Remove noise and interference to hear clearly...for a stress-free listening experience!
High-performance audio processing
Easy to use with ‘real-time’ DSP noise cancellation. This compact in-line DSP noise cancellation unit is designed primarily for use with headphones, although it can drive a small passive speaker. For louder audio powered speakers will be required.
Works with both mono and stereo signals:
The bhi Compact In-Line is a lightweight DSP noise cancelling unit made from tough impact resistant black ABS plastic, making it suitable for portable use. The unit is easy to install and accepts either a mono or stereo input signals and you can connect either headphones or loudspeakers to the output, so you can enjoy your listening experience straight away. This intuitive microprocessor controlled unit has two rotary encoders with push buttons that perform all the functions, allowing you to change settings quickly and easily in ‘real-time’ to suit your current operating conditions.High-performance audio processing:
The powerful high-performance audio processing system and unique DSP noise cancelling algorithm can distinguish speech from noise and interference within the audio signal. This results in clear intelligible speech under most conditions and it works particularly well on weak signals.Compact In-Line Connections:
The Compact In-Line can be powered from a separate 12V DC supply using the supplied fused DC power lead (a plug-in wall-wart DC power supply requires a 2.1mm to 1.3mm adapter) or from two AA alkaline or NiMH batteries for portable mobile use. Input connections are made via the separate 3.5mm speaker level and line level audio input sockets. The output socket can drive a pair of stereo headphones, a mono loudspeaker, or a pair of powered stereo speakers.Simple control of all functions:
The Compact In-Line functions are microprocessor controlled via two rotary encoders with push buttons. The unit can be adjusted in ‘real-time’ to suit your noise conditions. The ‘Power/Volume’ control switches the unit on and off and adjusts the audio volume. The ‘Filter Level’ control adjusts the filter level in ‘real-time’ allowing you to quickly respond to changing conditions. Push the filter button to hear the difference! You can also select between a single mono signal or stereo mode. The Compact In-Line is especially useful for portable/mobile use as it can be powered by 2 x AA batteries. The unit is suitable for use on all radios and receivers and Software Defined Radios (SDR’s), including Elecraft and FlexRadio products.Read this excellent write-up of this unit by Jock Elliott KB2GOM on the SWLing post online click here
Boost your audio
Why not further boost your receive audio and use one of our 10W parametric EQ20 units EQ20 with your Compact In-Line? Simply connect the ‘Headphones Out’ signal into the EQ20 input and connect your passive speaker or headphones to the EQ20 output. You will be able to tailor the audio to suit your hearing. This is especially useful if you suffer from hearing loss.Features
- Latest BHI DSP noise cancellation technology 9 to 40dB
- Powerful high-performance audio processing system
- Ultra low latency of 32mS
- Processed speech is much clearer and more intelligible
- Simple and easy to use with ‘real-time’ control of all functions
- Use with headphones, passive speaker or powered speakers
- Mono or stereo inputs
- LED overload indication
- Ideal for portable use, DXing & special event stations
- Over 40 hours battery life from 2 x AA Alkaline or AA NiMH batteries
- Size: W125mm x L70mm x D37mm
- Unit made from tough impact resistant black ABS plastic
Specifications:
Power:
External power: 8 to 16V (Nominally 30mA, 350mA peak max)
Reverse polarity protected
Internal batteries: Type: AA x 2 (Alkaline or NiMh recommended)
Reverse polarity protected
Low battery indication threshold: 2.1V ±0.1V
Low battery indication: LED colour changes to red.
End-of-life threshold: <1.5V
Life: 40 hours typical (Alkaline or 2500mAH NiMh).
Auto power-off: 60 minutes if input signal < 60mVpk-pk
Auto power-off can be disabled if required.
Audio Inputs
Speaker level in: Stereo or Mono
Input impedance: ~7 Ohms
Max Input Power Handling: 2 Watts RMS per channel
Max Input Amplitude: 3.9 Vpk-pk
Line level in: Stereo or Mono
Impedance: 6.7 k Ohms typical
Max Input Amplitude: 1.6 Vpk-pk
Overload indication: LED flashes for at least 3 seconds
Audio Outputs
Headphone out: Stereo or Mono
Impedance: > 4 Ohms (can also be used as line level output).
Max Output Power: 0.2 Watts RMS per channel
Volume levels: 16 steps in 3dB increments.
DSP Noise Filtering
Powerful high performance audio processor
Modes: Enabled / Disabled (DSP filter off)
Levels: 8
Noise suppression: 8 to 40dB
Tone suppression: up to 65dB
Ultra low latency of 38mSDimensions and Weight
Size 125 x 70 x 37mm
Unit weight 0.125kg
Case made from tough impact resistant black ABS plastic
