Marty Michener wrote:
>
> At 02:16 PM 3/17/02 -0500, Walt wrote:
> >Many of the sound editors can do the waveform as in some forms of
> >detailed editing you might be editing that by drawing down at the sample
> >by sample level. Most don't generate it as you play, but generate this
> >on opening and run a marker line along it while playing. No real math is
> >involved in generating the waveform display.
>
> Walt:
>
> Cool Edit Pro, on PCs, set to only slightly low res settings (resolution
> 256 bands, window width 100%, Style: Log plot energy range 120 dB) it
> keeps up fine with both making a spectrum and recording an incoming
> 44.1kHz, 16 bit stereo signal. The software automatically scrolls to the
> left, while making new chunks of spectrum (0 to 22 kHZ) at the cursor on
> the right. Every now and then a single spectrum-chunk gets by it,
> especially on startup. During "play to end" with the visible window set
> to 10 seconds, it also scrolls very smoothly on playback for the full
> length of the cut (> 10 minutes).
>
> I make many recordings in the spectrum mode this way, to see the spectrum
> on input, both channels, recognize incoming bird sounds with high pitched
> components my hearing sometimes misses. This is on a year-old $900 Win
> box, Pentium III 700 MHz. Smooth as silk. You can probably get one used
> for less than $500 now, and the software is $ 275?
What FFT size are you using?
Walt
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