DTSHD

DTSHD refers to the DTS-HD family of high-definition audio codecs developed by DTS, Inc. It is used to deliver high-quality multichannel audio on Blu-ray discs, streaming services, and various HD video devices. The term typically covers two main formats: DTS-HD Master Audio (DTS-HD MA), a lossless codec, and DTS-HD High Resolution (DTS-HD HR), a high-bitrate lossy option. DTSHD is designed to preserve audio fidelity while supporting multiple channels and high sample rates.

DTS-HD Master Audio provides bit-for-bit reproduction of the original sound when properly decoded. It supports up to 7.1 channels and high sample rates, commonly up to 192 kHz in practice. Many DTS-HD MA streams include a backward-compatible DTS Core, allowing older decoders to render a usable audio track even if they cannot reproduce the full lossless stream. DTS-HD High Resolution is a perceptually coded, lossy variant that aims for high fidelity at lower bandwidth than the lossless MA, enabling efficient delivery in environments with bandwidth or storage constraints. Both formats are designed for use on Blu-ray discs and are supported by a wide range of Blu-ray players, AV receivers, and compatible software and hardware.

DTS-HD is part of a broader landscape of DTS technologies, including object-based formats like DTS:X, which are distinct from the DTS-HD MA and DTS-HD HR line. The DTSHD branding emphasizes high-definition audio and backward compatibility with legacy DTS formats on media that combines multiple audio tracks.