Audio DSP and Equalization Devices

Audio DSP and Equalization Devices from bhi, MFJ and West Mountain Radio are ready to transform your radio listening experience. Highly sophisticated digital signal...

Audio DSP and Equalization Devices from bhi, MFJ and West Mountain Radio are ready to transform your radio listening experience. Highly sophisticated digital signal processing units are capable of removing noise from the audio. Graphic and parametric equalizers allow you to tailor the sound for the operating conditions and for your ears. Parametric equalizer units from bhi include Bluetooth® versions that enable your speakers to play the audio from your laptop or mobile device. Each of these devices delivers dramatically improved audio to your speakers or headphones for highly intelligible and enjoyable radio operations....

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bhi DSP Devices

bhi Ltd designs and manufactures digital signal processing (DSP) noise cancellation products including inline units and modules. They are some of the best electronic noise elimination devices currently available! bhi DSP Devices remove unwanted background noise and interference from noisy voice and radio communication channels to leave clear, intelligible speech. Used in a number of radio-related and voice communication markets, all bhi products incorporate unique, patented DSP technology to enable clear communications in noisy environments. Shop DX Engineering for your bhi products! Their company name is bhi - all lower case. bhi Limited is a UK business entity. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information.

4.66 out of 5 stars ( 47 )

$185.99

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$291.99

bhi ParaPro EQ20 Parametric Equalizers

bhi ParaPro EQ20 Parametric Equalizers give you the opportunity to customize the sound of your received audio and boost the audio power to your speakers. Delivering a total of 20 watts of audio amplification, EQ20 Parametric Equalizers are excellent for any radio. Adding the ability to tailor the received audio for your speakers AND your ears is extremely helpful for improving intelligibility, and increasing the enjoyment of listening to your radio! Four EQ20 model variations provide your choices, from either a basic Parametric Equalizer audio amplifier unit, or a model that includes DSP filtering or Bluetooth input capabilities, or both! BHD-EQ20 – ParaPro EQ20 Parametric Equalizer BHD-EQ20B - ParaPro EQ20 Parametric Equalizer with Bluetooth BHD-EQ20-DSP - ParaPro EQ20 Parametric Equalizer with DSP BHD-EQ20B-DSP - ParaPro EQ20 Parametric Equalizer with DSP and Bluetooth These units are also perfect on mobile radios or for boosting the audio performance of older rigs with lower audio output. A parametric equalizer allows user is able to adjust any specific part of the frequency range to be selected and adjusted in strength. This gives you greater flexibility and accuracy to set the audio to suit your own hearing. Additionally, the Digital Signal Processing (DSP) versions of the EQ20 remove unwanted noise from received signals by applying a special audio-processing digital algorithm that seeks the noise and eliminates it! The Bluetooth versions of the EQ20 provide additional functionality to your speaker system, including listening to audio from a mobile phone, laptop or digital device equipped with Bluetooth. Here are the features of the bhi EQ20 Parametric Equalizers: * Parametric equalizer lets you shape the audio to suit your hearing * Accepts mono, stereo or two separate audio channel inputs via 3.5mm jacks * Class-D high-efficiency audio amplifier eliminates large heatsink * 10W audio per channel * Use with your passive speakers * 4mm banana jack or phono jack output connections * 3.5mm stereo headphone output (Class AB) * DSP versions have two independent channels of bhi noise cancelling * Bluetooth versions add wireless input for listening to a Bluetooth enabled mobile device or laptop * Easy to use controls * Microprocessor controlled functions * Signal input overload feature * 12V DC operation (3A) At a total of 20 watts of power these audio amplifiers drive larger communications speakers to their full potential. The EQ20 Parametric Equalizer controls afford audio tailoring that helps to compensate for receiver or speaker weaknesses. Choose models with the exceptional bhi DSP noise reduction technology and Bluetooth input for a truly winning combination! Get the most from your receiver and companion speakers. Order bhi ParaPro EQ20 Parametric Equalizers from DX Engineering and give your speakers some serious drive!

