Editor's note: If you've ever used different smart phones (especially iPhone and Android) to listen to music or play games, you may notice that the sound quality and loudness of the two is different. Does the difference have simple rules or characteristics to follow? This research aims to understand and share the design skills and strategies of audio of mobile games by testing the loudness and frequencies response on popular smart phones. Follow the audio journey with us and explore the mystery of sound on smart phones.
Author: Yang Jie, Senior Audio Designer of NExT Studios. He has been engaged in game audio design for more than 20 years and has extensive experience in various types of game audio design.
We always say different model of mobile sounds different. I'm working on mobile games for couple years. But never tried how they are different. And eventually, I got time to have the test:
1st of all, the "popular" mobiles are different in different places. The models I collected is almost the most recently popular devices in China. It won't tell you anything because of the hardware problem. But we can see the phenomenon some tricks from the test. The mobile phones for the test:
Also on the game side, different type of game sounds very different loudness because of the game play modes. So I collected 7 different mobile games and they are different game types. And they are very popular in Chinese mobile game market now. They are:
(I actually tested 2 different versions of PUBG mobile by Tencent. Just for fun!)
The Testing Method
About the Speaker Box in mobile devices
This is a research subject. It supposes to:
The Loudness of speakers output, with White Noise
Reference: 30cm. -12LKFS white noise on iPhone 7P with -12LKFS target recording level.
Any source louder than -16LKFS is meaningless and helpless even it's in short term. Only sharper sound can get louder perception sometime. But sharper sound means rude, hearing hurt and less patient.。
More charts for reference:
The frequencies response on popular smart phones
The frequencies response on smart phones are really hard to simply explain it clearly by one article. And for lot of sound guys even it's probably not easy to read the spectrum properly. So, I think the PDF might be the better way that you can carefully read it in your free time.
Here as the introduction, I prefer to simply paste the conclusion for your reference:
In the 30 pages PDF, there are lot of details you can observe from the spectrums. I guess you can find more trick from the spectrums. Those spectrums can answer lot of questions like: does iPhone sounds better and why? And does Huawei phone sounds exploded? And what we can do for better sound balance to mobile games? ….
All the information above is just for your reference. Hopefully it can help.
Appreciate for the support from the audio team of NExT Studios.
Have fun ❤❤
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