Roland Edirol R-09HR High-Resolution WAVE/MP3 Recorder

The Edirol by Roland is usually an excellent little performer, whether while using on-board stereo microphone and also external microphones. I bought it primarily to record videotaped interviews because the audio arrangement on usual camcorder is not perfect for this purpose. I record a 'clap' at the start and end of each interview and sync the Edirol audio up while using video in post output.

The audio playback quality is a great deal of better than the average music and the R-09HR will be light and small enough to do that role as nicely, so I ditched my music.

Note that SDHC cards ARE supported even though a quick read from the manual implies SD simply, it's buried in the footnote. No case, mic adaptor or tripod mount is included with the unit and the provided 'stand' is flimsy along with insecure.

I was concerned previous to purchase that Roland does not list specs for signal-to-noise and also dynamic range (basically similar thing). Usually this implies that the figures are embarrassing. Upon arrival I tested it myself. I shorted the mic and line inputs therefore and got the using noise floor figures:

Mic reviews (low gain setting) -72dB beneath clipping.
Mic input (high acquire setting) -67dB
Line reviews -76dB

Method: record 40 seconds of audio (16 tad / 48KHz WAV), shift to PC and evaluate by replaying in Sony Seem Forge. This eliminates the Edirol's analog playback circuitry, therefore the results would probably become worse if measured on the analog line output. This process includes any noise introduced from the PC but, as the WAV files were in no way decoded, this should not be a componant. I muted each track as well as the sig/noise was unmeasurable (better than 90dB) in order that would seem to concur that. If anyone from Roland would certainly care to comment I am going to be interested.

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