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Software News   Software News : New emu10kx and CMI8738 drivers and new Mixer
   posted by DaveAE on 19-Sep-2005 20:38:31 (10361 reads)
Recently uploaded to OS4depot:

- emu10kx v6.2: This may solve the freezes that people experienced when playing sound together with using ethernet (eth3com). People have transferred several GB of data without a freeze, so it is looking good. An IRQ timer that was set to generate 1000 interrupts per second was changed to 80Hz. It seems that the VIA686B PIC isn't too happy about handling many IRQ's/second.



- CMI8738 v5.12: Can solve some sound crackle issues, especially after Grim Reapers and other situations where only a stop and start of playback could 'solve' the crackling.

- Mixer v1.15: Daniel Westerberg has added extensive ARexx support to Mixer and solved some bugs. Please read the accompanying ARexx.readme for more information.

Kind regards,

Davy Wentzler
    

STORYID: 2584
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DaveAE 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 10:59:13
#21 ]
Super Member
Joined: 21-Mar-2003
Posts: 1091
From: The Netherlands

What's a sound map?
Anyway, I'll ask Martin, since I only port the emu10kx driver. But I heard the line-in problem before. You are using an SB Live or Audigy2?

Last edited by DaveAE on 20-Sep-2005 at 11:01 AM.


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BlackNinja 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 11:23:58
#22 ]
Regular Member
Joined: 2-May-2005
Posts: 123
From: Germany

@DaveAE



I use a Soundblaster audigy z2. The LineIn functions only with the version 5.16 of the emu10kx.audio of driver. All other versions 6.1,6.2 do not run any longer.

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DaveAE 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 12:13:39
#23 ]
Super Member
Joined: 21-Mar-2003
Posts: 1091
From: The Netherlands

Ok. Martin probably changed something. He can't test it since he doesn't have an Audigy2. I'll see what the changes are.


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BlackNinja 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 12:46:13
#24 ]
Regular Member
Joined: 2-May-2005
Posts: 123
From: Germany

@DaveAE

>I'll see what the changes are.


Can your repair the problem?

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DaveAE 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 12:58:41
#25 ]
Super Member
Joined: 21-Mar-2003
Posts: 1091
From: The Netherlands

Quote:
Can your repair the problem?

I'll see what I can do, ok? Since it worked before, I'm sure we'll find out, either me or Martin.

Last edited by DaveAE on 20-Sep-2005 at 12:59 PM.


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BlackNinja 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 13:08:26
#26 ]
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Joined: 2-May-2005
Posts: 123
From: Germany

@DaveAE


Very well; -) Thanks and good luck!

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Anonymous 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 13:16:34
# ]



Hi DaveAE

I don't want to put too much work on you, but could you see if you can find
time to work on an updated Envy24TH driver for the TerraTec Aureon cards,
so that both CD/AUX and Digital In will work as supposed to?

 
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DaveAE 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 13:32:09
#28 ]
Super Member
Joined: 21-Mar-2003
Posts: 1091
From: The Netherlands

@Helgis

Do you have any equipment that has a digital out?


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DoodooHead 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 14:20:28
#29 ]
Cult Member
Joined: 8-Mar-2003
Posts: 641
From: Reno, Nevada, U.S.

@DaveAE

This is much better for me. I used to get lockups after about 25 minutes. It's been playing for 90 minutes with the new driver, so far so good.

Last edited by DoodooHead on 20-Sep-2005 at 02:47 PM.


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Anonymous 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 14:34:16
# ]



No, not currently, AFAIK, DaveAE. But it would be nice to know they are
working, if you know what i mean..

 
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DaveAE 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 15:06:54
#31 ]
Super Member
Joined: 21-Mar-2003
Posts: 1091
From: The Netherlands

@Helgis
Well, for me it's a matter of priorities. It's either spending time on eXtream or on a digital in that you don't use.


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Anonymous 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 20-Sep-2005 22:52:16
# ]



@DaveAE

Then spend time on eXtream We need eXtream audio!

Soon time to replace AHI with something brand new

 
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Samwel 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 21-Sep-2005 0:22:27
#33 ]
Elite Member
Joined: 7-Apr-2004
Posts: 3404
From: Sweden

@Davy

Quote:

Quote:
Btw the MIC boost tool you made for the CMI driver, couldn't this be incorporated

The GUI is auto-generated according to the soundcard. Adding an optional checkbox option is possible, but makes it complicated (layout etc.). Anyway, it should always be on IMHO.


I just saw that in Mixer 1.15 the Mic boost is incorporated as a volume slider.
This is good enough for me. I gather the boost is always ON and then you
use the slider or mute if you don't want any boost?!
Thanks!

Do contact Stefan, he's a really knowledgable guy in both the hardware and
software side. I'm sure he could also let you have a beta version of IBrowse to
test as it's one of the applications causing the most problems.

