Revision [1776]

Last edited on 2011-12-17 20:22:55 by MarioKleiner [Remove requirement for asio dll download.]
Additions:
Our //""PsychPortAudio""// driver can take advantage of ASIO. If you have Psychtoolbox version 3.0.9 or later, this works out of the box with the driver that comes with that Psychtoolbox version.
Users that want to stick to older versions of Psychtoolbox need to manually download and install the required ASIO DLL library from this link:
For Psychtoolbox 3.0.8 and earlier, we can not provide this DLL as part of the standard PTB distribution due to incompatibilities between the ASIO license, and PTB's former GPL license (Disclaimer: "ASIO is a trademark and software of Steinberg Media Technologies GmbH."). Therefore, if you download the linked zip file, you'll find a License file inside the zip file, which grants you a non-exclusive, royalty free right to copy and use the included DLL file for the purpose of using it with our //""PsychPortAudio""// driver on Microsoft Windows operating systems, directly given to you by Mario Kleiner, the copyright holder of that zip file, as long as you comply to the license terms. The zip file also contains a Readme file with specific installation and usage instructions, a list of tested sound cards and other interesting bits of information, in other words: It's a mandatory read!
Deletions:
Our //""PsychPortAudio""// driver can take advantage of ASIO as well. To enable ASIO support, you will need to download and install an extra DLL from this link:
We can't provide this DLL as part of the standard PTB distribution due to incompatibilities between the ASIO license, and PTB's GPL license (Disclaimer: "ASIO is a trademark and software of Steinberg Media Technologies GmbH."). Therefore, if you download the linked zip file, you'll find a License file inside the zip file, which grants you a non-exclusive, royalty free right to copy and use the included DLL file for the purpose of using it with our //""PsychPortAudio""// driver on Microsoft Windows operating systems, directly given to you by Mario Kleiner, the copyright holder of that zip file, as long as you comply to the license terms. The zip file also contains a Readme file with specific installation and usage instructions, a list of tested sound cards and other interesting bits of information, in other words: It's a mandatory read!

Revision [1479]

Edited on 2008-11-02 13:35:15 by MarioKleiner [More licensing and legal schnickschnack for portaudio...]
Additions:
We can't provide this DLL as part of the standard PTB distribution due to incompatibilities between the ASIO license, and PTB's GPL license (Disclaimer: "ASIO is a trademark and software of Steinberg Media Technologies GmbH."). Therefore, if you download the linked zip file, you'll find a License file inside the zip file, which grants you a non-exclusive, royalty free right to copy and use the included DLL file for the purpose of using it with our //""PsychPortAudio""// driver on Microsoft Windows operating systems, directly given to you by Mario Kleiner, the copyright holder of that zip file, as long as you comply to the license terms. The zip file also contains a Readme file with specific installation and usage instructions, a list of tested sound cards and other interesting bits of information, in other words: It's a mandatory read!
The following sections provide you with information about how to use //low-latency, high precision// mode efficiently. Use of the //normal// mode is straightforward and demonstrated for sound output in the //""BasicSoundOutputDemo.m""// which is part of your PTB-3 distribution and //""BasicSoundInputDemo.m""// for basic sound recording/capture.
Deletions:
This page provides you with information about how to use //low-latency, high precision// mode efficiently. Use of the //normal// mode is straightforward and demonstrated for sound output in the //""BasicSoundOutputDemo.m""// which is part of your PTB-3 distribution and //""BasicSoundInputDemo.m""// for basic sound recording/capture.

