The Lumia 920 uses the new Windows Phone 8 system, so will its sound quality improve? We also learned a little about the WP8's audio architecture and found that its architecture is based on the desktop system. This architecture has the potential to produce high-quality [including high-quality and low-latency] audio experiences. Nokia Nokia Lumia 800 smartphone Nokia Nokia Lumia 710 Smartphone Previously, we tested several WP7 phones, including the Lumia800/710 and LG E900. Their sound quality was not good, and the roots were not in the audio architecture of WP7 but in hardware. So far, all WP7 and WP8 phones are based on the Qualcomm chipset, and the inferior SRC of the Qualcomm chipset's audio subsystem is the culprit. However, the situation seems to have changed. When we tested Xiaomi 2, we found that the latest Qualcomm Snapdragon 4 chipset may be able to bypass the SRC. Although the chipset used in the Lumia 920 is different from the Xiaomi 2, it is also affiliated with Snapdragon 4. Will there be a miracle happening? E-MU 1616M PCIe Digital Audio System In accordance with established practice, we conduct a set of objective tests on the headphone output of the Lumia 920. The test is also in the form of a professional-grade sound card input, combined with common analysis methods to provide intuitive measurement results. The test found that the maximum output level of the Lumia 920 was -13 dB, which was compensated at the recording end during the test. At the beginning of the test, we found a speechless problem. The integrated player of WP8 inherits the shortcomings of WP7. It still does not support the Wave format (in fact, WP can support WAV natively), so the test can only use WMA lossless and MP3 with 320kbps code rate. WMA lossless does not support 48kHz, so the 48kHz sampling rate can only be done with MP3, so the result will be worse than the theoretical best, some distortion is brought by MP3. Nokia Nokia Lumia 920 Smartphone - Frequency Response Curve Nokia Nokia Lumia 920 Smartphone - Total Harmonic Distortion Nokia Nokia Lumia 920 Smartphone - Intermodulation Distortion Looking at the RMAA test results, the results seem to be ideal. Nokia Nokia Lumia 920 Smartphone - Frequency Scan Test Nokia Nokia Lumia 920 Smartphone - Frequency Scan Test @48kHz Nokia Nokia Lumia 920 Smartphone - Separation Test Nokia Nokia Lumia 920 Smartphone - Resolution Frequency Analysis Spectral testing can see more problems. When the 44.1kHz frequency is scanned, a typical "high-pass texture" appears. The reader who reads Soomal for a long time should not be unfamiliar. That is to say, at 44.1kHz, the SRC link of the Qualcomm chipset is breaking the sound quality. However, there is no common fishnet pattern spectrum on the Android platform at 48 kHz, indicating that the Lumia 920 does not have much problems in video and game applications (the audio of this type of application is mainly 48 kHz). Nokia Nokia Lumia 920 smartphone - random pops in single loop mode The test process was not smooth, because we encountered a very rare problem, Lumia920 in the single loop mode, the second time will start to generate random pops, which is obviously a problem with the relevant code of the player buffer (Buffer). We also found the Lumia 710 based on WP7.5, there is no such low-level error. Lumia 920's actual performance is not good, we do not describe in detail, a brief summary. The thrust is insufficient, the neutral is cold, and the sense of hearing is thin, which is quite different from the iPhone. In the smart phone, it can only be in the middle, and it is equivalent to most Qualcomm models, without any features. The Lumia 920 test did not surprise, and found a low-level error. This is somewhat regrettable, and a perfect audio architecture does not make a satisfactory audio experience, which makes no difference with the use of mahogany to build a straw shed. The cooperation between Qualcomm, Nokia and Microsoft is obviously not in place. I hope that you will work hard. brand vape pen, famous disposable vape brand, smok Shenzhen Xcool Vapor Technology Co.,Ltd , http://www.xcoolvapor.com
Nokia Nokia Lumia920 smartphone 
Test items 44.1kHz 44.1kHz@MP3 48kHz@MP3 Noise level, dB (A): -92.5 -93.2 -93.7 Dynamic range, dB (A): 91.6 91.7 91.4 Total harmonic distortion, %: 0.0092 0.0092 0.0033 Intermodulation distortion, %: 0.017 0.013 0.011 Stereo resolution, dB: -93.2 -93.0 -92.9 
