Edirol R1 MP3 sample recordingsGeneral note.... These recordings (except where noted) are field recordings. No attempt at optimal mic placement was made, so many sound off mic. The R1 contains two omni directional mics, which understandably pick up lots of room ambient. However, they sound fairly smooth and the bass is not rolled off, which puts them miles ahead of most hand held devices intended for field recording.
Except for the WAV file, the files on this page are original R1 files, processed only to shorten them and add fades. As a result, they have actually been MP3 encoded twice. Once by the R1 and once after editing and re-saving. No other processing has been done. Level is as-recorded.
This recording was made in a large auditorium that seated about 3000 people. The sound system was very good but I was up front and the speakers were well above me. As a result I picked up a lot of the room in addition to the music. The drums were maybe 50% direct sound. MP3 recording, at 192Kb bitrate.
Jam session, moderate sound level
This recording was made in one end of an approximately 15' by 30' room. The R1 was placed on the edge of a foosball table, approximately 5 to 10 feet from the instruments. Note that this was a very informal hammered dulcimer jam session and not everyone knew the tune.... don't expect perfection! MP3 recording, at 192Kb bitrate.
Jam session, louder sound level
This recording was made in an approximately 20' by 30' carpeted room. The recorder was placed on the carpeted floor under my instrument. Again, this is a rather informal hamemred dulcimer session. MP3 recording, at 192Kb bitrate.
Studio recording session, from the R1's internal mics
This recording was made in my home studio (AKA the living room). The R1 was about 5 - 8 feet from the dulcimer and the piano while we recorded a take for a CD a friend of mine is making. No attempt was made to place the R1 for best sound.... I just put it on a chair and hit RECORD. I did not cut the beginning of the recording so you can hear the room sound and mic preamp noise level. MP3 recording, at 192Kb bitrate.
Studio recording session, from studio mics
This is the same take as the recording above, but through the recording console and studio mics (AKG-414s and Shure SM-81s). Recorded as 44.1Khz 16 bit and transferred to 44.1KHz MP3 at 192Kb bitrate.
Outdoor ambient sounds
Recorded outdoors on my deck. Birds and traffic noise. Analog mic gain control at about 80%. No other processing or gain change. This one is direct from the R1.... not re-encoded. MP3 recording, at 192Kb bitrate.
Outdoor ambient sounds (louder)
Same as above, but processed to raise the level. MP3 recording, at 192Kb bitrate.
German music with.... whips
OK, this one probably requires a bit of explanation. I like German music and took my R1 to a practice session where a group was getting ready for a dance and music competition. One event is four guys cracking whips in time with the music (in this recording they were merely practicing whip cracking, not trying to stay in synch). The recording was made in a large conference room, about 40 feet square. The musicians were in one corner and I was in the other corner (ie., at least 40 feet away). If you turn the volume up, the whip cracks are almost as painful in this recording as they were live. Illustrates the good transient response of the mics, audio section and the encoder. MP3 recording, at 192Kb bitrate
Noise floor recordings
These 10 second WAV format recordings were made to demonstrate the noise floor of the analog section of the R1. The mic input was terminated in all cases with 2X 6.8K carbon film resistors (the stated input impedance of the R1 mic section). Note that there is significant DC offset for the first several seconds. When examining the noise floor, use the last several seconds, after the DC offset has settled out. These files are exactly as recorded by the R1.
Noise floor, zero record level
Recording made with the mic input terminated with 6.8K X 2. Record level set to zero. According to Wavelab, the RMS noise floor is -80 DB. 16 bit WAV file, unprocessed (approx. 1.7MB).
Noise floor, full record level, mic type = DYN
Recording made with the mic input terminated with 6.8K X 2. Record level set to 100%. Microphone type set to DYN. According to Wavelab, the RMS noise floor is -73 DB. 16 bit WAV file, unprocessed (approx. 1.7MB).
Noise floor, full record level, mic type = CND
Recording made with the mic input terminated with 6.8K X 2. Record level set to 100%. Microphone type set to CND. According to Wavelab, the RMS noise floor is -68 DB. 16 bit WAV file, unprocessed (approx. 1.7MB).
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