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・ Portable media player
・ Portable Modular Data Center
・ Portable Network Graphics
・ Portable Nitrogen Fixation Package
・ Portable object (computing)
・ Portable Object Adapter
・ Portable operation (amateur radio)
・ Portable Optical Air Sensor
・ Portable oxygen concentrator
・ Portable partitions
・ Portable People Meter
・ Portable roller coaster
・ Portable Sanitation Association International
・ Portable sawmill
・ Portable shrine
Portable Sound Format
・ Portable Sounds
・ Portable soup
・ Portable Standard Lisp
・ Portable stereo
・ Portable storage device
・ Portable stove
・ Portable subfloors
・ Portable Surgical Hospital
・ Portable telemetry
・ Portable Theatre Company
・ Portable toilet
・ Portable ultrasound
・ Portable water purification
・ Portable water tank


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Portable Sound Format : ウィキペディア英語版
Portable Sound Format

The Portable Sound Format (PSF) is a sound file format ripped directly from video games from a variety of game consoles. The format was originally used for Sony PlayStation video games, but has since been adapted to support other systems.
The PSF format was created by Neill Corlett in 2003, who also wrote the Winamp plugin ''Highly Experimental'' that plays PSF1 and PSF2 files.
Generally, PSF files contain a number of samples and a sequence player program. This takes far less space than an equivalent streamed format of the same music (WAV, MP3) while still sounding exactly like the original track. Background music stored in PSF files can usually be looped forever, as the sequencer handles its own loop points.
Several PSF subformats also have a ''miniPSF/PSFlib'' capability, wherein data used by multiple tracks is stored only once in an accompanying ''PSFlib'' file. Further differences are stored in a ''miniPSF'' file, which can be zlib compressed to further increasing storage efficiency.
A PSF2 file is the PlayStation 2 equivalent of a PSF. PSF2 is internally structured as a file system, rather than PSF, which is a single PS executable. PSF's native sample rate is 44,100 Hz, while PSF2's is 48,000 Hz. Rates may vary from 8,000 Hz to 96,000 Hz.
Both PSF and PSF2 files contain a header which specifies the type of video game system the file contains data for, and an optional set of tags at the end which can give detailed information such as game name, artist and length.
== PSF subformats ==

PSF initially stood only for "''PlayStation Sound Format''", but with the addition of the PSF2, SSF (Sega Saturn Sound Format), DSF (Dreamcast Sound Format), USF (Nintendo Ultra 64 Sound Format), QSF (Capcom Q-Sound Format), GSF (Game Boy Advance Sound Format), and 2SF (Nintendo DS Sound Format) subformats, the more generic backronym "Portable Sound Format" was developed. As a result, PSF and PSF1 interchangeably refer to PlayStation sound data files.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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