Revision [1478]

Edited on 2008-11-02 13:26:01 by MarioKleiner [Update, add more documentation and download link for ASIO enabled portaudio_x86.dll]
Additions:
PTB-3's new sound driver //""PsychPortAudio""// tries to address this issues and to provide a sound driver specifically designed for the needs of psychophysics. Currently the driver can play back multi-channel sound (on multi-channel sound hardware), and it supports audio recording and simultaneous recording and playback (full duplex mode), also from multiple channels on multi-channel hardware.
The current driver (as shipped with PTB-3 //beta//) supports Microsoft Windows 2000 and XP (likely also Vista - but this is untested by the developers) and ""MacOS/X"" (tested with Tiger 10.4.9 to 10.4.11 on ""IntelMac"" and ""PowerPC""), as well as ""GNU/Linux"" (tested with Ubuntu 7.1 on a MacBookPro with the ALSA sound system).
The current driver provides two different classes of sound output, //normal// playback mode and //low-latency, high precision// mode. //Normal// mode is the default mode of operation. It should allow for reliable, glitch free sound playback with low processor load on the widest possible variety of sound hardware. //Low latency, high precision// mode is optimized for low sound onset latencies and high precision of sound onset at requested times, prioritizing that goals over any other goals (e.g., low system load). While this high precision mode works very well out of the box on standard Macintosh computers with ""OS/X"", as well as on standard PC's under ""GNU/Linux"", it needs special hardware drivers on the Windows platform, so called ASIO drivers to get similar performance on that operating system.
MS-Windows built-in sound subsystems are pretty much incapable by design of providing well defined timing in the auditory domain and are sub-standard in many other areas as well. As a way around that limitation, the German company Steinberg, vendor of well-known professional sound applications and equipment for Windows PC's, designed an alternative sound subsystem called ASIO ("Audio streaming input output") specifically for the needs of professional sound production. Today, all high end soundcards ship with special ASIO drivers - device drivers that implement that interface in addition to the standard sound interfaces of MS-Windows, and professional level sound applications do use that ASIO interface to control sound hardware, bypassing the Windows sound system entirely.
Our //""PsychPortAudio""// driver can take advantage of ASIO as well. To enable ASIO support, you will need to download and install an extra DLL from this link:
[[http://psychtoolbox.org/download/portAudio_x86_with_ASIO.zip Click this link to download the special ASIO enabled windows sound driver]]
Deletions:
PTB-3's new sound driver //""PsychPortAudio""// tries to address this issues and to provide a sound driver specifically designed for the needs of psychophysics. The driver is currently in //early beta stage//, its planned feature set is not yet completed, the programming interface will likely undergo some small changes in the future and some parts of the driver will need some fine-tuning in the near future. Currently the driver can play back multi-channel sound (on multi-channel sound hardware), and it supports audio recording and simultaneous recording and playback (full duplex mode), although the recording part has not yet been verified for timing.
The current driver (as shipped with PTB-3 //beta//) supports Microsoft Windows 2000 and XP (maybe also Vista - untested) and ""MacOS/X"" (tested with Tiger 10.4.9 and 10.4.10 on ""IntelMac"" and ""PowerPC""), as well as ""GNU/Linux"" (tested with Ubuntu 7.1 on MacBookPro with the ALSA sound system).
The current driver provides two different classes of sound output, //normal// playback mode and //low-latency, high precision// mode. //Normal// mode is the default mode of operation. It should allow for reliable, glitch free sound playback with low processor load on the widest possible variety of sound hardware. //Low latency, high precision// mode is optimized for low sound onset latencies and high precision of sound onset at requested times, prioritizing that goals over any other goals (e.g., low system load). While this high precision mode works very well on standard Macintosh computers with ""OS/X"", it needs special hardware drivers on the Windows platform, so called ASIO drivers to get similar performance on that operating system.

Revision [1372]

Edited on 2008-06-23 18:07:56 by MarioKleiner [M-Audio Delta 1010LT - exact name added. Update: Linux is also supported.]
Additions:
The current driver (as shipped with PTB-3 //beta//) supports Microsoft Windows 2000 and XP (maybe also Vista - untested) and ""MacOS/X"" (tested with Tiger 10.4.9 and 10.4.10 on ""IntelMac"" and ""PowerPC""), as well as ""GNU/Linux"" (tested with Ubuntu 7.1 on MacBookPro with the ALSA sound system).
Deletions:
The current driver (as shipped with PTB-3 //beta//) supports Microsoft Windows 2000 and XP (maybe also Vista - untested) and ""MacOS/X"" (tested with Tiger 10.4.9 and 10.4.10 on ""IntelMac"" and ""PowerPC""), a version for ""GNU/Linux"" is planned as well.

