[Top] [All Lists]

Re: Roland/Edirol R-1 recorder

To: <>
Subject: Re: Roland/Edirol R-1 recorder
From: Ryuji Suzuki <>
Date: Mon, 3 Jul 2006 12:32:28 EDT
I bought a Roland (Edirol) R-1 (now discontinued) and tested for its
responses. Here's some summary.

High frequency response begins to roll off at around 19 kHz, 1 dB down
at 20 kHz, 2.5 dB down at 21 kHz, and about 6 dB down at 22 kHz. The
antialiasing filter is not sharp enough; 23.8 kHz sine wave is recorded
as 20.3 kHz (i.e., 44.1-23.8 kHz) at about -20 dB. Similarly, 24.1 kHz
is recorded as 20 kHz at -25 dB, and 25.1 kHz as 19 kHz at -45 dB.

Low frequency response is flat down to about 10 Hz, and -6 dB at about
3 Hz.

The device has analog limiter, but it can be turned off. (No trick

With the "input level" turned all the way up, the device clipped at
about -12 dB Vrms (about 250 mVrms).

The above data were obtained with sine sweep fed to the right channel
of the device through its "line in" (3.5 mm stereo plug), recorded at
44.1 kHz sampling with 24 bit quantization, with limiter off, all sound
effects turned off, and saved into WAV files. The WAV files were
analyzed in MATLAB.

Just in case someone needed this much info...

Ryuji Suzuki

<Prev in Thread] Current Thread [Next in Thread>
  • Re: Roland/Edirol R-1 recorder, Ryuji Suzuki <=

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the Bioacoustics-L mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU