OnePlus 5 Review: Call Quality
Author:Soomal
Source:eng.soomal.com

Rate:00.00/0
‘€
‘€

OnePlus 5 is OPPOish in appearance, but keeps its high-performance with affordable price. It comes with Qualcomm Snapdragon 835 processor, 6/8GB RAM for just $479/539. As usual, we are also concerning about the call quality of it.

Now, we have two versions of Qualcomm SD835 on sell, one's CODED is WCD9335, and another is WCD9341. From the teardowns on the internet, we found that the CODED of OnePlus 5 is still WCD9335, not the better WCD9341. It is rear for a China branded smartphone supporting all main wireless band around the world, but OnePlus 5 supports. H2OS is almost just a native Android 7, so the call interface is Google styled, but the call ID data comes from China native providers. We can also find a switch for noise reduction on/off, but it seems just a placebo. As usual, we place this cell phone indoor with normal signal, and set the call voice volume to maximum, then call 10010 [GSM], which is China Unicom customer service hotline, and 10086 [VoLTE], which is China Mobile customer service hotline. And we use WeChat, the most popular tool in china, as VoIP. Then use professional sound card and microphone for recording and analysis.

Earpiece Speaker Test

‘€

We place this cell phone indoor with normal signal, and set the call voice volume to maximum, then call 10010 [GSM], which is China Unicom customer service hotline. Then use professional sound card and microphone for recording and analysis.

Testing Item OnePlus 5 OPPO R11 Nubia Z17 HTC U11 Galaxy S8+ iPhone 7 Plus
Output Level of Earpiece,dB -9.54 -9.51 -9.89 -10.18 -10.2/-9.98 -8.06

OnePlus 5's earpiece volume is similar to that of R11, but the sound style is a little different, for OnePlus 5 has a tighter voice mids.

Loud Speaker Test

Speaker test was undertaken indoors with ambient noise level at 40dB or less, we turn up the ringtone volume to its maximum, and then use a sound level meter to measure sound level at the distance of one meter from the phone.

Testing Item OnePlus 5 OPPO R11 Nubia Z17 HTC U11 Galaxy S8+ iPhone 7 Plus
Face Up,dB 79.9 75.5 75.8 75.6 73.4 78.9
Face Down,dB 77.4 75.8 75.7 74.8 73.7 79.8
In Camera Bag,dB 75.5 69.4 74.7 75.6 69.1 73.3

OnePlus 5 makes great progress in loud speaker. Its volume and dynamic performance is better than most China branded smartphones, similar to iPhone 7P.

Noise Reduction Test

We place this phone indoors with ambient noise level at 32db or less, in the middle of the room, we use a human-like structure "handholding" the phone to send voice signal, and put surround speakers in a certain distance playing 5 kinds of simulating ambient noise at 6db SNR. Then we standardize the recording from this end, and run a specific program comparing this recording with raw speech recording and noise-speech mixed recording to get noise reduction level, SNR improvement and SNRI-to-NPLR difference quantitative result.

Testing Item[Hand Holding] Noisy Crowd Background Music Pink Noise Roadside Voice
Total Noise Level Reduction,dB[Higher is Better] 45.8 40.5 47.5 46.3 35.0
SNR Improvement,dB[Higher is Better] 35.7 29.0 38.1 35.5 23.3
SNRI-to-NPLR difference,dB[-4 to 3] -3.1 -1.0 -4.5 -4.1 0.6
Testing Item[Hand Free] Noisy Crowd Background Music Pink Noise Roadside Voice
Total Noise Level Reduction,dB[Higher is Better] 26.4 29.0 27.2 30.1 26.9
SNR Improvement,dB[Higher is Better] 21.0 25.3 19.9 23.0 19.2
SNRI-to-NPLR difference,dB[-4 to 3] -1.7 0.2 -3.4 -2.9 1.5
Testing Item[VoIP] Noisy Crowd Background Music Pink Noise Roadside Voice
Total Noise Level Reduction,dB[Higher is Better] 43.3 41.6 45.9 46.9 38.7
SNR Improvement,dB[Higher is Better] 29.1 33.2 33.0 34.4 31.9
SNRI-to-NPLR difference,dB[-4 to 3] -4.4 -2.2 -7.1 -6.0 0.6
  • Total Noise Level Reduction, TNLR: Total Noise Level Reduction illustrates the reduction of ambient noise level. The average level is above 5dB. Theoretically, higher TNLR would be better, but an over high result may be caused by severe attenuation of voice signal, or interruption caused by poor phone signal or noise reduction algorithm flaw.
    Signal-to-Noise Ratio Improvement, SNRI: capability of an NS method to enhance the speech component of a noisy speech signal from an additive background noise. SNR improves after noise reduction by comparing noise-reduced and raw voice signal. Generally, the improvement is over 4dB.
    SNRI-to-NPLR difference, DSN: the signal level difference between raw and noise-reduced. Noise reduction process would attenuate voice signal level, cell phones would gain signal to ensure the call quality. Theoretically, it would be best that signal level remain the same before and after noise reduction. A standard signal level peak is -2.5dB. If the signal was gained too high, overflow would happen, and that means frequent crackle, too low, voice signal strength would not be enough, and that means the sound would be too low, and the other end would not hear clearly.
    The result is just a test reference under similiar circumstances or conditions, third-party websites or official technical data cannot be used for comparison.

OnePlus 5 has an excellent noise reduction performance in hand-holding mode, except voice, it is able to filter any kinds of certain volume ambient noise. It also keeps most voice signals in hand-free mode. However, its VoIP performance is inferior to former ones. It recording voice large enough, not significant impact VoIP sound quality. In general, OnePlus 5 has a better call quality and noise reduction than OnePlus 3, and the loud speaker has higher volume and wider dynamic.

Please Rate 1 2 3 4 5 6 7 8 9 10
Soomal.com