What is lossless sound quality Part 5
Web-based players are often difficult to bypass SRC restrictions
What is the function of SRC? In a nutshell, it is to first convert all current output sounds from the device to a fixed sample rate, whether CD quality or high quality, etc., and perform pre-processing equal to a rate, so that the sample rate device sound can be decoded at the same time Process audio for a large number of applications and systems. But the problem of SRC is that PC and mobile devices can’t hear the real high-quality sound, and even CD-quality music will sound exhausted. After SRC, even if the music is played losslessly, it will be processed in CD-quality data The external device is equipped with a monitor panel, and you can also see that the sound quality is 24bit 96kHz, but it is processed in SRC 16bit 48kHz (Note: SRC can be set manually in the PC system for sampling).
▲On mobile devices, the app must also have an exclusive mode to not be restricted by SRC
Simply put, because SRC will convert digital audio from various applications and systems before it is decoded by the input audio device, and all sounds will be compressed into the same input signal, regardless of music, sound effects, etc. the movies etc. is boosting, cutting, or the same frequency as the SRC, the above signal processing is a kind of loss, which will eventually make the sound less than the original appearance.
▲ Although KKBOX can bypass the SRC restriction in certain versions of Android system, it will be blocked when an external sound card is connected.
In order to allow PC systems and mobile devices to play the original level of music files, they must be played in Bit-Perfect mode through the audio device’s exclusive mode, but most general-purpose music playback software and web-based music software do not have this feature. . Audio device exclusive mode and Bit-Perfect, respectively, allow the playback software to bypass the SRC mechanism and get the sole right of input from the audio output device, which is equivalent to sound effects in other systems that cannot be produced exclusively by the device. general public explains why there is only music left, and not even YouTube videos.
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▲Although the SRC setting can be fixed to high sound quality, both compressed music and high sound quality music need to be reprocessed, and the sound quality will be damaged
Currently, there are many professional music playback software on PC or music software provided by audio equipment that can play music in exclusive mode. For example, KKBOX has also completed the configuration function of exclusive mode and Bit-Perfect version driver in the latest version for PC. Mobile devices are more embarrassing. In recent versions, Apple and Google allow exclusive and Bit-Perfect playback of built-in audio devices, but it gets complicated when it comes to external audio devices.
