background image

Page

 

6

 

The speakers mount like any standard external speaker and are 

powered by any 12 – 24 vdc unregulated power source.  You can 

use the optional bhi external power supply or in-vehicle

 

adapter. 

 

The NES10-2 MK3 and NES-5 come as standard with a 2m audio 

lead terminated with a 3.5mm mono jack plug ready for immediate 

use.

1.3   Audio DSP Noise cancellation.

The bhi DSP processes the incoming audio signal and then differenti-

ates the speech from the noise.  The unwanted noise and interference 

are then attenuated to leave only the speech.

The following diagrams are taken from actual audio signals and 

illustrate how the audio signal is being processed.

Original signal.

Speech with a lot of 

background noise

Speech        Noise

Figure 1. Audio signal before processing.

Page 27

NEDSP1062 Amplified DSP 

 

modules.

Amplified version of the low level audio 

NEDSP1061 modules, except they feature 

an integral 2.5W rms power amplifier. 

They are ideally suited for fitting inside 

a loudspeaker or older tranceiver. They 

feature single button operation with selectable 

4 or 8 levels of noise reduction.

Order code 

NEDSP1062-KBD

The bhi Radio Mate compact keypad for the 

Yaesu FT817, FT857 and FT897 

enables the user to get the best out 

of their radio.  It has been designed to 

make many of the common functions 

quick and easy to use.  The keypad does 

this with a number of fast, effective short-

cuts.  40 memories and frequency nudge mode 

included.

Radiomate.

DSP Noise Cancelling as Easy 

as  1-2-3

1 - Plug in Audio

2 - Connect Loudspeaker

3 - Connect Power

Easy to use amplified in-line 

DSP noise cancelling module.  

Use with a speaker or head

-

phones.  Full user guide, audio lead 

and Fused DC powe lead supplied

ANEM MKII

 “

Noise

 Away” 

Содержание NES-5

Страница 1: ...Operating Manual DSP Noise Cancelling products 1030 103D Issue H 04 10 Page 32 DSP Noise Cancelling products bhi email sales bhi ltd com www bhi ltd com Tel 44 0 845 2179926 Fax 44 0 845 2179936 bhi L...

Страница 2: ...in the European Union and other European countries with separate collection systems This marking shown on the product or its literature indicates that it should not be disposed of with other house hol...

Страница 3: ...mation Page 30 Every noise eliminating speaker comes with a 12 month guarantee against defective materials and workmanship If you do have a problem then please refer to the troubleshooting section 4 I...

Страница 4: ...munications especially amateur radio two way radio and HF radio It is suitable for all bands and is easy to set up and control via the microprocessor controlled pushbuttons on the front of the speaker...

Страница 5: ...are fully adaptive to any change in noise levels and interference On the NES10 2 MK3 the noise cancelling can be switched on or off and there are 8 user selectable noise cancellation levels whilst the...

Страница 6: ...essing Page 27 NEDSP1062 Amplified DSP modules Amplified version of the low level audio NEDSP1061 modules except they feature an integral 2 5W rms power amplifier They are ideally suited for fitting i...

Страница 7: ...inputs for low level signals Need to Connect more than one piece of equipment to your bhi Noise Eliminating Speaker or module Switch box front view Switch box rear view The NEDSP1061 modules again fe...

Страница 8: ...1 MKII now comes with 20 more audio and a new filter select knob Noise cancellation 9 35dB Audio input output Line level input output Output volume control Input level control with LED Power on off wi...

Страница 9: ...he sensitivity level of the NES10 2 MK3 so that there is no distortion and the speaker is not being overdriven Page 24 Audio Adaptors See tables below for details Adaptors for connecting NES10 2 MK3 t...

Страница 10: ...ptors see section 5 This socket can also drive another loudspeaker When a connector is inserted into this socket the internal speaker of the NES102 MK3 is muted Page 23 Optional Extras The following i...

Страница 11: ...the mounting plate to prevent it from marking surfaces Page 22 See FAQs on our website for further information and help What adjustments do I need to make during use Apart from changing the filter lev...

Страница 12: ...move to the next step If the problem is cured try removing the previous ferrite s Shorten ing the power lead may also improve the situation Figure 8 Power lead suppression Fit another ferrite at the o...

Страница 13: ...o lead adapters are available from bhi A2 metre audio extension lead is available if your equipment is more than 2m away from the NES10 2 MK3 see section 5 5 Set the rotary noise cancellation filter l...

Страница 14: ...y control on the NES10 2 MK3 fully counter clockwise or thereabouts Now tune your radio communications equipment until you have a good clear signal with good volume The volume from the speaker is low...

Страница 15: ...radio communication equip ment on and that you have a signal for the speaker to process To verify this remove the audio connector from the external speaker socket on your equipment Check that the LED...

Страница 16: ...DC power 12 24V dc 500mA Size 110 x 65 x 55mm Weight 200gms Page 17 3 4 NES 5 basic set up procedure and operation 1 Connect the supplied in vehicle power lead bhi power supply or a suitable power ad...

Отзывы: