Thank Jeremiah and Walt,
This gives me better clues as where to start solving the problem as I
could have done meselve.
Nick
Jeremiah Moore heeft op zaterdag, 24 mei 2003 om 22:04
(Europe/Amsterdam) het volgende geschreven:
> Nick: You might search around for audio problems on mac OSX. I seem
> to recall reading somewhere that there were system problems with
> audio playback on certain versions of OSX in which there were random
> volume fluctuations or something of the sort.
>
> I tried searching apple knowledge base and didn't find anything...
> http://www.info.apple.com/
>
> Maybe I read about it on http://www.macintouch.com ?
> -jeremiah
>
>
>
>> Nick Gordon wrote:
>>> Hi,
>>>
>>> I use the iMic to transfer an MD recording to my cube G4. The iMic i
>>> think is picking up a sorts of disturbance and shielding it whit
>>> alluminium foil does not help anything. After packing it and moving
>>> it
>>> around a bit it picks up just the same level of noise as before.
>>> When I listen sound back from the minidisk it sounds acceptable to
>>> me,
>>> using a pair of SoundMan binaurals the sound has tremendous space
>>> and
>>> fairly natural sound where the low selfnoise is acceptable to me for
>>> now.
>>> But I can't get it into the cube. Also I use Macromedia soundEdit to
>>> record it to disk. This program has some trouble under OSX.2 as it
>>> is
>>> producing al sorts of dips to the speakers where these dips are not
>>> really in the SoundEdit file for as I play it back whit QuickTime
>>> there
>>> are no dips.
>>
>> I've not used one of the cubes. It sounds to me like you may be
>> getting
>> interference from other events going on in the cube. You can try
>> shutting down all other programs and processes you can. But I'm not
>> sure
>> that's going to entirely do it. I've noticed with some sound playing
>> software on my regular G4 that disk accesses and such like can create
>> something like what you describe. My regular sound editing programs,
>> Peak and Spark XL do fine, but some of the CD playing software
>> exhibits
>> this. And I'm running OS 9.2, unix (which is what OSX is) can create
>> more interrupts than the mac OS does.
>>
>> As you noted QuickTime does better, probably because it's processes
>> have
>> a higher priority suppressing the interrupts. If stopping all the
>> processes you can does not do it, you may simply have to give up on
>> SoundEdit for playback. Or check with the company and see if they have
>> any suggestions.
>>
>> Part of the problem seems to be that the main processor is involved
>> more
>> in sound playing than it used to be. It used to be you could crash a
>> AV
>> mac and the sound would keep right on playing because it was not going
>> through the processor. Not true anymore. And probably especially so
>> with
>> the cube, which is a cut down form of a mac.
>>
>>> Can anyone confirm these issues? I figured that if the recording was
>>> okee it would not be such a big step anymore to get the sound on the
>>> road, but I guess i'm wrong. How can I bypass and overcome these
>>> obstacles.
>>
>> If the problem is in input, then the use of a external A/D in the form
>> of one of the USB devices may help. And the use of a regular sound
>> program instead of iMic may help too. Peak is what a lot of mac folks
>> use, including myself. I'm currently transferring digitally from my
>> Portadisc via a Roland UA-30, so don't know the current issues with
>> analog transfers. I have done analog inputs with my G4 in the past
>> using
>> Peak with no problems.
>>
>> Walt
>
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