Ä Area: [FIDO] PSION echo ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
  Msg#: 8486                                         Date: 20 Feb 95  19:27
  From: Faye Pearson                                 Read: Yes    Replied: No 
    To: Paul Hargreaves                              Mark:                     
  Subj: SND: guide PT1/2
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
Quoting William Legge to Paul Hargreaves on SND: device (among others)

This is part 1/2 of my SND: device lecture <g>

WL> How do you do multiple tones? I want to do them aswell!
WL> I can only get it to do 700Hz then 1100Hz for example, not
WL> both together!

Aha, try this extract from the Psionics DEVICES file written by Clive
Feather (clive@sco.com) and downloaded from src.doc.ic.ac.uk:

In order to use them successfully you have to be confident about
asynchronous device calls on the 3a i.e. IOA/IOC...

     -!->  See 3a programming manual pages 128-137, 94 <-!-

*****
The sound device has the name "SND:". There are no channel names.

Function:   1 (sound channel 1)
Function:   2 (sound channel 2)
Argument 1: note information
Argument 2: word holding number of notes
This function is supported by the HC, MC, and Series 3a only.

This plays a sequence of notes on the specified sound channel. The
note information is an array of words, two per note; the first is
the frequency of the note (in Hz), and the second the duration in
beats (see function 7).
The sound will not start until both these functions have been called
(thus ensuring the sound is synchronized on both channels).
The function completes when the specified channel finishes playing,
even if the other has not.


Function:   7
Argument 1: 2 byte information block
Argument 2: unused

The characteristics of the sound system are set according to the
block:
  Offset  0 (byte): beats per minute (2 to 240, default 120)
  Offset  1 (byte): volume (0 max to 5 min)
The beats per minute is only supported by the HC, MC, and Series 3a.
On the Series 3a, volumes 1 and 2 are identical, as are 4 and 5. On
the Series 3s, volumes 0 and 5 are unavailable.


Function:   8
Argument 1: 2 byte information block
Argument 2: unused

The block is filled in with information about the sound channel,
using the same format as function 7.


Function:   9
Argument 1: alarm type (0 = rings, 1 = chimes)
Argument 2: unused

The specified alarm is played; this function completes when the
sound has completely played.


Function:   10
Argument 1: phone number (cstr)
Argument 2: parameter block

This generates DTMF dialling sounds. The number contains the digits
to be dialled (0 to 9, *, #, and A to F can be used; E is the same
as *, and F the same as #). The parameter block has the format:
  Offset 0 (byte): tone length   )
  Offset 1 (byte): delay length  ) all in 1/32 seconds
  Offset 2 (word): pause length  )

*****

I hope that is useful to you,
Faye.


ž P3aOLR 2.2 ž It's not a bug it's a hidden and seldom used feature

-!- Olms 2.0 [PCTDH49H]
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