author Abramo Bagnara <abramo@alsa-project.org>
author Jaroslav Kysela <perex@perex.cz>
author Justin Xu <justinx@slimlogic.co.uk>
author Liam Girdwood <lrg@slimlogic.co.uk>
Author of bandpass filter sweep effect:
author Stefan Schmidt <stefan@slimlogic.co.uk>
author Takashi Iwai <tiwai@suse.de>
author Uros Bizjak <uros@kss-loka.si>
Author: Jaroslav Kysela <perex@perex.cz>
Authors: Liam Girdwood <lrg@slimlogic.co.uk>
Authors: Mengdong Lin <mengdong.lin@intel.com>
Copyright (c) 1994-2000 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 1994-2003 by Jaroslav Kysela <perex@perex.cz>,
Copyright (c) 1994-98 by Jaroslav Kysela <perex@perex.cz>,
Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
Copyright (c) 1998 by Frank van de Pol <F.K.W.van.de.Pol@inter.nl.net>
Copyright (c) 1998 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 1998,1999,2000 by Jaroslav Kysela <perex@perex.cz>
Copyright (C) 1998,99,2000 Takashi Iwai <tiwai@suse.de>,
Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
Copyright (c) 1998-2001 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 1998/1999/2000 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 1999 by Takashi Iwai <tiwai@suse.de>
Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
Copyright (c) 2000 by Abramo Bagnara <abramo@alsa-project.org>
Copyright (c) 2000 by Abramo Bagnara <abramo@alsa-project.org>,
Copyright (c) 2000 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 2000,2004 by Jaroslav Kysela <perex@perex.cz>
Copyright (C) 2000-2002 Richard W.E. Furse, Paul Barton-Davis,
Copyright (c) 2001 by Abramo Bagnara <abramo@alsa-project.org>
Copyright (c) 2001 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 2001-2006 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 2002 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 2003 by Abramo Bagnara <abramo@alsa-project.org>
Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 2003 by Takashi Iwai <tiwai@suse.de>
Copyright (C) 2003 Thomas Charbonnel (thomas@undata.org)
Copyright (C) 2003 Winfried Ritsch (IEM)
Copyright (c) 2004 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 2004 by Jaroslav Kysela <perex@perex.cz> 
Copyright (c) 2004 by Takashi Iwai <tiwai@suse.de>
Copyright (c) 2005 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 2005 by Takashi Iwai <tiwai@suse.de>
Copyright (c) 2005 Takashi Iwai <tiwai@suse.de>
Copyright (c) 2006 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 2006 Takashi Iwai <tiwai@suse.de>
Copyright (c) 2007 by Jaroslav Kysela <perex@perex.cz>
Copyright (c) 2007 by Takashi Iwai <tiwai@suse.de>
Copyright (c) 2007 Takashi Iwai <tiwai@suse.de>
Copyright (C) 2008-2010 SlimLogic Ltd
Copyright (c) 2010 by Jaroslav Kysela <perex@perex.cz>
Copyright (C) 2010 Red Hat Inc.
Copyright (C) 2010 Texas Instruments Inc.
Copyright (C) 2010 Wolfson Microelectronics PLC
Copyright (C) 2012 Texas Instruments Inc.
Copyright (c) 2015 by Takashi Iwai <tiwai@suse.de>
Copyright (C) 2015 Intel Corporation
Copyright (C) 2015 Intel Corporation.
Copyright (c) 2015-2016 Takashi Sakamoto
Copyright (c) 2016 by  Thomas Klausner <wiz@NetBSD.org>
Copyright (c) by Abramo Bagnara <abramo@alsa-project.org>
Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
Copyright(c) 2014-2015 Intel Corporation
