Nick Bailey wrote: > > Turos Laszlo wrote: > > >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? 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.
> > >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? 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? > > >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 [EMAIL PROTECTED] > Centre for Music Technology http://cmt.gla.ac.uk/ > Dept of Electronics and Electrical Eng http://www.elec.gla.ac.uk/ > The University of Glasgow http://www.gla.ac.uk > > European Copyright Directive/Software Patenting: > Help us fight the war on terrorism. > http://cmt.gla.ac.uk/Info/swpatents.html > > The OpenDrama Survey: please tell us your opinions! > http://markov.music.gla.ac.uk/Projects/OpenDrama/OD-Survey/