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Portable audio recorders tests
  • Vitaliy_KiselevVitaliy_Kiselev

    This is topic only about tests that include two or more different recorders, use specific topics for test including only one recorder

  • 8 Replies sorted by
  • trevmartrevmar

    @sherwood Agreed- I always use (at a minimum) the FFT mode of SoundForge to examine the noise floor and distortion of a recorder, although these days most of the top-flight units tend to be pretty good. Microphones themselves can be quite a different proposition, however. I tend to stick with the Rode mics where noise floor is an issue. But the all-in-one recorders are so handy and lightweight, those are what I tend to carry around... :)

    Here are typical Sound Forge FFT plots from one of my tiny Yamaha Pocketrak 2G recorders in 16bit mode :)

    Noise_floor_5.jpg
    1680 x 1026 - 167K
    Distortion_6db_10L.jpg
    1680 x 1026 - 142K
  • sherwoodsherwood

    "In any case, maximizing the dynamic range is not the goal. Recording your subject with acceptably low noise is the goal."

    In practice, actually, it's both. But I'd agree that the pursuit of dynamic range at the expense of a noisy floor (caused by either poor mics, preamps or both) is not desirable. The Zoom H4N is a decent, usable device for certain things, and a bargain at the price. However, the Zoom's design is inherently cumbersome (hey, waddya want for $250?) and the mic preamps are far too noisy for the very things you'll have to record over and over again in a professional/serious project: dialogue, room ambience, foley etc. Apropos, these tests would be much more informative if they included extended segments of recorded silence.

  • Vitaliy_KiselevVitaliy_Kiselev

    @trevmar
    @balazer

    I think it is best to move to H1 topic.

  • trevmartrevmar

    @balazer Nonsense? Oh well - I do my best, based on professional audio experience accumulated over 40 years, based on my many designs for low-noise preamps, audio and digital processing units, and etc. Hopefully the information will be of use to somebody :)

    And yes, if I had an ISO setting maximizing dynamic range on my camera - say ISO 100, for example, I would do my best to adjust shutter, aperture and lighting to try and hit that sweet spot of ISO 100. I think there are many here who would do the same :)

  • balazerbalazer

    Trevmar, stop repeating nonsense. A gain setting of 37 on the Zoom H1 minimizes its equivalent internal noise. But dynamic range is a much different thing that also depends on the microphone, its sensitivity, max SPL, internal noise, and on quantization noise.

    In any case, maximizing the dynamic range is not the goal. Recording your subject with acceptably low noise is the goal. If I told you the GH2 had some particular ISO setting that maximized the camera's dynamic range, would you always use that ISO setting? Of course not. You don't want to just maximize the range. You need to fit your subject within the range. Restricting yourself to one gain setting means you will sometimes have underexposure or overexposure.

  • trevmartrevmar

    The Zoom H1 has a 'sweet spot' when the recording gain is set to "37". Any values lower or higher reduce the dynamic range. I am not sure where the H4N has least noise, but I do know that the Zoom audio chain is pretty good, especially on the H1 and H2N.

    http://zoomforum.us/viewtopic.php?f=15&t=15488&start=0

    http://taperssection.com/index.php?topic=146931.30

    http://www.avisoft.com/recordertests.htm

  • MirrorManMirrorMan

    quick test with a Rode NTG2, Tascam DR-100 and Zoom H4N running into the GH2 (with Pasadena Pulse hack setting)

  • bmorgan83bmorgan83

    The Marantz and Roland sound very clean. The Zoom seemed to have the most noise of the bunch, but the brightest high end. All very workable recorders though!

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