Re: Speaktime wavplay problem Debian Buster on PiRLP


Well... all I can say is, "that's as good an explanation as any"

Nick, try changing the -u and/or -s to -e and let us know if it fixes things... If not, I'll take a look and see if we can/should just remove sox and use aplay.

>< Dave Parks ><

On Sunday, November 24, 2019, 2:04:55 PM EST, David Cameron - IRLP <dcameron@...> wrote:

Well, when those scripts were made, if you typed

play 1.wav 2.wav 3.wav

The gap between 1 2 and 3 was in the order of two seconds, and it would
vary based on processor load, etc. The solution was to convert the wav
files to .au file (headerless, raw), concatenate them together, then
convert back to a wav file for playing. Really not a big deal, and it
worked well, UNTIL, the sox format changed to remove the -u flag for the
WAV file format. So, what happened is anything that called sox with a -u
flag was then broken.

With aplay, this is no longer required.

These scripts were not written my IRLP, and they are not maintained. If
someone wants to write updated scripts to either remove sox, or fix the
scripts that use sox, then this problem will go away. I fixed the
scripts for the PiRLP and Embedded nodes, but they are very specific,
and do not install well onto nodes that are not set up for them. The
same error exists in EchoIRLP as well - use of sox with the -u or -s flags.

If you take your existing directories and look in the scripts for all
use of "sox" with a -u or -s flag, and change them to -e
unsigned-integer, they should work as they used to.

David Cameron

On 23/11/2019 2:38 p.m., Nosey Nick VA3NNW wrote:
> Dave Parks - WB8ODF via Groups.Io wrote:
>> There is NO REASON to use sox in any of the IRLP scripts, I never
>> understood why Dave C used it.... EVER
> sox is a really good tool for converting between various audio
> formats. If .ul used to be an IRLP standard, but .wav was a later one,
> I can see why sox would be the obvious way to convert between them.
> ... or if .wav was always an IRLP standard, but the previous wavplayer
> left awkward gaps between samples, I can see why "convert them to
> raw/ul, join them together, convert them back, play as one file" might
> have seemed like a good idea at the time too.
> Meh... See what Dave C suggests
> --
> "Nosey" Nick Waterman, VA3NNW/G7RZQ, K2 #5209.
> use Std::Disclaimer;sig@...
> All those who believe in psychokinesis raise my hand.

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