David, can you please give us all a description of your the listening
situation you are in when you judge these two recordings? Headphones,
loudspeakers, distance between the loudspeakers, size of room e.t.c?
Klas
At 22:25 2014-05-25, you wrote:
> > Hello, Another recording, today, this time with two mkh 30/30 in
> Faulkner array.
> >
> > 140525T0600Z1001FAULKNER ARRAY, 12DB GAIN, HPF 250HZ
> https://soundcloud.com/freitojos/140525t0600z1001faulkner-array-12db-gain=
-hpf-250hz
>
>
>Jose,
>
>This was nowhere near the clarity of your last track. The birds were not
>placed clearly in the sound image and the background sounded out of phase.
>The depth which I liked before was missing.
>
>This shows well the difference between volume difference stereo and time
>difference stereo. The ideal is the two combined, but most commercial ster=
eo
>is mixed with pan pots as volume difference stereo.
>
>Theoretically anything full left or full right with a mic spacing of 200mm
>and a sample rate of 48KHz is shifted by about 28 samples. However, the ea=
r
>has to have a sharp sound edge to detect this distance and most birdsong
>does not have sharp enough edges.
>
>The loud call in the recording sounded a bit to the left, but on analysing
>it, this was because it was about 3-4 dB louder on the left track. The
>Faulkner array should have had equal levels on all incoming sounds, except
>for very close ones. Possibly some interaction with a windshield or
>windshield affected the levels.
>
>Even the best mics do not have flat frequency responses off-axis, even
>before being fitted into a windshield, which adds internal reflections. An=
y
>spaced array will also have irregular responses off axis, but the ear is
>tolerant to these. Don't spend big money on frequency responses. :-)
>
>Try a 45-45 degree array with the two fig-8 mics 170 to 200 mm apart which
>will give you both volume stereo and time difference stereo. This is the
>theory with the ORTF array.
>
>David Brinicombe
>
>
>
>
>------------------------------------
>Posted by:
>------------------------------------
>
>"While a picture is worth a thousand words, a
>sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.
>
>Yahoo Groups Links
>
>
>
Telinga Microphones, Botarbo,
S-748 96 Tobo, Sweden.
Phone & fax int + 295 310 01
email:
website: www.telinga.com
|