ALF-DSP44-U

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ALF-DSP44-U

The ALF-DSP44-U Audio Digital Signal Processor (DSP) is equipped with several core technical features to simulate the work of an audio engineer. The ALF-DSP44-U consists of 4 analogue inputs and 4 analogue outputs, USB Audio, RS-232, RS-485, and IP control. With one ADI SHARC 21489 processor, it is equipped with advanced audio processing modules including Acoustic Echo Cancellation (2 Channels), Noise Suppression, and Auto Mixing. The Analogue to Digital (A/D) and Digital to Analogue (D/A) convertors on the Input and output stage of the ALF-DSP44-U features 48kHz sampling rate and a bit rate of 24Bits, providing high definition audio sampling and processing. It also has a dynamic range of 110dB and a maximum level of +24dBu. It features input and output processing modules including: Expanders, Compressors, Acoustic Gain Compensation (AGC), Parametric EQ, Feedback Suppression, Automatic Noise Supression(ANC) and Delay. DSP-based audio management, routing, processing, and control, is facilitated via a computer running the GUI Software for the ALF-DSP44-U Hardware. The Alfatron DSP Controller software is a Windows-based application, which is used to configure and control the ALF-DSP44-U. The DSP Controller is a full-feature application, including parameter adjustments and peripheral accessory settings of all modules, such as RS232, RS485, and click-and-drag panel configuration. The most interesting part is the user interface which allows the engineer to customize the user interface so that the integrator can edit it; or the onsite technicians, or end users can operate it. Advanced security features make it possible for the end user to only access the controls allowed by the engineer, or the designer.

Product Features:

  • Includes one ADI SHARC 21489 Audio Processor
  • 4 Balanced Mic / Line Inputs and 4 Balanced Line outputs on phoenix (PCB) connections
  • 2 Channels of AEC processing
  • 24Bit, 48kHz A/D and D/A convertors
  • 1ch. USB input and output
  • Advanced Audio Processing incl. AEC, Auto-Mixing, Noise Suppression, Matrix
  • Audio Processing Modules include:
    • Expanders
    • Compressors
    • Acoustic Gain Compensation (AGC)
    • Parametric EQ
    • Feedback Suppression
    • Delay
  • Software GUI Interface for easy setup and control of all DSP features.
  • RS-232, RS-485, and IP Control.

Optional:

  • External volume controls and keypads are available separately

Specification

Technical Specifications

Processor ADI SHARC 21489(x1)
A/D and D/A Convertors

(Sampling rate / Digitalizing bit)

 48kHz  / 24Bit
Input Gain 0 – 48dB in 6dB Steps
Phantom Power 48V
Frequency Response (20~20KHz) ±0.2dB
Maximum Level +24dBu
THD + Noise 0.003%@4dBu
Dynamic Range 110 dB
Background Noise (A-weighted) -91 dBA
Common Mode Rejection Ratio @60Hz 80dB
Channel Isolation @1KHz 108 dB
Input Impedance (Balanced Connection) 9.4KΩ
Output Impedance (Balanced Connection) 102Ω
System Delay <3ms
Inputs 4 Balance Line/Mic Inputs on Phoenix Connections
Outputs 4 Balance Line Outputs on Phoenix Connections
Audio Processing Functions

 

 Acoustic Echo Cancellations (AEC) – 2 Channels

Automatic Gain Control (AGC)

Noise Suppression

Auto Mixer

Matrix

8 Band Parametric EQ (Inputs & Outputs)

High / Low Shelf Filters

Expander

Compressor / Limiter

Feedback Suppressor

Delay
USB AUDIO 1 In – 1 Out
Control Options IP based PC software and host control.

Third party control for RS-485 and RS-232.

