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The
Stereo Mode
radio buttons let you choose between
Mono
and
Stereo
recording. Mono recordings
use half the space of stereo recordings. When recording mono audio the left microphone input is used
as the main source.
The
Record Bandwidth
radio buttons give you six bandwidth options. Lower bandwidths use less
space than higher bandwidth recordings. Higher bandwidth recordings, however, allow higher
frequencies to be recorded adding to the fidelity of the recorded audio. 5 KHz is the recommended
setting for voice recordings.
Each time a selection is made the
Estimated Recording Capacity
area is updated showing the
estimated amount of time the SSABR G2 unit will allow for recording. This area will allow you to
configure your SSABR G2 for the optimal recording quality while meeting your recording length
requirements.
The correct record mode to use will depend upon the quality of audio you require. The compression
used will affect the signal-to-noise ratio (SNR) of the recording. Both the no-compression and the loss-
less compression have the highest SNR (96 dB). Because the loss-less compression gives the same SNR
as no-compression and twice the record time, it is recommended that loss-less compression is used.
Stereo recordings of speech are often much easier to understand than mono recordings. This
improvement is because of the fact that we (as human beings) hear in stereo and are used to discerning
audio in noisy environments. Stereo recordings, however, require twice as much space for storage.
The record bandwidth will affect the amount of high-frequency audio in the recordings. The more
high-frequency information in a recording, the crisper it will sound. Increasing the bandwidth will
allow more high-frequency information to be stored, but this increase requires more storage space. 5
kHz bandwidth is the best compromise between quality and record space and will ensure that all the
speech recorded is preserved.
The recommended settings are Best Quality (Loss-less Compression), Stereo, 5 kHz (Voice Quality).
These settings are the best balance between record quality and record time.
