What it does is take the burden off your iPhone's or other Apple device's likely weak sound card and performs all of the audio processing itself. Why Is a DAC Is Needed for High-Res Lossless Audio?Ī DAC, or digital-to-analog converter, is simply an audio processor. Once you reach Hi-Res territory, a simple iPhone and headphones setup simply won't cut it. But not all lossless is equal, and there's an even better way to listen to Apple Music on your iPhone.Īpple includes a "Hi-Res" lossless option for Apple Music that bumps the file sizes up to 24 bit at 192 kHz. So long as your "Audio Quality" settings are correct when you boot up iOS 14.6's enhanced Apple Music service on your iPhone, you can start listening to more than 75 million songs in Lossless Audio right away using your wired or wireless headphones. This lossless compression starts at CD quality, which has a bit depth and sample rate of 16 bit at 44.1 kHz (kilohertz), and can reach as high as 24 bit at 48 kHz. ALAC has been around since 2004 but is only just hitting the Apple Music streaming service. What Are Apple's Lossless Formats?Īpple Music's Lossless Audio uses Apple's ALAC (Apple Lossless Audio Codec) to preserve the fidelity of the original data. With Apple's lossless format, files take up about half as much space as the raw uncompressed data would but are generally much larger than their lossy counterparts. The idea is to provide a listening experience that matches the master recording file so that you can hear the same sounds that the artist and producers intended in the studio. Most of us never know this data is missing due to lossy compression, but the better quality your equipment is, the more noticeable the compression.Īs its name implies, Lossless refers to music files that don't lose any important information during compression. These files are compressed, which removes some of the less-critical binary data from the music, such as less audible sounds that may have no immediately obvious effect on the song's fidelity. Traditionally, digital music has prioritized file size over quality because storage space and streaming data used to be more limited. These binary numbers carry the information needed to play each song, which your audio processor decodes to play the tunes you hear in your headphones. Don't Miss: 7 Cool Features iOS 14.5 Adds to Your iPhone's Music App - For Apple Music & Your Own Libraryĭigital music, like all digital files, is made up of a large collection of ones and zeros.We'll dive into what lossless even means, what a DAC is, why you need one, and which DACs might work best for your particular setup. While the extra high-definition audio comes at no extra charge, it does require buying a DAC, which isn't necessarily cheap. Hi-Resolution Lossless is included alongside the normal Lossless Audio playback and Spacial Audio features that Apple brings to Apple Music. Still, in the fine print, Apple noted that you wouldn't be able to listen to the best sound quality - Hi-Resolution Lossless - on your iPhone without a DAC. The long-awaited option will let users stream songs at a much higher quality than ever before. On May 17, Apple announced that Lossless Audio playback for Apple Music was finally coming to subscribers in June.
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