audio-talk

I've been having a ruthless clearout of old books, most of which will be considered history. They are en route to the Oxfam shop but before they go I thought I'd post here in case there was some interest. They are all free(obviously) but for the postage...

DOS programmers reference(3rd ed) - Dettman and Johnson
LAN times : guide to interoperability - Sheldon et al
Object oriented modelling and design - Rumbaugh et al
How to set up a website(2nd ed) - Stein
programmers guide to IBM PC & PS2 - Norton
Just Java - van der Linden
Electrical and electronic principals - John Bird
Acoustics - Heinrich Kuttruff
High performance audio power amplifiers - Duncan
Programming the 8088/8086 - Coffron
Mastering CP/M - Miller
Borland C++(4th ed)
Peter Nortons Assembly language for the IBM PC - Norton and Socha
SSADM a practical approach - Ashworth and Goodland

I'd like to read this one Ed,

High performance audio power amplifiers - Duncan

BUT, did you realise they are advertised between £40 - £70 for used copies on Ebay ?

Blast - beat me to it.

I think I might have used Electrical and electronic principals - John Bird at Uni?

revised list, much as expected:

DOS programmers reference(3rd ed) - Dettman and Johnson
LAN times : guide to interoperability - Sheldon et al
Object oriented modelling and design - Rumbaugh et al
How to set up a website(2nd ed) - Stein
programmers guide to IBM PC & PS2 - Norton
Just Java - van der Linden
Programming the 8088/8086 - Coffron
Mastering CP/M - Miller
Borland C++(4th ed)
Peter Nortons Assembly language for the IBM PC - Norton and Socha
SSADM a practical approach - Ashworth and Goodland

I just threw out (to recycling) about 100kg of old cpm/dos/Windows NT/windows 95/MFC/ATL/DCOM/LDAP/X.400/VMS Internals/whatever books plus all my old copies of the C++ Users Journal, Microsoft Windows Developer's Journal, DEC Technical Journal etc ...

Still got a crate of all my VMS backups on 600, 1200 and 2400 ft tapes... Oh, and a shoebox of DAT cartridges...

Obviously no way of reading them now...

Whole bootloader of a Volvo estate...

Now here's a thing... it just triggered a memory I have a of a guy I used to discuss astronomy with. He was a teacher, lived just down the road. This is early 90's I think , he had shelves full of Radio 3concerts he'd recorded onto DAT tape. It was quite a thing at the time, but short-lived. Does anybody know off-had what the quality level ( kHz/bit-rate) was, for the music DAT format ?

ISTR it's the same as a CD as you can lossless copy a CD to DAT and vice versa...

But the one DAT drive I kept is a SCSI data one (an HP), and I really don't know if it still works - not used it for at least 10 years.

Still have the Adaptec 2940UW SCSI card for it though

44.1

Aha, righto. But I suspect quite a bit of storage per tape ?

jack wrote: ↑Tue Feb 26, 2019 7:06 pm ISTR

Who is he, never heard of him ?

ed wrote: ↑Tue Feb 26, 2019 11:22 pm44.1

I seem to remember early ones working at 48 kHz as well.

Yes, 44.1 & 48Khz selectable on record. I still have a Sony DT60ES unit in the loft somewhere.

Nick wrote: ↑Wed Feb 27, 2019 12:04 pm

ed wrote: ↑Tue Feb 26, 2019 11:22 pm44.1

I seem to remember early ones working at 48 kHz as well.

memory is not firing on all cylinders but I seem to recall the consumer stuff was mainly at 44.1 but the pro versions saw a lot of ADAT which was dat format onto bigger tapes(vhs tape) which could all run at x2, i.e 88.2k and 96k. The latter were mainly multi track machines I believe. It's still in use so there are machines to be had if interested.

I never got to use one but instead I had an 8 track minidisc machine which was much more practical at the time.

I once had a high-end(dish) Phillips VHS recorder which had a hifi audio record/playback mode - using the high speed helical heads for audio. Can't remember if I ever got round to trying it out.........maybe it was ADAT?

I'd guess at NICAM if the stereo audio was recorded and played back by the helical scanning head.

Regular audio using the fixed audio tracking head was fairly pants IME.