Peter,
Some brief answers. I meant that the mid range noise *could* sound
environmental, so is more acceptable in a recording. It was probably a
bit of both, but whatever, removing it would introduce artifacts which
are worse.
> The best I can do to reassure myself in the meantime is try to get a
> better "silent" recording.
The cushion recording was fine and told me what I wanted to know about
the HF hiss.
If you or anyone else is interested in editing <EQcurves>, mine are on
http://www.stowford.org/sounds/eqcurvesadd.txt
but take a backup first.
< I don't understand what they do.
<
< They were:
< - Algorithm: spectrum
< - Function: Hanning window
< - Size:512
< - Axis: linear
I don't expect software writers to have a perfect grasp of English.
:-) The Power Spectrum [Analyze - Plot Spectrum] is a spectrum, the
one in the waveform selection is actually a spectograam aka audiogram
aka sonogram.
A Hanning window just rounds off the the sample values and is the
usual one.
Size is the sample size for each plot. A high value gives better
frequency detail but on the audiogram it is slower and gives a lot of
horizontal spread.
Axis is the frequency scale linear or log.
BTW I find the arrow down Waveform (dB) plot more useful as you can
see what levels you have better.
David
David Brinicombe
North Devon, UK
Cogito cogito ergo cogito sum - Ambrose Bierce
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