Best of luck to you!

Btw I'm going to do that test with dropped/delayed IRQ's as soon as I get some
time. And yes, I have a µA1-C!

Last edited by Samwel on 21-Sep-2005 at 01:36 AM.
Last edited by Samwel on 21-Sep-2005 at 01:30 AM.
Last edited by Samwel on 21-Sep-2005 at 12:23 AM.


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DaveAE 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 21-Sep-2005 9:31:53
#34 ]
Super Member
Joined: 21-Mar-2003
Posts: 1091
From: The Netherlands

Quote:
This is good enough for me. I gather the boost is always ON and then you

Not really, the CMI is a weird chip. The boost is only for monitoring and the slider is only for the recording gain. The recording gain doesn't affect the monitoring level. It's completely counter-intuitive.

Last edited by DaveAE on 21-Sep-2005 at 09:32 AM.


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Deniil715 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 21-Sep-2005 14:59:47
#35 ]
Elite Member
Joined: 14-May-2003
Posts: 4236
From: Sweden

@DaveAE

What interrupt timer was set to 1kHz and why, as it could work just as well at 80Hz?? Why 80Hz? Could it be set to 1Hz to minimized possible instabilities even further?

..just technically interested, that's all.....


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DaveAE 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 21-Sep-2005 15:27:00
#36 ]
Super Member
Joined: 21-Mar-2003
Posts: 1091
From: The Netherlands

Ok, when the programmer doesn't change the PlayerFreq, AHI uses (mix) buffer sizes that can hold 1/50th of a second of data. So, every 1/50th of a second, the audio needs to be mixed. Therefore you need at least IRQ's 50 times a second. Some programs change the PlayerFreq during playback (usually mod players), so by setting a 1000 Hz timer, it can deal with large modifications in the PlayerFreq. The interrupt service routine checks if it needs to start mixing a new buffer or not.
All my drivers trigger an interrupt when a new buffer is being played by the soundcard, which results in 50 IRQ's a second if PlayerFreq was 50Hz. My drivers don't deal with changing PlayerFreq's during playback, although they can handle different PlayerFreq's (= buffer sizes) when they are set before playback. Note that most audio chips don't have an extra timer onboard.

I set it to 50 Hz initially, but that caused some weird noises. Martin also told me that that was probably not gonna work. So I tried 80 and that worked so I stuck with it.

You could theoratically set the PlayerFreq to 1 Hz, but volume and panning changes (and parameters for real-time effects in AE4 for instance), would only be done once a second. That would make smooth fades impossible for example.

Hope this helps.


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Deniil715 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 21-Sep-2005 17:06:36
#37 ]
Elite Member
Joined: 14-May-2003
Posts: 4236
From: Sweden

@DaveAE

Interesting


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DaveAE 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 21-Sep-2005 18:22:20
#38 ]
Super Member
Joined: 21-Mar-2003
Posts: 1091
From: The Netherlands

Quote:
I use a Soundblaster audigy z2. The LineIn functions only with the version 5.16 of the emu10kx.audio of driver. All other versions 6.1,6.2 do not run any longer


The LineIn works fine here. You just don't hear it when it's recording. Can you confirm this and confirm that you do hear something in 5.16 while recording?

Last edited by DaveAE on 21-Sep-2005 at 06:22 PM.


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Georg 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 21-Sep-2005 18:50:01
#39 ]
Regular Member
Joined: 14-May-2003
Posts: 451
From: Unknown

Quote:
I set it to 50 Hz initially, but that caused some weird noises. Martin also told me that that was probably not gonna work. So I tried 80 and that worked so I stuck with it.


We had that issue with the AROS AHI Driver for the hosted/Linux version, too. It's because of how AHI works internally. With 100 Hz it works, but there's still the thing that you need bigger buffers then you would with higher rates. There may be unlimited cpu power. It will not help (high level interface using double buffering) you will still get underruns. Despite double buffering and buffer being in theory big enough.IIRC AHI gets into a situation where replying of requests goes like this:

[reply] [reply] [reply] [] [reply reply] [reply] [reply][][reply reply]...

Instead of

[reply][reply][reply][reply][reply][reply]...

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BlackNinja 
Re: New emu10kx and CMI8738 drivers and new Mixer
Posted on 21-Sep-2005 22:52:14
#40 ]
Regular Member
Joined: 2-May-2005
Posts: 123
From: Germany

@DaveAE



With 5.16 I can hear the LineIn and AudioCd. With all other versions that does not function any longer. I test the LineIn with AmithlonTV and CDPLAY for audio. I am surprised that that still nobody was noticeable. Or do I have only a Soundblaster Audigy z2?

Last edited by BlackNinja on 21-Sep-2005 at 11:05 PM.

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