Eric,
Here's my TetraMic cal:
sens 0.5 0.3 0 0.4 ; W capsule sens
vsens 0.2 0.5 0 0 ; XYZ
EQ 0.7 0 0.4 0 ; cap EQ
EQfreq 120 0 160 0
EQbw 300 0 200 0
W -8.3 ; cardioids -7.7dB Mk4 -14dB
X
Y 0
Z
I have no idea what the numbers represent but your EQ F, W and G are way
different to mine.
Without knowing what they represent there's no way to know if it is significant.
Bill
On 17/03/12 10:40 a.m., Eric Carmichel wrote:
Greetings Everyone,
First, thanks to all who read or responded my previous posts--everyone's help
and insight was appreciated.
Second, as I continue my cochlear implant research, and creating virtual
listening environments for 'real-world' testing of hearing-impaired listeners,
I have made recordings of various places using my Core-Sound TetraMic. Now I
have recordings using the TetraMic along with a TASCAM DR-680 and an Earthworks
calibration mic (for analyzing levels and spectral content), but I've
encountered a problem using the VVMic software. Len M. (of Core Sound) has been
good to respond, but the problem is vexing. I've tried contacting David M. of
VVMic fame, but no luck thus far getting a reply from him. The software works
fine with A- (raw) or B-format files as long as I don't use the calibration
files supplied with my TetraMic (these are the *.IIR files). I am hoping
someone will look at the numbers below and compare them to their TetraMic cal
files. I realize the files are unique to a given microphone, but if numbers are
missing or far from what appears normal, this
would suggest a problem with the cal files and not the software. Not all of
the columns or rows are filled in, but that's the way they appear in VVMic for
TetraMic. I could manually enter these numbers in the EQ settings, but I'm not
sure whether that would fix the problem because the numbers may be outside of
normal ranges. When using the cal files, the processing is quite slow, and the
resulting wav files, when viewed in a basic DAW (time-amplitude window), show a
wild, exponential-looking function that shoots off of the window. Note: The
wave file doesn't appear like a clipped signal.
Many thanks for any help here (or maybe somebody knows how to get in touch with
David McGriffy?).
Best regards,
Eric
Cal values shown below (and I hope the formatting stays intact when viewed in
email):
LFU RFD LBD RBU
Gain W 1.6 1.6 0.0 1.8
Gain X 0.0 2.5 2.0 2.8
Gain Y 0.0 2.5 2.0 2.8
Gain Z 0.0 2.5 2.0 2.8
EQ F 4500 1 1 1
EQ W 1.5 15.9 15.9 15.9
EQ G 4.5 4.0 2.0 5.0
W -5.0
X 0.0
Y 0.5
Z 0.0
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