What is lossless sound quality Part 4
However, there are many early music recordings that also provide high-quality files in the process of being digitized, but in theory there is no such thing as high-quality digital radio at the time this record was released. How did these files come about?
Broadly speaking, early digital mastering music can be divided into analog mastering and CD-level digital mastering with upscaling; Since the waveform of the analog audio signal can present a real smooth curve, it can be achieved through suitable analog digital conversion equipment. Achieve the information density of the high-resolution level, but after all, we have to consider the high and low frequency limit of the radio equipment in the recording era, so the expressive power of high and low frequency is not necessarily better than modern recording.
As for the expansion of CD-level master tapes, most of them will be marked Remaster. This type of file is presented by combining CD-level sound quality files through post-production upscaling and mixing technology. However, the effects of the Remaster files in different periods appear different, but also affected by the personal preferences of the sound engineer who carried out the Remaster project. Some players think that after the Remaster, although the amount of musical information is gets bigger, at the same time, the musicality can be worse than the original CD.
The innate limitations of listening to music through mobile phones and computers and the high-quality sound you hear may not be the high-quality sound you think.
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▲Perhaps many people do not know that even if a 32-bit sound card is installed, the actual listening format is due to the SRC card in CD quality.
Coming back to music playback itself, the current mainstream of digital music playback has shifted from traditional players to PC platforms and smart mobile devices, but some people may be confused as to why music performance seems strange. heard on a computer or mobile phone. At the same time, people who are fairly confident in their hearing and can tell a CD from high-quality music on a stand-alone player have difficulty telling the difference in CD quality when listening to high-quality content on a computer.
▲To bypass SRC, you need to use playback software and sound driver mode that supports exclusive mode, but most music playback software does not have this function
The reason for the limited listening experience on mobile devices and PC platforms is that these devices are embedded systems, and the audio output on the device is shared with multiple applications, including the system itself, the browser, and each separate application. time, these sounds are often sent synchronously, so modern operating systems will provide an audio device sharing mode called SRC for audio, in order to prevent the audio chip from inserting different audio formats and not can be decoded.