Revision [1371]

Edited on 2008-06-23 18:05:51 by MarioKleiner [Be more accurate in benchmark table: Its a Delta 1010-LT]
Additions:
{{table columns="9" cellpadding="1" cells="Operating System; Sound card and Driver ; ASIO type; ASIO settings; PsychPortAudio('Open') parameters ; Onset latency (ms); Onset accuracy (stddev from mean in ms); Misc comments; Who?; OS/X 10.4.9; Intel MacBookPro 2.33Ghz, Intel HDA onboard sound; Not needed; -; Pa('Open', [], [], 2, 96000, 2 [, 64]); 5.49 ms; 0.022 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Dell computer with M-Audio Delta 1010-LT multichannel card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 5.87 ms; 0.018 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Computer with Creative Labs Audigy 4 card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 4 ms; better than 0.1 ms; 1 ms bias without latency bias set; Ken Roberts - Duke univ."}}
Deletions:
{{table columns="9" cellpadding="1" cells="Operating System; Sound card and Driver ; ASIO type; ASIO settings; PsychPortAudio('Open') parameters ; Onset latency (ms); Onset accuracy (stddev from mean in ms); Misc comments; Who?; OS/X 10.4.9; Intel MacBookPro 2.33Ghz, Intel HDA onboard sound; Not needed; -; Pa('Open', [], [], 2, 96000, 2 [, 64]); 5.49 ms; 0.022 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Dell computer with M-Audio Delta multichannel card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 5.87 ms; 0.018 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Computer with Creative Labs Audigy 4 card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 4 ms; better than 0.1 ms; 1 ms bias without latency bias set; Ken Roberts - Duke univ."}}

Revision [1304]

Edited on 2008-01-29 22:54:18 by MarioKleiner [Changed wording for Audigy4 measurements - Old was ambiguous]
Additions:
{{table columns="9" cellpadding="1" cells="Operating System; Sound card and Driver ; ASIO type; ASIO settings; PsychPortAudio('Open') parameters ; Onset latency (ms); Onset accuracy (stddev from mean in ms); Misc comments; Who?; OS/X 10.4.9; Intel MacBookPro 2.33Ghz, Intel HDA onboard sound; Not needed; -; Pa('Open', [], [], 2, 96000, 2 [, 64]); 5.49 ms; 0.022 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Dell computer with M-Audio Delta multichannel card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 5.87 ms; 0.018 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Computer with Creative Labs Audigy 4 card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 4 ms; better than 0.1 ms; 1 ms bias without latency bias set; Ken Roberts - Duke univ."}}
Deletions:
{{table columns="9" cellpadding="1" cells="Operating System; Sound card and Driver ; ASIO type; ASIO settings; PsychPortAudio('Open') parameters ; Onset latency (ms); Onset accuracy (stddev from mean in ms); Misc comments; Who?; OS/X 10.4.9; Intel MacBookPro 2.33Ghz, Intel HDA onboard sound; Not needed; -; Pa('Open', [], [], 2, 96000, 2 [, 64]); 5.49 ms; 0.022 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Dell computer with M-Audio Delta multichannel card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 5.87 ms; 0.018 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Computer with Creative Labs Audigy 4 card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 4 ms; 1 ms; 1 ms without latency bias set; Ken Roberts - Duke univ."}}

Revision [1303]

