
15
16
17
18
19
20
The level of harmonics, dB
-102,9
-120,6
-103,6
-122,4
-104,3
-121,9
-107,6
-127,1
-98,1
-123,0


The levels of harmonics when applying signal 1 kHz -3 dBFS
Xiaomi_Redmi Note 4X Android 7 24
Harmonic, number
1
2
3
4
5
6
7
8
9
10
The level of harmonics, dB
-3,0
-106,8
-101,0
-131,7
-93,5
-127,6
-101,9
-129,3
-102,6
-141,4
Harmonic, number
11
12
13
14
15
16
17
18
19
20
The level of harmonics, dB
-97,4
-128,8
-102,0
-125,4
-104,4
-132,6
-101,7
-128,5
-100,1
-130,2
The data in the tables correspond to by average value of left and right channels

Spectrum of Dynamic Range (-60 dBFS) DAC Xiaomi Redmi Note 4X Android 7 24 bit (High resolution graph)


Graphics setting view
Range, dB:
Channel:
Scale:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Sine low ammplitude spectrum -90 dBFS DAC Xiaomi Redmi Note 4X Android 7 24 bit (High resolution graph)


Graphics setting view
Range, dB:
Channel:
Scale:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Spectrum of Intermodulation Distortion (IMD) - SMPTE DAC Xiaomi Redmi Note 4X Android 7 24 bit (High resolution graph)


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:
Level, dBFS:
Scale:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Spectrum of Intermodulation Distortion (IMD) - CCIF DAC Xiaomi Redmi Note 4X Android 7 24 bit (High resolution graph)


Graphics setting view
Range, dB:
Channel:
Level, dBFS:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Spectrum of Multytone Distortion DAC Xiaomi Redmi Note 4X Android 7 24 bit (High resolution graph)


Graphics setting view
Range, dB:
Channel:
Level, dBFS:
Type test:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Spectrum of Noise Distortion DAC Xiaomi Redmi Note 4X Android 7 24 bit (High resolution graph)


Graphics setting view
Range, dB:
Channel:
Level, dBFS:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Spectrum of Jitter DAC Xiaomi Redmi Note 4X Android 7 24 bit (High resolution graph)


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:
Type test:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.


Table
The accuracy of the playback speed Xiaomi Redmi Note 4X Android 7 24 bit
Fundamental tone 11025 Hz, Hz
11025,0000
Variance from 11025 Hz, Hz
0,0000

Spectra vs Amplitude

Total Harmonic Distortion vs Level (dBFS) DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Channel:
Level, dBFS:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Spectrum of IMD SMPTE vs Level (dBFS) DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Frequency band, Hz:
Channel:
Level, dBFS:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Spectrum of IMD CCIF vs Level (dBFS) DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Channel:
Level, dBFS:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Spectrum of Multitone Distortion vs Level (dBFS) DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Channel:
Level, dBFS:
Type test:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.

Spectrum of Noise Distortion vs Level (dBFS) DAC Xiaomi Redmi Note 4X Android 7 24 bit


Graphics setting view
Channel:
Level, dBFS:


Brief information
Translation of the description is not yet ready

Original text in Russian report. You can help with translation via the forum or feedback.


Original text in Russian page. Translation page is not yet ready

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