4.09 out of 5 stars ( 23 )

$295.99

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$499.99

bhi DSP Noise Cancelling In-Line Modules

bhi DSP Noise Cancelling In-Line Modules eliminate noise and interference to let you hear more clearly! This new audio DSP unit cleans up noisy signals and works on most radios and receivers. It comes with the latest bhi DSP noise cancelling technology—which brings improved audio quality to the listener when operating in noisy conditions across all radio bands. The audio is clearer and more intelligible as a result. It's very easy to connect the In-Line Module between your radio and external speaker with the included 3.5mm male mono patch cable. This model delivers plenty of clean, noise-free audio with its 5W audio amplifier. The speaker output is muted when headphones are connected to the mono headphone output jack. When the unit is switched off, the audio bypass feature routes the signal directly through to the loudspeaker. bhi In-Line Modules provide simple control of all features. Their three-position switch turns the unit on and switches the noise cancellation on and off. The "Status" LED illuminates red when power is applied and changes to green when the noise cancellation is active. Set the radio AF gain to provide an audio input level that does not flash the overload LED. An audio output control adjusts speaker or headphone levels. Also included are a User Manual and four small rubber feet, plus the previously mentioned 3.5mm male mono patch cable for connection to your radio and a fused 2.1mm DC power lead. This unit may be powered by a user-provided 10 to 16V DC power supply or optional wall supply, BHD-PSU12-2A-WW. bhi In-Line Module features and specs: - Eight noise cancelling levels, 8 to 40dB - Tone reduction up to 65dB - 5W audio amplifier - Audio input overload indicator - Status LED indicates power and DSP operation - Audio bypass feature when switched off - Speaker output connection 3.5mm mono jack - Headphone 3.5mm mono jack - DC Input: 2.1mm center positive, requires 10 to16V DC @ 500mA min. - Dimensions, WHD: 5.315 x 2.559 x 1.811 in. (135 x 65 x 46mm) - Weight: 10.6 oz. (0.3kg)

4.62 out of 5 stars ( 13 )

$275.99

SOTAbeams WOLF-100 WOLFWAVE Advanced Audio Processor

SOTAbeams WOLF-100 WOLFWAVE Advanced Audio Processor is a powerful tool for demanding communications applications. Adaptive DSP noise reduction, audio band pass filtering, Morse decoding and automated hearing loss correction are only four of the tasks this incredible device can accomplish. A rotary-encoder, with push-to-set control, accesses adjustments and simple menu system selections on the attractive OLED screen, which also provides a spectral display of the real-time audio passband. WOLFWAVE uses a high performance 32-bit ARM Cortex M7, the highest performance processor of the energy-efficient ARM M-series. This fantastic DSP processing power is paired up with a 20-bit CODEC (analog to digital - digital to analog conversion) and a 1.6 watt amplifier for superb audio performance. So easy to use and so amazing to hear, this in-line audio unit simply connects to the headphone jack of any radio. Connect your headphones or an external speaker to WOLFWAVE and transform your radio listening experience. Here are some of the very useful, menu-selectable functions and features of WOLFWAVE: -Fully adjustable audio band pass filtering from 50 Hz to 5 kHz - instantly adjustable for voice, data and CW -Bright, clear, real-time audio spectrum display to see what's happening in your radio passband -State-of-the-art adaptive DSP noise reduction with 100 levels plus advanced control functions -Morse Decoder – CW Reader added in firmware update – click "More Details" for the WOLFWAVE Firmware page link -Adaptive DSP tone eliminator gets rid of annoying carriers, but leaves the CW -Age-related hearing loss correction using ISO 7029:2017 median hearing-loss curves for males or females – menu selectable -One-touch bypass function to instantly hear the comparison improvement by WOLFWAVE -Memories to easily store and recall your favorite settings -Audio test generator including two-tone test mode, sine, square and triangular wave -Experimental CW regenerator to enjoy noise-free CW QSOs -On-screen help and menu system that is so easy to use -Tuning/Overload dual color LED indicator for easy tuning and input level adjustments -User updatable firmware by USB to keep up with the latest WOLFWAVE developments -Separate speaker and headphone outputs are excellent for exhibition stations -Speaker output: 1.1 Watts @ 10% THD [speaker output must not be grounded -Headphones operation supported with 5Vdc USB power from laptop or USB power pack -Full output power for speaker operation achieved from 7 to 18 Vdc external input -2.1 mm jack for DC power input (13.8 Vdc power supply sold separately) -Low quiescent current drain of only 60 mA; battery-friendly! -Small size (WHD) 4.13 x 3.15 x 1.06 in. (105 x 80 x 27 mm) -Lightweight: 3.5 oz. (140 g) -WOLFWAVE is supplied with one USB A to USB micro-B data power cable and one Audio patch cable with 3.5mm plugs Click "More Detail" for additional information on all of the features of this groundbreaking device. Order your WOLFWAVE Advanced Audio Processor from DX Engineering – the exclusive SOTAbeams North America dealer.

