4. Quick installation
4.1 Hardware installation
• Connect the USB plug to the computer.
4.2 Software installation
For PC:
• Insert the EHSMonitor software CD into the CD drive.
• Providing autorun is enabled the CD will begin automatically.
• if it does not: Press Start/run/ browse/ - The drive where the CD can be found.
• Double click on the file named eMic4all_Setup – and follow the instructions shown.
For Macintosh:
• Insert the EHSMonitor software CD into the CD drive.
• On the pop-up window which will appear, find EHSMonitor pkg and double click on it.
5. E-mail headset control box functions
Control box has 2 buttons (“Microphone”) and (“Ear”) and headphones volume control
. The actual function of
each button is determined by the software driver (EHSMonitor). The volume control is used to adjust the hardware loudness of the
headphones. It has no influence on the system software volume control.
6. EHSMonitor software manual
6.1 Software overview
6.1.1 EHSMonitor
With EHSMonitor it is possible using only one button to record file, save it, convert to MP3 and even to generate an e-mail
message with the recorded file attached or upload record to web server.
6.1.2 LAME MP3 encoder
MP3 is a format for compressed audio storage. MP3 uses psychoacoustic filters to remove sounds that are inaudible to the human
ear, as well as other methods to compress the audio information. Thus there could be discernable difference between the original
and encoded audio data (a great depends on the encoding parameters). Modern MP3 encoders are very flexible and allow you to
set a lot of parameters, affecting the encoding speed and the output file quality. EHSMonitor uses LAME as default encoding
engine. LAME is quite fast (encodes faster than real time on a PII-266 at highest quality mode) and provides a very good sound
quality. For more information, please visit LAME official site at http://www.mp3dev.org. If for one or another reason you do not
like LAME, you can use any other MP3 encoder that supports command line interface. See
“Advanced settings”
section for
details.
6.2 E-mail microphone recording
6.2.1 Recording
E-mail headset allows you to record and E-mail sound files by pressing only one button. The rest (MP3 encoding, generating of
the eMic-message, uploading it to the eMic4all server etc.) will be done for you automatically. Recording is always first made to a
temporary file. Thus, even if the recording is finished abnormally (power failure, etc.) the recorded data would not be lost
(however such file would not be recovered automatically). It is possible to assign one of five pre-defined functions to any of the
microphone buttons (since it is assigned, it becomes a function of E-mail headset). That means that it is even possible to assign the
same function to the both E-mail headset buttons. There are two ways to use the E-mail headset buttons:
Hold down.
Recording starts right after the button is pressed down and lasts while the button is held pressed. When the button is
released, recording stops.
Click.
Recording starts after the button is pressed and consequently released. Recording stops when the button is pressed for the
second time. Recording can be paused and resumed as many times as needed by pressing and releasing the button different from
the one that has started the recording.
