[iyonix-support] Re: Audio In cycling volume
- From: Andrew <aw29009@xxxxxxxxx>
- To: iyonix-support@xxxxxxxxxxxxx
- Date: Sun, 09 Mar 2008 06:32:56 -0700 (PDT)
In message <4d55c97b4ef4c1457d4f.rogerarm@xxxxxxxxxxxxxxxxxxx>
Roger Darlington <rogerarm@xxxxxxxxxx> wrote:
> On 9 Mar 2008, Andrew wrote:
>> I recently sampled a tape via Audio In and playing it via Iyonix
>> SoundCon the volume cycles between loud and soft. Has anybody found
>> this happening their own samples? I'm pretty sure I didn't play with
>> the volume during the recording.
>>
>
> No, never seen that happen.
>
> Were you listening to the tape at the same time as you 'recorded' it
> on the Iyonix?
>
Intermittently I think.
> I assume that when you play the tape itself, the volume does not ramp
> up and doen?
>
No.
> If you were not listening to the tape as you recorded it on the
> Iyonix, then it could be the tape itself. Tape can weave up and down
> the tape replay head, causing the volume to go up and down. It is a
> very common effect. Particularly if you have not played the tape for
> some while, or did not wind and re-wind the tape before playing it
> through the Iyonix. [But moreover, this effect can be recorded onto
> the tape, if the tape weaves up and down the recording head as you
> recorded it onto the tape in the first place. - I assume this is not
> the case. But it could still have been weaving up and down the
> playback head when you were sampling it on the Iyonix - and most
> likely was].
>
I've tried it again and it seems okay playing through with SoundCon
although if you try to skip through in segments by clicking on the
green progress bar it alternates between inaudible and audible, or
seems to.
The volume "cycling" seemed irregular and infrequent but made the
sample far too loud at intervals. Perhaps it was tape weaving as you
say but if I tried to multitask the first time I wonder if that would
have caused the effect?
> Are the volume transitions sharp or smooth? If tape weave is the
> culprit, the volume transitions are probably smooth, akin to rather
> faster Radio Luxembourg fades.
>
No they were definitely sharp.
> Do the 'fades' correspond to rotation of either tape spool
> revolutions? If so, tape weave is most likely the culprit (unless, of
> course, it is on the tape itself, in which case it will always do it.
> But I assume not, otherwise you wouldn't have asked here).
>
>
The tape is okay but it's a recording from the RiscPC headphones
socket of an MP3 recording whose file I've unfortunately deleted. So
there's a lot of hiss on the tape. The gain on AudioIn was about 75%.
However I'm confused - the Microphone setting in Configure is on
"mute" but I still get a recording yet the instructions for audio in
say for Gain:
"This allows finer control over the volume of the microphone input.
This setting is independent of the Microphone volume set
using
Configure, which only applies to the Mix inputs."
So what is gain and what does the Microphone volume in Configure do?
Andrew
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