На Sat, 8 Jan 2011 22:42:30 -0800 (PST) Bill Unruh <un...@physics.ubc.ca> записано:
> On Sun, 9 Jan 2011, IL'dar AKHmetgaleev wrote: > > > Greetins. > > > > I have USB headset which produces a little DC Offset when I'm > > recording sound. > > Windows magicaly corrects it even inside virtual machine. > > > > How can I remove DC Offset from my microphone input? > > Not sure what you mean. Do you mean that there is an electrical > voltage on that input or that when you record, there is a non-zero > mean level? If the former, then that is probably to give power to > electret condenser microphones to run their fets. If the latter, then > you can always apply a digital filter that takes out ultra low > frequencies. Yes I can apply digital filter if I recording sound. But If I'm using headset for VoIP chatting? I'm currently using ladspa plugin in asoundrc. But this solution doesn't work with all applications. > > > > As I know there is a lot cheap hardware which produces DC Offset. > > A capacitor removes DC offset. and they are quite cheap. Yes. but it's a USB headset. It has USB connector at one side and microphone at another side. Hacking and putting capacitor into this hardware not very easy solution. -- Ильдар Ахметгалеев aka AkhIL Вск Янв 9 12:54:23 NOVT 2011 Sun Jan 9 06:54:23 UTC 2011 ---------------------------------- Visit my home page http://akhil.homelinux.org jabber: ak...@jabber.ru ---------------------------------- Ничего не важно, потому что ничто не может быть важнее чем что-то другое. ---------------------------------- Linux artstation 2.6.32-gentoo-r24 #1 SMP Sat Jan 1 20:29:36 NOVT 2011 x86_64 AMD Phenom(tm) 9550 Quad-Core Processor AuthenticAMD GNU/Linux up 1 day, 22:47, 1 user, load average: 0.01, 0.01, 0.00 ------------------------------------------------------------------------------ Gaining the trust of online customers is vital for the success of any company that requires sensitive data to be transmitted over the Web. Learn how to best implement a security strategy that keeps consumers' information secure and instills the confidence they need to proceed with transactions. http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
