At 11:34 PM 3/12/03 -0500, Ronald Rossi wrote:
>I have been doing a little bit of research and found reference to the
>sample rate being set differently between SB16 and other cards. The rate
>in SBDVP is set using a timeconstant related to the sample rate in Hz.
>The SB16 is set using the sample rate. Is is possible this may be partly
>to blame? It also appears that the rate is set independently for play
>and record. I could not see where this was covered in the SBDVP source.
>
>Pete or Don, Maybe you could check to see what the sample rate of the
>recorded file is when you play it with GoldWave or whatever.
I have checked a number of files recorded through TR and SBDVP with
Goldwave, and find they sound natural at 12K or thereabouts. When I start
either an ISA or a PCI SB16, I get the following report in the DOS window:
C:\LOG\CONTESTS\03\Test>sbdvp
program sbdvp Version 1.0.3
IRQ = 5
BASEIO = 220
DMA = 1
SBTYPE = 6
CQF10.DVP opened 46000 bytes
nearest rate is 12048 Hz
Attempting reset of sound card
Successful
Does the "nearest rate" information mean that SBDVP has found that the
sound card has a number of preset rates, and has chosen the one closest to
its optimum?
73, Pete N4ZR
The World HF Contest Station Database was updated 23 Feb 03.
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