Roland BOSS DIGITAL RECORDER MICRO BR - Manual (Page 122)

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Specifications
MICRO BR: Digital Recorder
● Tracks
Track: 4
V-Track: 32 (8 V-Tracks per each Track)
* Up to 2 tracks can be recorded simultaneously, and up
to 4 tracks can be played back simultaneously.
● Useful Capacity
SD memory card: 32 M–1 G bytes
● Data Type
HiFi (MT2)
STANDARD (LV1)
LONG (LV2)
● Audio Data Type (MP3 Mode)
MP3 (192 kbps, 44.1 kHz)
MP3 (128 kbps, 44.1 kHz)
MP3 (64 kbps, 44.1 kHz)
WAV (44.1 kHz, 16 bit)
* The MICRO BR can play the MP3 in bit rate range of
64 kbps–320 kbps.
● Signal Processing
AD Conversion:
24 bit+AF method (GUITAR IN, onboard mic)
24 bit (LINE IN/MIC)
DA Conversion: 24 bit
* AF method (Adaptive Focus method)
Adaptive Focus is a unique Roland/BOSS technology
that allows the signal noise (S/N) ratios of AD and DA
converters to be vastly improved.
● Sample Rate
44.1 kHz
● Frequency Response
20 Hz to 20 kHz
● Recording Time (conversion in one
track)
* The above-listed recording times are approximate. Times
may be slightly shorter depending on the number of
songs that were created.
* The above number is the total for all the tracks that are
used. If each of the four tracks contain an equal amount
of data, the length of the resulting song will be
approximately 1/4 of the above.
* The memory capacity (recording time) decreases when
the MP3 file etc. exist in the memory.
● Recording Time (conversion in MP3
mode, Stereo)
* The above-listed recording times are approximate. Times
may be slightly shorter depending on the number of
MP3/WAV files that were created.
* The memory capacity (recording time) decreases when
the track data (Song) exist in the memory.
Specifications
Memory
Card
Capacity Data type
HiFi (MT2) STD (LV1) LONG (LV2)
32 MB 15 min. 18 min. 23 min.
64 MB 31 min. 38 min. 47 min.
128 MB 64 min. 76 min. 96 min.
256 MB 128 min. 154 min. 192 min.
512 MB 257 min. 309 min. 386 min.
1 GB 502 min. 604 min. 755 min.
Memory
Card
Capacity MP3 WAV
64 kbps 128 kbps 192 kbps
32 MB 65 min 32 min 21 min 2 min
64 MB 131 min 65 min 43 min 5 min
128 MB 265 min 132 min 88 min 12 min
256 MB 531 min 265 min 177 min 24 min
512 MB 1065 min 532 min 355 min 48 min
1 GB 2081 min 1040 min 693 min 94 min
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