Edited on 2008-01-29 16:47:32 by MarioKleiner [Added measurements from Ken Roberts for Create Audigy 4]
Additions:
{{table columns="9" cellpadding="1" cells="Operating System; Sound card and Driver ; ASIO type; ASIO settings; PsychPortAudio('Open') parameters ; Onset latency (ms); Onset accuracy (stddev from mean in ms); Misc comments; Who?; OS/X 10.4.9; Intel MacBookPro 2.33Ghz, Intel HDA onboard sound; Not needed; -; Pa('Open', [], [], 2, 96000, 2 [, 64]); 5.49 ms; 0.022 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Dell computer with M-Audio Delta multichannel card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 5.87 ms; 0.018 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Computer with Creative Labs Audigy 4 card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 4 ms; 1 ms; 1 ms without latency bias set; Ken Roberts - Duke univ."}}
Deletions:
{{table columns="9" cellpadding="1" cells="Operating System; Sound card and Driver ; ASIO type; ASIO settings; PsychPortAudio('Open') parameters ; Onset latency (ms); Onset accuracy (stddev from mean in ms); Misc comments; Who?; OS/X 10.4.9; Intel MacBookPro 2.33Ghz, Intel HDA onboard sound; Not needed; -; Pa('Open', [], [], 2, 96000, 2 [, 64]); 5.49 ms; 0.022 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Dell computer with M-Audio Delta multichannel card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 5.87 ms; 0.018 ms; Just works :-); Massimilliano di Luca and Mario Kleiner"}}

Revision [1185]

Edited on 2007-07-26 17:08:34 by MarioKleiner [Its not a Audigy Delta, but a M-Audio Delta, stupid!]
Additions:
{{table columns="9" cellpadding="1" cells="Operating System; Sound card and Driver ; ASIO type; ASIO settings; PsychPortAudio('Open') parameters ; Onset latency (ms); Onset accuracy (stddev from mean in ms); Misc comments; Who?; OS/X 10.4.9; Intel MacBookPro 2.33Ghz, Intel HDA onboard sound; Not needed; -; Pa('Open', [], [], 2, 96000, 2 [, 64]); 5.49 ms; 0.022 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Dell computer with M-Audio Delta multichannel card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 5.87 ms; 0.018 ms; Just works :-); Massimilliano di Luca and Mario Kleiner"}}
Deletions:
{{table columns="9" cellpadding="1" cells="Operating System; Sound card and Driver ; ASIO type; ASIO settings; PsychPortAudio('Open') parameters ; Onset latency (ms); Onset accuracy (stddev from mean in ms); Misc comments; Who?; OS/X 10.4.9; Intel MacBookPro 2.33Ghz, Intel HDA onboard sound; Not needed; -; Pa('Open', [], [], 2, 96000, 2 [, 64]); 5.49 ms; 0.022 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Dell computer with Audigy Delta multichannel card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 5.87 ms; 0.018 ms; Just works :-); Massimilliano di Luca and Mario Kleiner"}}

Revision [1176]