4.44 out of 5 stars ( 9 )

$409.99

Heil Sound PRAS-EQ Parametric Receive Audio System Equalizer

The Heil Sound PRAS-EQ Parametric Receive Audio System Equalizer is a state-of-the-art audio system that enhances the sound of Amateur Radio, shortwave, commercial, and CB receivers. The PRAS-EQ allows radio operators to modify, shape and improve the audio output of their receivers using three separate equalization controls. Midrange frequencies are the most critical for achieving clear voice articulation in receive audio, especially for those with hearing deficiencies. The PRAS-EQ allows operators to have unique control over these important frequencies. First, operators can adjust the parametric midrange filter from 400 Hz through 4 kHz, with the recommended sweet spot being at 2.5 kHz. In addition, operators can control the presence of these midrange frequencies plus or minus 15 dB. Combined with a low-frequency filter down to 160 Hz, and a high-frequency filter up to 6 kHz, the Parametric Receive System provides operators unparalleled control and quality of their receive audio. The PRAS-EQ has three audio Inputs; a standard XLR, a 1/8 in. (3.5mm), and a 1/4 in. mono 8 ohm input that can accept the 8 ohm external speaker output of any radio. Three audio Outputs on the PRAS-EQ are one balanced XLR and one 1/4 in. (6.35mm) outputs on the rear panel and one 1/8 in. (3.5mm) output on the front panel for recording audio. The PRAS also has two built-in headphone amplifiers with separate level controls and dual 1/8 in. headphone outputs. The PRAS Parametric Receive Audio System is intended to be used with the specially designed Heil HPS-5 Powered Speaker, now sold separately. The line level output of the PRAS-EQ unit may be used with any powered speaker. Order the Heil Sound PRAS-EQ Parametric Receive Audio System Equalizer from DX Engineering and restore clarity to your radio listening!

4.74 out of 5 stars ( 23 )

$269.00

West Mountain Radio CLRdsp ClearSpeech® Noise Reduction Processors

West Mountain Radio CLRdsp ClearSpeech® Noise Reduction Processors are designed to be installed between your radio and your favorite passive external speaker or amplified speaker. Complex DSP algorithms filter all of the noise content of the incoming signal and greatly attenuate or completely remove hum, hiss, vehicle ignition, and power line noise, as well as heterodynes. The result: the ability to hear voice and CW audio clearly, with over 85 percent of the noise removed. These units have a convenient volume-control knob that allows a user to adjust the speaker audio level for comfortable listening. This allows the radio's AF Gain control setting to be optimized for other uses, such as interfacing to a West Mountain Radio RIGblaster sound card interface. Features include: * Amplifier for speaker or headphone with volume control * ClearSpeech® adaptive DSP noise reduction for voice and CW * Recognizes intermittent nature of CW and allows it to pass noise-free * Adjustable noise reduction control * Tone control * 11W watt (into 4 ohms) power amplifier * Sturdy aluminum case--ideal for mobile operation, as well as home station * Powerpoles plug into any 12V supply * Plugs into the speaker or headphone output on the radio * 1/8 in. phone jack on rear can drive external 8 or 4 ohm loudspeaker or amplified computer speakers * On/off switch with green indicator LED * Red LED flashes to indicate digital overload clipping Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. You've heard about DSP and how it helps to get those DX QSOs in the log book. Now experience it first hand with West Mountain Radio CLRdsp ClearSpeech® Noise Reduction Processors from DX Engineering!

