[futurebasic] Re: [FB] Re:Setting sound recording gain (FB2)

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From: Paul Bruneau <paul_bruneau@...>
Date: Tue, 26 Oct 1999 08:27:34 -0400
Yuck, that sounds very frustrating. Sorry I don't have anything more
helpful for you.

One thing to note: Starting with the PMac 61/71/81 (but I don't know
which machines after that), Apple included a gain control setting.
Apparently the amp that is controlled by this setting is quite poor
quality, and I have read over and over that if you want to keep the
quality up, avoid setting the gain higher than zero (this allows the
unamped signal to pass through unmolested).

Best of luck,


David Cottrell wrote:
> >Can you define "built to emulate the apple mic"?
> >
> >The Apple mic has an amplifier inside it, driven by power received from
> >the extra extra long mini plug that probes deep inside to connect to
> >that extra power source.
> >
> >Basically, I would say that since Apple's mic works for you, and the
> >other mic doesn't work for you, suspect the other mic before you worry
> >about the OS or the machine.
> >
> >PB
> My device has these features of the Apple mic. The problem is it works on
> systems < 8.0 and on a range of machines. It does not work on B&W G3 with
> OS 8.6. I can also take a machine on which it is recording perfectly,
> upgrade the OS, and it stops working.
> There must be something else to the apple mic's which OS's > 8.0 (actually
> I suspect it is OS8.1) are sensitive to which I am not emulating in the
> custom hardware, but I have no idea what it is. the difficulty is that it
> is a hardware OS version interaction thing, some combinations work others
> don't, but I need a software solution which works on all platforms and
> current OS's.
> I've spent a day testing this, the problem is not simple.
> David
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