VT UltraMic-384 Hardware Operation Manual
www.virtins.com 42 Copyright © 2018-2020 Virtins Technology
Virtins Technology
Glossary
Description
Sampling
frequency
(sampling rate)
[
Hz/Khz
]
The rate or frequency at which an analogue signal is analyzed to determine acoustic delicacies.
The higher sampling frequency produces less difference in forward/backward sounds.
Quantization bits [bit
depth][
bit
]
The number of quantization bits helps determine how much data is required to save a
record when digitizing analog signals (such as voice).
Bit rate [
kbps
]
A Bit Rate indicates how many data bits are transmitted per second. A 128 kbps file, for
example, uses 128 kbits per second to encode data. The smaller the bit rate you select, the
worse the quality, and the smaller the size it will output. The sound quality varies depending
on digital audio compression algorithms (such as MP3),
even if the bit rates are the same. Even if the bit rates are the same, sound quality varies
depending on the digital audio compression algorithm
(such as MP3).
Linear PCM format
A linear PCM format is used so that no data gets lost due to compression and original sound
stays intact. This format is used for music CDs (CD-DA).
Memory (media)
This is a storage system that do not lose the data stored on it even when the power is removed.
In this manual, it refers to the built-in flash memory and the SD card.
Encoding
Encoding is a process in which the information obtained from a source is converted into data
according to certain rules. Or it is a process in which data is converted from one format to
another (such as audio compression) according to certain rules.
Firmware
Software that make the microphone to work.
BLE
Bluetooth Low Power. A wireless communication system that allow the VT UltraMic-384
to work as unattended recorder.
For customers in Europe
mark indicates that this product complies with the European requirements for safety, health, environment and customer
protection.
This symbol [crossed-out wheeled bin WEEE Annex IV] indicates separate collection of waste electrical and electronic
equipment in the EU countries.
Please do not throw the equipment into the domestic refuse. Please use the return and collection systems available in your country for
the disposal of this product.
This symbol [crossed-out wheeled bin Directive 2006/66/EC Annex II] indicates separate collection of waste batteries in the
EU countries. Please do not throw the batteries into the domestic refuse. Please use the return and collection systems available in your
country for the disposal of the waste batteries.