High Fidelity Pure Audio
Digital audio medium
From Wikipedia, the free encyclopedia
High Fidelity Pure Audio, occasionally abbreviated as HFPA or BD-A, is a marketing initiative, spearheaded by Sony Music and Universal Music Group, for audio-only Blu-ray optical discs.[2] Launched in 2013[3] as a potential successor to the compact disc (CD), it has been compared with DVD-Audio and SACD, which had similar aims.[4][2]
H.264/MPEG-4 AVC
Audio 2.0 or 5.1 Surround
Dolby TrueHD
DTS-HD Master Audio
LPCM[1]
50 GB (dual-layer)
HFPA Blu-ray logo | |
| Media type | Blu-ray |
|---|---|
| Encoding | Menu screen H.264/MPEG-4 AVC Audio 2.0 or 5.1 Surround Dolby TrueHD DTS-HD Master Audio LPCM[1] |
| Capacity | 25 GB (single-layer) 50 GB (dual-layer) |
| Read mechanism | 405 nm diode laser |
| Developed by | Sony Pictures Entertainment, Sony Music Entertainment, Universal Pictures, Universal Music |
HFPA is encoded as 24-bit/96 kHz or 24-bit/192 kHz linear PCM ("high-resolution audio"), optionally losslessly compressed with Dolby TrueHD or DTS-HD Master Audio.[1]
HFPA discs are compatible with existing Blu-ray players.[5]
Pure Audio Blu-ray refers to a different initiative (but with some goals in common) launched by msm-studios in Germany in 2009.[4]
As of November 2019, Deutsche Grammophon is the most prolific publisher on the format, with Beethoven 250 having three Blu-ray audio discs.
