18 Mar
2003
18 Mar
'03
6:44 a.m.
Nick Bailey wrote:
I tried all other well-known sample
rate 8000,16000,44100 etc.
For example if I want 8000 Hz I should consider from every 6 byte only
the LSB byte
to obtain 8000Hz from 48000 Hz?(if the channel number is the same)
Should this software conversion work?
Turos Laszlo wrote:
Well I used under windows the windows
multimedia API(Mmsystem.h).I don't
know if it uses software conversion to produce other sampling rates.Does
it use?
I used the waveInOpen function(under windows of course ) to set the
desired sample rate and open the device.
Hi
I'm trying to write a soundrecorder application under linux.
I have Redhat 7.2 with kernel 2.4.
Playing sound on my soundcard works fine,but
I'm having problems recording.
I was using GNOME Sound recorder 1.2.3 to record sound but it seems
that it can only record sound at a 48000 Hz sampling rate,but playing back
the recorded sound it is a noise.
I wrote a little program myself and I reached the same conclusion that I
can not set other sampling rate than 48000.
My soundcard under Windows records good sound with other sampling
rates.
You don't know that. You mean "A file with other sampling rates can be
produced under Windows", right? I have my soundcard on my VIA motherboard.
I don't know this hardware, but you could try using 48k sampling rate
and converting to different sample rates when saving. Using sox down a
pipe works pretty well for this (other less hacky solutions exist :). It
seams a bit strange you can't record at least 44100 and 32000 as well,
though. What other sampling rates did you try? In my harware Browser looks like this:
Manufacturer: VIA Technologies
Driver: via82cxxx_audio
Can anybody give me a hint?
Best regards
Laci
--
Dr Nick Bailey n.j.bailey(a)elec.gla.ac.uk
Centre for Music Technology http://cmt.gla.ac.uk/
Dept of Electronics and Electrical Eng http://www.elec.gla.ac.uk/
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