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Storage medium
Sony Hi-MD back.jpg
Sony Hi-MD Disc (rear)
Type Magneto-optical storage medium
capacity 1 GB
developer Sony
Launch 2004
predecessor MiniDisc
Sony Hi-MD recorder Walkman MZ-NH1

Hi-MD is a data and audio storage medium and was introduced as the successor to the MD ( MiniDisc ), whose devices were sold from November 1992. The Hi-MD was introduced in July 2004 and offers 1  gigabyte of storage space. Sony was the only manufacturer of Hi-MD media, Hi-MD devices were offered by Sony and Onkyo in Germany . In Japan, Onkyo continues to offer stationary decks. Otherwise no continuation of this format was planned.

Audio data is saved on the disc with data reduction in the audio data compression format ATRAC3 or the newer ATRAC3plus . Your own recordings in PCM format are also possible. With a bit rate of 48 kbit / s, up to 45 hours of music can be stored on the storage medium. With the option of connecting (stereo) microphones and controlling the recordings manually, Hi-MD walkmen are currently a practicable and affordable solution for mobile audio recording in high quality.

Hi-MD devices can be connected to the PC . In addition to the possibility of using minidiscs as conventional removable media, the relevant software (SonicStage, HiMDRenderer, QHiMDTransfer) can be used to transfer self-made recordings to the computer for further processing (audio editing).

Hi-MD devices support the following bit rates:

Bit rate and
max. Recording time per Hi-MD medium
01.4 kMbit / s (PCM) 01 hour 34 min
,352 M.kbit / s (ATRAC3plus) 05 hours 30 minutes
,256 M.kbit / s (ATRAC3plus) ("Hi-SP") 07 hours 55 minutes
,192 M.kbit / s (ATRAC3plus) 11 hrs 19 mins
0,64 M.kbit / s (ATRAC3plus) ("Hi-LP") 34 hours
0,48 M.kbit / s (ATRAC3plus) 45 hours
,132 M.kbit / s (ATRAC3) 16 h 30 min
,105 M.kbit / s (ATRAC3) 20 hours 50 min
0,66 M.kbit / s (ATRAC3) 32 hours 50 min

In addition to Hi-MD media, conventional MDs can also be reformatted so that they can be used in Hi-MD mode; they then offer about 300 MB of storage capacity. Hi-MDs or MDs in Hi-MD mode are recognized by the operating system as an external drive so that any data can be stored on it. However, music must be played using SonicStage so that it can be played on the device.

Recording on conventional MDs without reformatting is only possible with the 1st and 3rd generation of devices; the 2nd generation can only record on MDs via a computer connection in NetMD mode.

The first iPod appeared in 2001, the iPod mini in 2004; In July 2011 Sony announced the end of the MiniDisc player production.

Web links

Commons : MiniDisc  - collection of pictures, videos and audio files

See also

Individual evidence

  1. a b https://www.avguide.ch/testbericht/minidisc-auf-hoehenflug-sony-mz-nh1-hi-md-walkman from November 15, 2004, accessed on May 29, 2020.
  2. test.de of December 22, 2004, The Return of the Mini-Disc , accessed on May 29, 2020.
  3. Nikkei.com: "Sony To Wind Up MiniDisc Walkman Shipments", July 7, 2011 ( Memento of July 11, 2011 in the Internet Archive )
  4. ↑ In the meantime: Sony launched the last MiniDisc player (February 2, 2013) , accessed on May 29, 2020.
  5. computerbase.de from February 1, 2013, last MiniDisc player will be delivered in March , accessed on May 29, 2020.