Hi-Res Audio Files
Audio files 192 kHz / 24 bit, 176/24, 96/24, 9624, 24 bit / 96 kHz, 24/96, FLAC96, 192WAV, etc.
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Lossless or uncompressed compressed digital files to accurately store and reproduce pulse code modulation (PCM) digitized sound. Audio files are generally considered High Definition (BP) files if they have a sample rate of 88.2 or 176.4 kHz (multiples of 44.1 kHz), 96 or 192 kHz (multiples of 48 kHz) or higher and 24 bits or higher.
For accurate sound reproduction, files must be in lossless formats. The most commonly used formats (codecs) are WAV, FLAC, WMA, AIFF and ALAC. WAV (Waveform Audio Format) is a format commonly used as a wrapper for uncompressed audio digitized using PCM. FLAC (Free Lossless Audio Codec – open lossless audio codec) is a popular audio compression format that does not remove any information from the audio stream and is suitable for both listening to music on high-quality audio equipment and for storing a collection audio on a hard drive. WMA (Windows Media Audio) is a compressed format developed by Microsoft (UNITED STATES). For accurate sound reproduction, the Lossless version is preferred. AIFF (Audio Interchange File Format) was developed by Apple Computer (USA) in two versions: with and without compression, and is most often used on Apple computers. ALAC (Apple Lossless Audio Codec) is an open source lossless audio codec also developed by Apple. There are also other formats for storing and playing audio files.
Audio files can be exact (“bitwise”) copies of studio master files, their variants with different sample rates and bit depths, or digital files obtained by digitizing analog audio recordings.
To put audio files on the hard drive of a computer or music server, you can download them from the Internet, transfer them from another PC, flash drive, or optical disc. An example of the latter is HRx discs
DXD (Digital eXtreme Definition) is a BP format that was initially used only for professional sound recording. The DXD format uses PCM to digitally encode audio data with a sample rate of 352.8 kHz and 24 or 32 bits. The DXD format was developed in 2004 by Digital Audio Denmark (Denmark) and was originally used to record and process sound in the production of super-audio discs.
However, it later began to be used as a standalone digital audio recording format. Since 2012, DXD music files are distributed on the Internet. The release of consumer DACs that support this format is expanding.
In addition to the aforementioned formats, in which the signal was digitized using PCM, since 2010 DSD audio files have been distributed on the Internet, in which another technology was used for encoding: Direct Stream Digital (direct digital stream), based on sigma-delta modulation. This is the same technology that is used in SACDs (see below). DSD audio files have the extension DFF or DSF.
Encoding with different sampling rates is used: 2.8224 MHz, such as SACD (often referred to as DSD64, as this frequency is 64 times higher than CD, or single DSD, DSD1), with a frequency twice as high high: 5.6448 MHz (designated DSD128, 2xDSD, DSD2, 5.6MHz DSD or Double-DSD), four times higher: 11.2896 MHz (DSD256, 4xDSD, DSD4, 11.2MHz DSD or Quad-DSD) and even eight times higher higher than 22.5792 MHz (DSD512, 8xDSD, DSD8, 22.5MHz DSD or Octuple-DSD). There are also DSD files in multiples of 48 kHz – 3.072 / 6.144 / 12.288 / 24.576 MHz.
With the appropriate software and DAC, DSD audio files can be played from a computer in their native format, or they can be converted to PCM files for playback using non-DSD digital-to-analog converters.
MQA is a compression technology proposed in December 2014 by the British company Meridian Audio, which previously developed the MLP method for DVD audio discs (see below). MQA (Master Quality Authenticated, Russia Confirmed Studio Quality) technology is based on the use of a special codec that allows you to significantly reduce (by an order of magnitude) the size of a digital audio file to simplify its transmission and storage , and then decode without degrading sound quality, according to the company. …