Edited on 2007-07-05 14:28:34 by MarioKleiner [Small updates: Wording and audio capture capabilities...]
Additions:
Standard sound drivers and output functions as provided by Matlab (e.g., //sound, soundsc, wavplay, audioplayer, SND//) as well as the sound drivers of many other psychophysics toolkits are not really well suited for low latency sound playback with high timing precision, because they don't provide mechanisms for timed sound onset, timing control or low latency operation. Their sole purpose is to make it simple to playback a sound, without any special emphasis on high efficiency or precise timing. Apart from that, Matlabs sound drivers have been the cause of many sound playback problems and crashes due to some significant bugs and design flaws in their implementation.
PTB-3's new sound driver //""PsychPortAudio""// tries to address this issues and to provide a sound driver specifically designed for the needs of psychophysics. The driver is currently in //early beta stage//, its planned feature set is not yet completed, the programming interface will likely undergo some small changes in the future and some parts of the driver will need some fine-tuning in the near future. Currently the driver can play back multi-channel sound (on multi-channel sound hardware), and it supports audio recording and simultaneous recording and playback (full duplex mode), although the recording part has not yet been verified for timing.
The current driver (as shipped with PTB-3 //beta//) supports Microsoft Windows 2000 and XP (maybe also Vista - untested) and ""MacOS/X"" (tested with Tiger 10.4.9 and 10.4.10 on ""IntelMac"" and ""PowerPC""), a version for ""GNU/Linux"" is planned as well.
The current driver provides two different classes of sound output, //normal// playback mode and //low-latency, high precision// mode. //Normal// mode is the default mode of operation. It should allow for reliable, glitch free sound playback with low processor load on the widest possible variety of sound hardware. //Low latency, high precision// mode is optimized for low sound onset latencies and high precision of sound onset at requested times, prioritizing that goals over any other goals (e.g., low system load). While this high precision mode works very well on standard Macintosh computers with ""OS/X"", it needs special hardware drivers on the Windows platform, so called ASIO drivers to get similar performance on that operating system.
This page provides you with information about how to use //low-latency, high precision// mode efficiently. Use of the //normal// mode is straightforward and demonstrated for sound output in the //""BasicSoundOutputDemo.m""// which is part of your PTB-3 distribution and //""BasicSoundInputDemo.m""// for basic sound recording/capture.
{{table columns="9" cellpadding="1" cells="Operating System; Sound card and Driver ; ASIO type; ASIO settings; PsychPortAudio('Open') parameters ; Onset latency (ms); Onset accuracy (stddev from mean in ms); Misc comments; Who?; OS/X 10.4.9; Intel MacBookPro 2.33Ghz, Intel HDA onboard sound; Not needed; -; Pa('Open', [], [], 2, 96000, 2 [, 64]); 5.49 ms; 0.022 ms; Just works :-); Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Dell computer with Audigy Delta multichannel card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 5.87 ms; 0.018 ms; Just works :-); Massimilliano di Luca and Mario Kleiner"}}
Deletions:
Standard sound drivers and output functions as provided by Matlab (e.g., //sound, soundsc, wavplay, audioplayer, SND//) as well as the sound drivers of other psychophysics toolkits are not really well suited for low latency sound playback with high timing precision, because they don't provide mechanisms for timed sound onset, timing control or low latency operation. Their sole purpose is to make it simple to playback a sound, without any special emphasis on high efficiency or precise timing. Apart from that, Matlabs sound drivers have been the cause of many sound playback problems and crashes due to some significant bugs and design flaws in their implementation.
PTB-3's new sound driver //""PsychPortAudio""// tries to address this issues and to provide a sound driver specifically designed for the needs of psychophysics. The driver is currently in //early beta stage//, its planned feature set is not yet completed, the programming interface will likely undergo some changes in the future and some parts of the driver will need some fine-tuning in the near future. Currently the driver can only playback multi-channel sound (on multi-channel sound hardware), but we plan support for audio recording and simultaneous recording and playback (full duplex mode) for the future.
The current driver (as shipped with PTB-3 //beta//) supports Microsoft Windows 2000 and XP (maybe also Vista - untested), versions for ""MacOS/X"" will become available soon, a version for GNU/Linux is planned as well.
The current driver provides two different classes of sound output, //normal// playback mode and //low-latency, high precision// mode. //Normal// mode is the default mode of operation. It should allow for reliable, glitch free sound playback with low processor load on the widest possible variety of sound hardware. //Low latency, high precision// mode is optimized for low sound onset latencies and high precision of sound onset at requested times, prioritizing that goals over any other goals (e.g., low system load).
This page provides you with information about how to use //low-latency, high precision// mode efficiently. Use of the //normal// mode is straightforward and demonstrated in the //""BasicSoundOutputDemo.m""// which is part of your PTB-3 distribution.
{{table columns="9" cellpadding="1" cells="Operating System; Sound card and Driver ; ASIO type; ASIO settings; PsychPortAudio('Open') parameters ; Onset latency (ms); Onset accuracy (stddev from mean in ms); Misc comments; Who?; OS/X 10.4.9; Intel MacBookPro 2.33Ghz, Intel HDA onboard sound; -; -; Pa('Open', [], [], 2, 96000, 2 [, 64]); 5.49 ms; 0.022 ms; Just works!; Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Dell computer with Audigy Delta multichannel card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 5.87 ms; 0.018 ms; Just works!; Massimilliano di Luca and Mario Kleiner"}}