Mechanical

Working Power AC110~240V 5Hz-60Hz
Maximum Power Consumption <40W
Rack Space Required Half Rack
Dimensions (Width x Depth x Height) 215x184x45mm
Shipping Weight 1.8KG

Software Requirements

A Windows PC with:

  • Intel i5 processor or higher
  • 8 GB or higher memory
  • 1 GB free storage space
  • Windows 7 or higher version
  • Minimum 1920 x 1080 resolution
  • 24 bit or higher color
  • Network (Ethernet) port

Software Installation:

Visit the device web page address: 169.254.10.227

  1. Download software from the Josawa website and install files.
  2. Double click the downloaded file and install by following the instructions on the screen.

After the software is installed, read other parts of the help file, or execute the software.

After the software is installed, use one of the following methods to open the software:

  1. Double Click Desktop Icon
  2. Open from Start menu

Resources

Software Download

Download the Josawa DSP software installation file here:

JOSAWA DSP Software V3.0.3.0.123 (Not compatible with firmware V.10a.1.2.1 and above)

JOSAWA DSP Software V 3.0.3.0.2.125 (Compatible with firmware V.10a.1.2.1 and above)

Minimum PC Requirements

A Windows PC with:

  • Intel i5 processor or higher
  • 8 GB or higher memory
  • 1 GB free storage space
  • Windows 7 or higher version
  • Minimum 1920 x 1080 resolution
  • 24 bit or higher color
  • Network (Ethernet) port

Software Installation:

  1. Download software from the link above.
  2. Unzip the downloaded file and double-click to install and follow the instructions to complete installation.

After the software is installed, use one of the following methods to open the software:

  1. Double-click the JOSAWA DSP3.0 desktop Icon
  2. Open the JOSAWA DSP3.0 app from Start menu

Minimum PC Requirements

A Windows PC with:

  • Intel i5 processor or higher
  • 8 GB or higher memory
  • 1 GB free storage space
  • Windows 7 or higher version
  • Minimum 1920 x 1080 resolution
  • 24 bit or higher color
  • Network (Ethernet) port

Software Installation:

  1. Download software from the link above.
  2. Unzip the downloaded file and double-click to install and follow the instructions to complete installation.

After the software is installed, use one of the following methods to open the software:

  1. Double-click the JOSAWA DSP3.0 desktop Icon
  2. Open the JOSAWA DSP3.0 app from Start menu

Firmware

Firmware Download

SPECIAL NOTE:

PLEASE ENSURE YOU HAVE SAVED THE CURRENT DSP SETTINGS BEFORE PROCEEDING WITH ANY FIRMWARE UPDATES BY SELECTING [FILE -> SAVE AS…] AND SAVING THE CURRENT CONFIGURATION AS SOME FIRMWARE UPDATES MAY REQUIRE A FACTORY RESET OF THE DSP IN ORDER TO FINISH THE FIRMWARE UPDATE PROCESS.
SHOULD YOU HAVE ANY OR MULTIPLE PRESETS CONFIGURED AND IN USE, PLEASE ALSO SAVE THESE INDIVIDUALLY BY SELECTING THE SAVE PRESET BUTTON FROM THE MAIN DSP SOFTWARE INTERFACE. SEE THE DSP USER GUIDE FOR MORE DETAILS.

THE NEW FIRMWARE V10a.1.2.1 IS NOT COMPATIBLE WITH PREVIOUS VERSIONS OF THE SOFTWARE OR MOBILE APPS.

Download complete update package Firmware V10a.1.2.1 here

APP Control

iOS APP – DSP Pro V2  app is available for download from iOS.

Android APP – DSP Pro V2 app (phone and tablet apk) download here.

Accessories

Josawa ALF-CP1L

The wall mounted ALF-CP1L control panel consists of a 1.3” OLED screen and a rotary encoder with Push-to-Select. The 2-line OLED provides customizable menus and sub-menu controls of Volume, routing, presets and more. Easily programmed and managed from the Josawa DSP software using a single CAT5 connection for control and power.

FAQ's

Coming Soon!