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Conference napalm::commusic_v1

Title:* * Computer Music, MIDI, and Related Topics * *
Notice:Conference has been write-locked. Use new version.
Moderator:DYPSS1::SCHAFER
Created:Thu Feb 20 1986
Last Modified:Mon Aug 29 1994
Last Successful Update:Fri Jun 06 1997
Number of topics:2852
Total number of notes:33157

2652.0. "Restoring Antique Recordings" by FORTSC::CHABAN () Tue May 28 1991 23:07

    
    I noticed that Jens caught my postings in the AUDIO and
    AUDIO_ENGINEERING notes file, but I figured I'd try here too...
    
    Anyway, I have some nifty digital restorations of Caruso recordings
    where Thomas Stockham removed the resonant effects of the mechanical
    horn used in the acoustical recordings (Caruso died in 1921 and was
    never recorded electrically) This was done on a PDP-11 some time ago.
    
    Mickey Hart of the Grateful Dead has been removing the pops and clicks
    from early blues recordings with the DigiDesign stuff on a MacIntosh.
    I've heard that Andy Moorer (of Lucasfilm SoundDroid fame) is also in
    this business.  
    
    Does anyone have more info?
    
    _Ed
    
    Vintage Audio Buff
    
T.RTitleUserPersonal
Name
DateLines
2652.1Try the MIX Bookshelf catalogEZ2GET::STEWARTNo, I mean Real Music.Wed May 29 1991 00:219
    
    
    
    The pops and clicks aren't too hard to remove, as long as you've got a
    high quality tape deck that'll do at least 15 ips, a sharp razor blade,
    and a lot of patience.  Stockham's efforts are a little harder to
    duplicate.  *8')
    
    
2652.2NO-NOISE CDTKOV60::YAMAMOTO_�ȥ󥫥���������Ư������γڤ��ߤ�Wed May 29 1991 01:0413
I heard about NO-NOISE CD series from Phillips Record.
NO-NOISE system is on SUN workstation(or Macintosh),
It removes pop,click,ham or buzz,hiss noise from old
record(SP,or silinder,and so on.) automatically.
NO-NOISE CD series line-up contains old great conductor
or player's performance. (ex."Ravel conducts Ravel" (!!)
... Is spell correct?)

NO-NOISE system needs *VERY* long CPU time and HD capacity.
SUN workstation version needs 5,6, or 12 hours per one SP 
disk,I heard.

Hidemi
2652.3KEYS::moellerattack of the C shell zombiesWed May 29 1991 13:3310
I read in one of the more obscure music comix that a firm was founded in 
Britain in order to get a contract to digitally restore music out of their
(BBC?can't recall) national archives.  A bunch of Ccode, algorithms NOT
discussed, running on UNIX PC's - mentioned CD quality from ancient 
lacquer masters - this is far above just removing clicks and pops - multiple
passes remove noise in specific bandwidths.  Fascinating stuff.  Also made
mention of creating stereo recordings from multiple mono masters (mics in
different parts of the sound stage) of the same performance... digital quality.

karl
2652.4hmVICE::JANZENA Refugee From Performance ArtWed May 29 1991 14:135
	Gee, an Amiga with a sound digitizer and the more recent s/w
	is good enough to improve
	really old recordings.  I've put 3 minutes into memory, mono.
	Hm.  Unfortunately, this subject bores the crud out of me.
	Tom
2652.5BrahmsQUIVER::PICKETTDavid - Live free or live in Mass.Mon Jun 03 1991 23:147
    Being a bit more enthusiatic than Tom, I was wondering... Has anyone
    tried to restore the fragments of Brahms playing Brahms? Aparently,
    Edison recorded Bramhs playing some exerpts from his piano works
    shortly before the composer's death. The recordings are in the national
    archive. I'd love to heard restorations of these.
    
    dp
2652.6FORTSC::CHABANTue Jun 04 1991 15:556
     
    I've never heard of anyone trying this.  I can't think of a reason why
    Stockham's method can't be applied here.
    
    -Ed