Revision [1167]

Edited on 2007-06-22 22:01:29 by MarioKleiner [Our two preliminary measurement results added, table prepared.]
Additions:
== __Tested configurations of OS & Sound hardware: Optimal parameter settings with measured results__ ==
{{table columns="9" cellpadding="1" cells="Operating System; Sound card and Driver ; ASIO type; ASIO settings; PsychPortAudio('Open') parameters ; Onset latency (ms); Onset accuracy (stddev from mean in ms); Misc comments; Who?; OS/X 10.4.9; Intel MacBookPro 2.33Ghz, Intel HDA onboard sound; -; -; Pa('Open', [], [], 2, 96000, 2 [, 64]); 5.49 ms; 0.022 ms; Just works!; Massimilliano di Luca and Mario Kleiner; WinXP-SP2; Dell computer with Audigy Delta multichannel card; native; - ; ('Open', [], [], 2, 96000, 2 [, 64]); 5.87 ms; 0.018 ms; Just works!; Massimilliano di Luca and Mario Kleiner"}}

Revision [1166]

Edited on 2007-06-22 21:22:46 by MarioKleiner [First bits of text written, much more to do...]
Additions:

For many studies in the area of audio perception and audio-visual integration it is important to be able to play back sound signals with a low onset latency and/or at precisely defined points in time, e.g., in exact synchrony to the onset of a visual or tactile stimulus.

Standard sound drivers and output functions as provided by Matlab (e.g., //sound, soundsc, wavplay, audioplayer, SND//) as well as the sound drivers of other psychophysics toolkits are not really well suited for low latency sound playback with high timing precision, because they don't provide mechanisms for timed sound onset, timing control or low latency operation. Their sole purpose is to make it simple to playback a sound, without any special emphasis on high efficiency or precise timing. Apart from that, Matlabs sound drivers have been the cause of many sound playback problems and crashes due to some significant bugs and design flaws in their implementation.

PTB-3's new sound driver //""PsychPortAudio""// tries to address this issues and to provide a sound driver specifically designed for the needs of psychophysics. The driver is currently in //early beta stage//, its planned feature set is not yet completed, the programming interface will likely undergo some changes in the future and some parts of the driver will need some fine-tuning in the near future. Currently the driver can only playback multi-channel sound (on multi-channel sound hardware), but we plan support for audio recording and simultaneous recording and playback (full duplex mode) for the future.

The current driver (as shipped with PTB-3 //beta//) supports Microsoft Windows 2000 and XP (maybe also Vista - untested), versions for ""MacOS/X"" will become available soon, a version for GNU/Linux is planned as well.

The current driver provides two different classes of sound output, //normal// playback mode and //low-latency, high precision// mode. //Normal// mode is the default mode of operation. It should allow for reliable, glitch free sound playback with low processor load on the widest possible variety of sound hardware. //Low latency, high precision// mode is optimized for low sound onset latencies and high precision of sound onset at requested times, prioritizing that goals over any other goals (e.g., low system load).

This page provides you with information about how to use //low-latency, high precision// mode efficiently. Use of the //normal// mode is straightforward and demonstrated in the //""BasicSoundOutputDemo.m""// which is part of your PTB-3 distribution.

//... to be continued, stay tuned ...//

Revision [1165]

The oldest known version of this page was created on 2007-06-22 20:43:53 by MarioKleiner [First bits of text written, much more to do...]
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