Weird Sound Artefacts

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What steps will reproduce the problem?

1. Install Soundflower 1.4.3 with Soundflowerbed
2. Use (2ch) as Main Output, so I can use the Volume controls on my Audio DJ 8
3. In Audio Setup, I use 96kHz and 32 Bit (well actually the Soundcard does
only 24 bits, but there is only this choice) It does not seem to matter
which channel is used on the Audio Hardware.

What is the expected output? What do you see instead?

After a while, the Sound is completely muted or I can hear some strange
humming distorted nois which sound like a Buffer Overrun. In fact, with a
smaller Buffer, the Artifacts can be heard sooner and generally with a
higher pitch. For example, with a Buffer Size of "2048" it takes about one
hour before the Artefacts appear (seems to be a fixed amount of time), with
a buffer size of "64" its only a matter of minutes.

All in all, this Bug reminds me of "Issue 21" - so this might not be
related to my Audio Hardware

I can "fix" the Bug by just selecting any Buffer Size when the error
appears, but of course it will reappear a certain amount of time (depending
again on Buffersize).

What version of the product are you using? On what operating system?

I use Soundflower 1.4.3 in Mac OS X 10.5 

Please provide any additional information below.

Audio Hardware: Audio DJ 8 from Native Instruments

Original issue reported on code.google.com by kuderm...@alphanull.de on 18 May 2009 at 4:27

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Add me to the list of people that are willing to pay someone to actually fix
this. "Don't have huge amounts of cash tos pare, but something."

Original comment by ryanrhe...@gmail.com on 19 Dec 2010 at 9:41

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I don't have lots of money, but I'm willing to pay for this also! Right now I 
could pay $ 100.

Please, SoundFlower developers, charge any amount for soundflower, but make 
something decent that really works!

Original comment by felip...@gmail.com on 19 Dec 2010 at 2:30

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/sign

I would also be paying for a fix ....

Original comment by kuderm...@alphanull.de on 19 Dec 2010 at 2:55

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I believe fixing this issue involves the use of the kAudioUnitSubType_Varispeed 
AudioUnit, in case anyone is interested in pursuing it...

Original comment by 74obje...@gmail.com on 14 Jan 2011 at 2:58

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I have the same problem when a play a flac 6 channels 24 bits 96Khz.
But when a play another flac : 2 channels i haven't artefact

Original comment by chooha...@gmail.com on 12 Feb 2011 at 5:04

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Wow, I was really on the edge of my seat reading through the comments hoping 
that someone was going to come up with a patch for this. Not sure I could 
provide the detail necessary to satisfy a project member with my situation but 
I will say:

TONS OF MUSICIANS ARE TRYING TO FIGURE OUT HOW TO GET AI (ie MOTU) CLEAN SIGNAL 
ONTO QT VIDEO THAT INCLUDES AN AUDIO ACCOMPANIMENT (ie, backing tracks) RUNNING 
ON THE DESKTOP.

I am playing my bass guitar along with Band-In-A-Box and shooting iSight video 
into Quicktime X (the new dumbed down release...lol).

- MacBk Pro 2.4Ghz, Snow Leopard 6.2
- Aggregate Device Soundflower (1.5.2) + MOTU Mk3 Hybrid (USB for now)
- Bass ( and sometimes lav mic) ===> MOTU w/48k sample rate
- Quicktime X  iSight vid window w/Aggregate device selected for sound
- Band-In-A-Box runs on the desktop (BIAB)
- Sound Prefs ===> input and output set to Soundflower

Problem 1) I have been having the same problem with the static that turns into 
a high pitched hum after some minutes of operation. (HOLY sheiss, 
Update......see below).

Problem 2) Took me a while to realize this, but since I was only soloing on the 
accompaniment, I did not realize that the bass signal had a slight delay on it, 
maybe 200ms or so. When I cut a groove track the other day, I thought: "does my 
groove suck that bad?...answer: no). I suppose that sending the MOTU through 
Soundflower puts in the delay..not sure.

UPDATE: Problem "1" solved by selecting "Soundflower" as Clock Source for the 
MOTU in Aggregate Device setup window.

SECOND UPDATE: Problem "2" Bass sound delay solved by lowering buffer size in 
SFB menu to "64".....I am going to do further research on this to the best of 
my ability. But the delay is gone and the groove is now back to smokin'.

The object has been to get the accompaniment from the BIAB to appear in the 
MOTU through the USB so I can shoot various video projects, such as 
instructional or gear reviews, etc, but to also include some high-quality 
accompaniment from the BIAB running on the desktop.

So Soundflower should be a great thing for this. I basically have figured this 
out for the most part, but like others after a few minutes the static would pop 
in and then I would have to reset (re-sync clocks?) from the SFB menu to get 
rolling again. In fact, as I am typing, I tried something different and IT"S 
WORKING!!!!!!!! ...........I have the BIAB rolling, a QT vid window open, and 
some setup windows open to try some adjustments stuff. I went into the Audio 
Device setup and on the MOTU, decided to select "Soundflower" as the Clock 
Source instead of "Internal" and UNREAL, the sucker isn't tweaking out on me 
now. When the MOTU has "Internal" set as clock source, the sound flakes in 4 
minutes flat (with a buffer of 64 (to solve delay issue, but WAS 512 before)). 
It has been rolling with "Soundflower" as Clock Source for 24 minutes with no 
flaking.....UNREAL, I have reached the promised land after months of tech 
torture.

Here is a Soundflower/MOTU/QT/BIAB video I shot between static blowouts the 
other day after problem 2 was "solved" (temporarily...? don't know yet for 
sure):

http://www.youtube.com/watch?v=OeBP7ek9hwg

Original comment by kwg...@yahoo.com on 16 Feb 2011 at 7:55

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