microphones of the cellular or the fixed telephones, the best results
are obtained using a portable audio console and dynamic
microphones of good quality.
For details on VQR, please consult the information available in the
section “Technical Documentation” on our Web site.
3.6.1 Using the VQR
The VQR processing can be enabled or bypassed pressing the
VQR button on the front panel.
The user adjusts the amount of processed signal using the knobs
“Low band” and “Hi Band”. Both controls even have an ample rank
of work, making possible the processing in telephone signals whose
bandwidth is very restricted.
Low band
Manages the level of lows added to the original signal. With the
fader closed there is no reconstruction for low frequencies.
The level of reconstruction, or amount of low frequencies that is
possible to add to the signal, depends on the audio quality of the
telephone line (all communications don’t transmit the same
bandwidth) and the telephone or microphone used at the other end.
Obviously, same results are not obtained using the small
microphone of a cellular telephone or a microphone of good quality
with a portable console. at least quality has the transmission
(smaller bandwidth) smaller will be the action of VQR processing.
Make sure to listen to the processing in the main monitors of the
control room, to avoid an excessive reinforcement of lows in the
processed signal; that can take place if you are monitoring the
communication using small headphones or loudspeakers of bad
quality.
SOLIDYNE
Telephonic Hybrids
Page 27
