peak hold on spectroscope / sweeping frequencies

    Leigh Marble
    May 06 2006 | 8:21 pm
    It seems there should be an easy way to do this, but I'm stuck: I want a readout like spectroscope~ (in spectrogram mode), but where the peak frequencies are held until reset. This would give a clear picture of the frequency response, when sweeping frequencies through an object/circuit/room. Ala Spectrafoo, or FuzzMeasure.
    Checking the possible messages you can send to spectroscope, I don't see any peak holding ability... anyone got some clever ideas?
    Thanks, Leigh
    • Trond Lossius
      May 06 2006 | 10:32 pm
      Hi,
      here is one solution using the FTM library. It should be possible to recreate this using Jitter instead. FTM can be downloaded here:
      http://recherche.ircam.fr/equipes/temps-reel/ftm/index.html
      Best, Trond
    • Leigh Marble
      May 06 2006 | 11:49 pm
      Thanks for that idea. Unfortunately for me, the current version of FTM only runs on OS X 10.4, and I'm still at 10.3. Does anyone have an older, compatible copy they would be so kind as to email me?
      Cheers, Leigh
    • Trond Lossius
      May 07 2006 | 7:45 am
      There is info on how to install FTM 1.7.5 on OS 10.3 at the FTM wiki:
      *http://tinyurl.com/qrl9n
      Best, Trond
    • sfogar
      May 07 2006 | 7:53 am
      Leigh,
      there's a workaround for this...
      Norbert Schnell (IRCAM) said:
      ------------------------------------
      Hi friends of 10.3.9,
      Just take the FTMlib.framework and copy it into /Library/Frameworks and it should work. It works for me!
      ------------------------------------
      Not tried yet...
      All the best
      Alessandro Fogar
    • Leigh Marble
      May 07 2006 | 8:46 am
      Thanks for these tips, I missed them. I've got this patch working now on a 10.3.5 system.
      Cheers, Leigh
    • Trond Lossius
      May 07 2006 | 9:04 am
      While you are at it, you might also want to check out the help patch for gpr.peaks. It is sort of related, tracking the N current peaks (frequency and amplitude) in the specter.
      Best, Trond