Why is my 5.1 or 7.1 surround sound not working from the digital (S/PDIF) output? - StarTech.com IT Pro Community
<main> <article class="userContent"> <p>The audio format of your source media may be uncompressed (lossless). Uncompressed surround sound audio is not supported by digital (S/PDIF) connections due to bandwidth limitations. When your lossless 5.1 or 7.1 audio content is sent through the Digital S/PDIF connection, data will be lost which can result in limited 2-channel audio playback.</p><p>This issue is not an isolated limitation of this StarTech.com audio adapter, as uncompressed surround sound is universally incompatible with digital (S/PDIF) audio.</p><p><strong>Digital (S/PDIF) audio supports:</strong></p><ul><li>2-channel PCM audio</li><li>Compressed surround sound audio (Dolby Digital, DD+, DTS, DTS-ES)</li></ul><p><strong>Digital (S/PDIF) audio does NOT support:</strong></p><ul><li>More than 2-channels of PCM audio</li><li>Uncompressed surround sound audio (DD-TrueHD, DTS-Master Audio)</li></ul><p>Playback of digital surround sound is dependent on a variety of factors, including the audio format of your source media, your playback software, and your audio receiver. Digital (S/PDIF) channel settings are managed by the source and playback devices, and cannot be manually configured like analog audio.</p><p><br></p><div class="blockquote"><div class="blockquote-content"><p class="blockquote-line">This FAQ applies to these products:</p><p class="blockquote-line"><a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fcards-adapters%2Ficusbaudio2d" rel="nofollow noreferrer ugc">ICUSBAUDIO2D</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fcards-adapters%2Ficusbaudio7d" rel="nofollow noreferrer ugc">ICUSBAUDIO7D</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fcards-adapters%2Ficusbaudiomh" rel="nofollow noreferrer ugc">ICUSBAUDIOMH</a> <a href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.startech.com%2Fen-us%2Fcards-adapters%2Fpexsound7ch" rel="nofollow noreferrer ugc">PEXSOUND7CH</a></p></div></div><p><br></p> </article> </main>