4.57 out of 5 stars ( 28 )

$219.95

bhi 5W DSP Noise Cancelling Speaker Retrofit Modules

bhi 5W DSP Noise Cancelling Speaker Retrofit Modules incorporate unique Digital Signal Processing (DSP) technology which can identify speech from within a noisy signal and can provide up to 40 dB of noise reduction over 8 filter levels and 65 dB of tone reduction. Easily retrofitted inside many types of extension speakers or older-style radios and transceivers, these modules come pre-wired and their onboard power amplifier allows them to be easily incorporated into existing equipment.

Not Yet Reviewed

$201.99

SOTAbeams LASERBEAM-VARI Digital Variable Bandwidth Audio Filter Module

SOTAbeams LASERBEAM-VARI Digital Variable Bandwidth Audio Filter Module - the perfect addition to your project or your existing radio. Unlike analogue filters, digital filters provide near-perfect characteristics. Because of the way that they are implemented, they are better than analogue filters in almost every way! LASERBEAM-VARI Modules been designed for ease of use. One simple control allows you to continuously vary the bandwidth or the center frequency of the filter. All settings produce the same great filters with flat pass bands and steep skirts. Whether you need passband tuning, filters for digital modes and APRS, low pass filters or CW filters, the LASERBEAM-VARI does it all in one compact module. Dial up EXACTLY the filter you need. •Bandwidth 200Hz - 3500Hz •Max Passband 200Hz - 3500Hz •Indicator outputs for tuning mode (bandwidth or center-frequency) •On board overload indicator •User-defined power-up filter settings •Two gain settings Great for all modes: SSB-CW-Digi-AM-NBFM. A single clickable rotary encoder provides the main functionality. Click to switch between variable bandwidth or center frequency. Store your favorite setting as a power-up default. Simple but very effective, this filter is continuously variable and always has near perfect characteristics unattainable with conventional analogue techniques. Kit includes: •filter module PCB (ready-built), •Bourns rotary encoder (6mm diameter shaft) , •3 x LEDs, •2 x 10 way headers, •7 resistors, 2 capacitors NOTICE: NO enclosure or instructions are provided. All construction data is online at SOTAbeams.co.uk Simple to use: the instructions are downloadable here. The instructions contain information to allow users to control the filter using a microcontroller. Example filters These plots have been made by testing a LASERBEAM-VARI using a professional audio spectrum analyzer (QuantAsylum QA400). Remember that the LASERBEAM-VARI can synthesize any bandpass filter that you want (200-3500Hz). Click on the links below to see the filters. •Typical SSB filter •Typical 200Hz CW Filter •Typical 200Hz CW filter but at 3kHz •Wide filter

5.0 out of 5 stars ( 1 )

$65.99

bhi Ltd Audio Cables and Adapters

bhi Ltd Audio Cables and Adapters provide easy connections to your gear. These are standard audio cables and adapters that make is easy to use your bhi DSP units or speakers. Plus, they can be used for any of your signal or switching applications. They work for audio, CW keying, amplifier keying... you name it! Most of us like to have these handy adapters and cables on hand, so add a few of these items to your order and be ready!

4.0 out of 5 stars ( 7 )

$42.99

SOTAbeams LASERBEAM DSP Filter Modules

SOTAbeams LASERBEAM DSP Filter Modules work much better at reducing QRM than mechanical or analog filters. SOTAbeams applies special algorithm-based software to create well-defined passbands with steep contours. SOTAbeams offers their General Purpose, CW and SSB filter modules with switchable passbands. For example, the CW module (SBM-LB-MODULE-CW) may be used with either a 550 to 850 Hz passband, or a wider 300 to 1300 Hz passband. You choose the passband based on your own band conditions. Their SSB module (SBM-LB-MODULESSB) features passbands of either 300 to 2700 Hz or 300 to 2400 Hz. SOTAbeams designers have determined that these passbands work very well for SSB voice filtering. They offer their General Purpose filter module (SBM-LB-MODULE-GP) to accommodate both CW and SSB. These modules have selectable passbands of 550 to 850 Hz and also 300 to 2700 Hz. In this way you may limit CW or SSB QRM that is outside the selected audio passband. Be advised that these modules are NOT of the plug-in style. To use them takes some knowledge and soldering skill. You will also have to add an enclosure, if desired, as well as external parts not supplied with the PCBs. As designed, these modules will drive typical "low power" earbuds all by themselves. They will also drive audio amplifiers or amplified speakers. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Are you tired of battling the QRM? Order SOTAbeams LASERBEAM DSP Filter Modules from DX Engineering to hold those signals at bay!

