SM3BAT User Guide
Managing Deployments
page
53
BIOACOUSTIC MONITORING SYSTEMS
In most applications, there is no reason to use sampling rates faster than twice the
frequencies of interest. The majority of frog vocalizations are under 4 kHz and
need only be sampled at 8 kHz while most bird vocalizations are under 8 kHz and
need only be sampled at 16 kHz (with the exception of some high-pitched
warblers who sing at 12 kHz and need to be sampled at 24 kHz).
The following tables estimate the recording time in hours for different
combinations of memory capacity, sample rates, and channels:
Estimated Recording Time in Hours [Mono (1 channel)]
96,000 48,000 44,100 32,000 24,000 22,050 16,000 8,000 4,000
8 GB 11.6 23.1 25.2 34.7 46.3 50.4 69.4 138.9 277.8
16 GB 23.1 46.3 50.4 69.4 92.6 100.8 138.9 277.8 555.6
32 GB 46.3 92.6 100.8 138.9 185.2 201.6 277.8 555.6 1111.1
64 GB 92.6 185.2 201.6 277.8 370.4 403.1 555.6 1111.1 2222.2
128 GB 185.2 370.4 403.1 555.6 740.7 806.2 1111.1 2222.2 4444.4
256 GB 370.4 740.8 806.4 1111.2 1481.6 1612.4 2222.4 4444.4 8888.8
Estimated Recording Time in Hours [Stereo (2 channels)]
96,000 48,000 44,100 32,000 24,000 22,050 16,000 8,000 4,000
8 GB
5.8 11.6 12.6 17.4 23.1 25.2 34.7 69.4 138.9
16 GB 11.6 23.1 25.2 34.7 46.3 50.4 69.4 138.9 277.8
32 GB 23.1 46.3 50.4 69.4 92.6 100.8 138.9 277.8 555.6
64 GB 46.3 92.6 100.8 138.9 185.2 201.6 277.8 555.6 1111.1
128 GB 92.6 185.2 201.6 277.8 370.4 403.1 555.6 1111.1 2222.2
256 GB 185.2 370.4 403.2 555.6 740.8 806.2 1111.2 2222.2 4444.4
If you enable compression, you can typically increase recording capacity by 40%
(compression rates vary with sample rates and site-specific ambient sound levels).
NOTE
: Compression consumes more processing power and offers decreased value as
memory card prices fall while capacities continue to grow. For most wildlife recording
projects, we recommend .wav format.
7.2.3
Mixed Acoustic and Ultrasonic Recording
Estimating mixed recording schedules can be very difficult. Use the
SM3
Configurator
to determine battery longevity. The software understands the
power used in both recording modes and can easily generate a calendar
showing you a good estimate.
Summary of Contents for sm3bat
Page 6: ......
Page 71: ...SM3BAT User Guide SM3BAT Specifications page 65 BIOACOUSTIC MONITORING SYSTEMS ...
Page 75: ...SM3BAT User Guide SM3BAT Specifications page 69 BIOACOUSTIC MONITORING SYSTEMS ...
Page 76: ...SM3BAT Specifications SM3BAT User Guide page 70 BIOACOUSTIC MONITORING SYSTEMS ...
Page 77: ...SM3BAT User Guide SM3BAT Specifications page 71 BIOACOUSTIC MONITORING SYSTEMS ...