That's true. However, now I know about mixers it may be more efficient
to buy four cheap Maplin microphones and leave them connected. The
idea is that I speak anywhere (main rooms) in the house and have my
words recorded. Like Beethoven's notebooks, but a vocal version! An
alternative might be to have a wearable, *discrete* wireless mic of
some kind, but whether this would always connect to the recorder
elsewhere in the house is debatable. Having cables instead of wireless
would obviate any problem on that score. I tried several years ago
with one of the first Sony voice-operated digital recorders, but it
lasted about five minutes beyond the guarantee period. Ruddy thing
cost me around £130!
I suspect that you will be unhappy with the results of having all the
mics paralleled and always active. Since they will be distant from
your mouth you will have to crank the gain up high to get a reasonable
response. But that will make them very susceptible to noise pickup,
so you will be triggering your sound-activated recording on all kinds
of incidental sounds like the fridge and furnace. The wearable
wireless mic sound like a much better idea in this regard, but much
depends on how "discrete" it needs to be. A boom mic right in front
of your lips would be ideal; a mic clipped to your shirt may
false-trigger from picking up too much body motion noise.
I'd recommend that before you proceed, you use a single mic and
run some tests in a single room. See if you can find a happy
compromise between gain and noise pickup, then go from there.
Data AcQuisition And Real-Time Analysis
Scope, Spectrum, Spectrogram, FREE Signal Generator
Science with your sound card!