Logitech Wireless BH870 - Manual (Page 35)

BH870 Wireless Bluetooth® Headset User’s Guide 35
DSP
Digital Signal Processing.
Firmware
The software that is embedded in a hardware device, for example the BH870 Headset or base.
Hookswitch
The control mechanism that answers and hangs up a call on a telephone. When you place the handset in the telephone cradle, it
depresses the switch hook’s button and hangs up (puts the phone “on hook”).
Jabra® PC Suite
A collection of PC programs that enable you to configure your device, update its firmware, and control supported softphones using the
buttons on your headset. The Jabra PC Suite also includes drivers for various softphones on the market.
Narrowband audio
Narrowband refers to a situation in radio communications where the bandwidth of the message does not significantly exceed the
channel’s coherence bandwidth. It is a common misconception that narrowband refers to a channel which occupies only a “small”
amount of space on the radio spectrum. Narrowband can also be used with the audio spectrum to describe sounds that occupy a
narrow range of frequencies. In telephony, narrowband is usually considered to cover frequencies 300–3400 Hz.
Noise Blackout™
Developed by GN Netcom engineers, Noise Blackout™ applies a directional principle to noise cancellation, reducing only surrounding
noise and not distorting the user’s voice. The technology uses dual microphones to capture sound, intelligently filtering background
noise only. Other noise cancellation headsets cancel noise by cutting away audio frequency and reducing sound quality. Used together
with advanced DSP technology and Peakstop™ (audio shock protection) that monitors incoming audio volume, sound is balanced to
filter out background noise, leaving both sides of the call with a natural sounding voice quality.
Pairing
Creates a unique and encrypted link between two Bluetooth devices and enables them to communicate with each other. Bluetooth
devices will not communicate if they have not been paired.
Softphone
A piece of software for making telephone calls over the Internet using a general purpose computer, rather than using dedicated
hardware. Often a softphone is designed to behave like a traditional telephone, sometimes appearing as an image of a phone, with a
display panel and buttons with which the user can interact.
A softphone is usually used with a headset connected to the sound card of the PC, or with a USB phone.
Softphone driver
Establishes a control link between a softphone and your headset so you can answer and end, mute and un-mute, and hold and resume
calls using the buttons on your headset. The actual call control functions available from your headset depend on the capabilities of the
softphone and the headset model.
USB Bluetooth Adapter
Sometimes also called a dongle. A PC must have a Bluetooth adapter in order to communicate with other Bluetooth devices. While some
desktop computers and most recent laptops come with a built-in Bluetooth adapter, others require an external one. Bluetooth wireless
technology allows multiple devices to communicate with a computer over a single adapter.
Wideband audio
Sometimes also called HD Audio, this is an audio technology used in telephony. It extends the frequency range of sound travelling over
telephone lines, resulting in higher quality voice transmission. The range of the human voice extends from 80 hertz to 14,000 hertz.
Traditional, or narrowband telephone calls, limit audio frequencies to the range of 300 to 3400 hertz. Wideband audio eliminates the
majority of bandwidth limitations and transmits in the range of 30 hertz to 7000 hertz or higher.