Date: Tue, 30 Jan 2007 12:17:46 +0100 From: Stefan Ehmann <shoesoft@gmx.net> To: Alexander Leidinger <Alexander@leidinger.net> Cc: freebsd-multimedia@freebsd.org Subject: Re: envy24 sound quality problem Message-ID: <200701301217.47400.shoesoft@gmx.net> In-Reply-To: <20070128144543.4e62c6ba@Magellan.Leidinger.net> References: <200701250027.02015.shoesoft@gmx.net> <8103ad500701270728k1d04eb13jcfb9b4bf09304ae2@mail.gmail.com> <20070128144543.4e62c6ba@Magellan.Leidinger.net>
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On Sunday 28 January 2007 14:45, Alexander Leidinger wrote: > Quoting "Konstantin Dimitrov" <kosio.dimitrov@gmail.com> (Sat, 27 Jan 2007 17:28:51 +0200): > > "spicds_setdvc(ptr->info, 0);" turns on the AK452X De-emphasis filter > > for 44.1KHz, which is very very wrong, so "spicds_setdvc(ptr->info, > > AK452X_DVC_DEMOFF);" is completely right and without active AK452X > > De-emphasis filter the high-frequencies will be present and the > > problem is fixed. > > > > thank you, Stefan, well done! > > > > i also made the necessary change to the current code here: > > http://envy24.svobodno.com/driver/envy24/current/ > > Anything to commit? Should definitely be committed (if Konstantin agrees). He also changed this in envy24ht.c which basically uses the same code. With this fix, spectrum analysis of the snd_envy24 output looks (practically) identical to the output of the win/opensound driver. Stefan
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