--- In "afg_herwijn" <> wrote:
>
> Hi all,
>
> Long time reader, first time poster.
> I am using a USB soundcard on my TS-7260 board (linux 2.4.26-ts11) to
> continuously record sound. It records and plays wav files without any
> problem. I can convert wav to mp3 using lame, but this takes a long
> time, and play them using mpg123. Trying to do this real time does not
> work (i.e. recording mp3 in real-time). I end up with an empty mp3
> file. Here is the command I have used:
>
> rawrec -c 1 -d /dev/dsp/ -f s16_le -s 22000 - | lame -r -s 22
> --bidwidth 16 --little-endian -m m - test.mp3
>
> Has anyone been able to do this real-time? Or does anyone have a
> suggestion (e.g. using another format or other software)?
Hi Alec --
I believe your problem is the dismal floating point performance of
this chip / SW system. You can either look for a fixed point encoder
and player programs, or you can have a go at improving your floating
point performance.
By using EABI, I've seen improvements of 18x to 21x in FP benchmarks
and FP FFT tests, compared to OABI. But it is not trivial to do with
these boards: you need a kernel that can run EABI binaries, and either
EABI libc or statically linked EABI test programs.
There are several earlier posts about this, so there should be more
info in the archives.
Regards, ....... Charlie
> Thanks,
>
> Alec
>
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