4.0 out of 5 stars ( 1 )

$55.99

Metropwr FXMASTER 8 Band Audio Equalizers

Metropwr FXMASTER 8 Band Microphone Audio Equalizers provide sophisticated control over the tonal qualities of your microphone and transmit audio quality. The range of equalization possibilities are virtually unlimited, which makes it possible to custom tailor the audio just the way you want. The FXMASTER features an adjustable noise gate to help eliminate background noise that can mix with speech that makes copy difficult. Universal microphone and radio matching capabilities make it possible to adapt any type or brand of microphone and then send the output audio to 2 connected radios (user assembled adapters required, see manual). The FXMASTER has three separate front panel transceiver 8-pin round mic input connectors for ICOM, YAESU, KENWOOD and other commercial microphones. The rear panel has two 3.5mm balanced mic input jacks, dynamic and electret "Studio". Use a headset mic or a user supplied XLR to 3.5mm stereo adapter cable to connect 3-pin XLR studio dynamic or electret condenser microphones. External supply required for +48V phantom power mics is not included.

5.0 out of 5 stars ( 2 )

$1,039.99

West Mountain Radio CLRmodule ClearSpeech® DSP Noise Reduction Board

West Mountain Radio CLRmodule ClearSpeech® DSP Noise Reduction Board – a DIY project for DSP filtering. Once configured and developed, the CLRmodule can connect directly to a radio audio. It is extremely effective in making improvements to the clarity and readability of radio communications. QSO's will be more enjoyable without the fatigue of background noise. In many cases, there will be a noticeable improvement in understanding weaker signals, making contacts, and general listening. CLRmodule Digital Signal Processor (DSP) noise reduction is excellent for passing voice and CW as the DSP recognizes the intermittent nature of CW and allows it to pass noise free. It attenuates atmospheric noise, hum, hiss, whistles, and static and effectively removes heterodynes, ignition noise, lightning crashes and power line noise. The process is dynamic and changes with the interference and the signal, but the effect is rewarding. Operation is more fun without all of the background noise. Click "More Details" and the link to the manual in the Documentation tab to read and understand very important details about how to utilize this DIY project device- the West Mountain Radio CLRmodule ClearSpeech® DSP Noise Reduction Board.

Not Yet Reviewed

$99.95

West Mountain Radio CLRstereo ClearSpeech® Dual Noise Reduction DSP

West Mountain Radio CLRstereo ClearSpeech® Dual Noise Reduction DSP – an extremely effective tool for improving communication clarity. Dynamic DSP noise reduction adapts to changes in the interference and signal. It passes voice and CW while attenuating atmospheric noise, hum, hiss, whistles, and static. It effectively removes heterodynes, ignition noise, lightning crashes, power line noise. QSO's are more fun without all the background noise. The DSP recognizes the intermittent nature of CW and allows it to pass noise free. CLRstereo features independent "Left" and "Right" channels, each with DSP filter level, Tone and Volume (audio level) controls and a red "CLIP" LED to indicate when that channel input level is too high. Next to the front panel toggle Power switch is a green LED to indicate powered condition. CLRstereo can process two channels simultaneously, for use with two separate radios or with a radio that features two separate receivers, such as Main and SUB. Please note that the CLRstereo does not contain a power amplifier. While the output is sufficient for a headphone or low level speakers, the CLRstereo is intended to be connected to an amplified speaker system. Specification of the CLRstereo ClearSpeech® Dual Noise Reduction Digital Signal Processor: - Enclosure: Metal, powder coat painted - Dimensions (WHD): 7.25 x 1.5 x 3.5 in. - Input: 1/8 in. (3.5 mm) stereo female (TRS) - Output: 1/8 in. (3.5 mm) stereo female (TRS) - Power Input: USB or 2.1 mm, center positive - Power Requirements: USB power or 9 to 15 Vdc, 212 mA typical - Audio Output, max.: 2 V p-p into a high impedance load; 560mVpp into 8 ohm input - Clipping Level: 585 mV p-p (volume control full clockwise) - Noise Reduction: Adaptive, single tone greater than 50 dB

Not Yet Reviewed

$349.95

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