MUSIC ALL DSP-480 Network DSP FIR Processor User Manual

August 14, 2024
MUSIC ALL

MUSIC ALL DSP-480 Network DSP FIR Processor

Specifications

  • 4in 8out FIR DSP audio processor
  • Integrated with high-performance DSP processor, Dynamic EQ, FIR filter, and other powerful functions
  • Controlled via RJ45USB and RS232 with PC software MusicAllDSP
  • ADI SHARC 21489 450MHz DSP processor
  • System delay: 1.8ms
  • AD/DA: 24-bit 96KHz
  • Frequency response: 20Hz-20kHz(+-0.5dB)/Line
  • THD+N: -90dB(@0dBu,1kHz,A-wt)/Line
  • SNR: 108dB(@16dBu,1kHz,A-wt)/Line
  • USB: Type A-B, free driver
  • RS232: Serial port communication
  • TCP/IP interface: RJ-45
  • Product Dimensions: 483mmx215mmx44.5mm
  • Operating temperature: -20°C to 80°C

Chapter 1: Introduction

The DSP-480 is a versatile audio processor with advanced features such as Dynamic EQ and FIR filtering. It can be controlled using the provided PC software MusicAllDSP via RJ45USB and RS232 connections.

Chapter 2: Technical Parameters

The DSP-480 features ADI SHARC 21489 450MHz DSP processor, 24-bit 96KHz AD/DA, and balanced analog audio inputs and outputs. The device has a system delay of 1.8ms and offers exceptional audio performance specifications.

Chapter 3: Functions Structure and Panel Operation

The front panel of the DSP-480 allows users to access various functions such as GLOBAL MEMORY, INPUT SECTION, MATRIX, and SYSTEM. Users can easily navigate through the menu using the NEXT or BACK buttons and make selections by pressing ENTER. The panel also provides quick access to presets and channel settings.

Operation of Buttons on Front Panel – Input & Output Channels
Users can mute input or output channels by shortly pressing the corresponding button under the LED, which will turn red. To adjust channel parameters, users can long-press the button under the LED, turning it blue.

Functions – Input Channels

  • IPX Input X Gain
  • IPX Input X Polar
  • IPX Input X PEQ:1…15

Functions – Output Channels

  • OPX Output X Gain
  • OPX Output X Polar
  • OPX Output X PEQ:1…15

FAQs

Q: How can I control multiple devices using the DSP-480?
A: You can control multiple devices by connecting the DSP-480 to your PC via RJ45USB or RS232 and using the MusicAllDSP software provided.

Q: What is the operating temperature range of the DSP-480?
A: The DSP-480 can operate within a temperature range of -20°C to 80°C.

Chapter 1 Introduction

DSP-480 is a 4in 8out FIR DSP audio processor, integrated with high performance DSP processor, Dynamic EQ, FIR filter and other powerful functions. With RJ45USB and RS232, PC software MusicAllDSP provides users an easy way to control multiple devices. RS232 connectors support device being controlled from thirdparty system.

Applications Meeting room Broadcast Multi-function hall Features 4 analog inputs and 8 analog outputs. High performance DSP processor, 96k 24bit sampling rate. Input with 15 bands PEQ, output with 10 bands PEQ. Support HPF and LPF with ButterworthBesselLinkwitz-Riley. Supports LSLV and HSLV, ALL-PASS filters. Input with 3 bands Dynamic EQ. Input with 4 x 1024Taps 48k FIR linear phase setting. Output with 4 x 512Taps 48k FIR linear phase setting. Support presets archiving and locking, hide setting parameters. Control connections: USB or TCP/IP. Configured with RS232 central control connection. Nice GUI windows 7/8/10/11 software
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Chapter 2 Technical parameters

DSP-480

1. DSP Process

Process:

ADI SHARC 21489 450MHz

System delay:

1.8ms

AD/DA:

24-bit 96KHz

2. Analog Audio Inputs and Outputs

Input:

4 channels balanced.

Input interface:

XLR(Neutrik®)

Input impedance:

20K

Max input level:

16dBu/Line

Output:

8 channels balanced. Line level

Output interface:

XLR(Neutrik®)

Output impedance:

150

3. Audio Performance Specifications

Frequency response: 20Hz-20kHz(+-0.5dB)/Line

THD+N:

-90dB(@0dBu,1kHz,A-wt)/Line

Ground noise:

20Hz-20kHz, A-wt, -93dBu

SNR:

108dB(@16dBu,1kHz,A-wt)/Line

4. Connection Ports and Indicators

USB:

Type A-B, free driver

RS232:

Serial port communication

TCP/IP interface:

RJ-45

Indicator light:

Clip, level, edit, mute

5. Electrical and Physical

Supply:

AC100V240V 50/60 Hz

Product Dimensions

483mmx215mmx44.5mm

Packaged Dimensions 537mmx343mmx77mm

Net Weight

3.6kg

Packaged Weight

4.0kg

Operating temperature: -2080

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Chapter 3 Functions structure and panel operation
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Dimension (mm)

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Operating front panel

Press MENU, it will show menu list, using NEXT or BACK to select functions: GLOBAL MEMORY, INPUT SECTION, MATRIX, SYSTEM, press QUIT to exit.

Functions in panel Menu list

1.GLOBAL MEMORY 2.INPUT SECTION 3.MATRIX

RECALL a Memory STORY a Memory DELETE a Memory A ANALOG B ANALOG C ANALOG D ANALOG Routing Out.1=Input A*….

4.SYSTEM

1 IP SET 2 RENAME 3 DSP VERSION

Remark
Long press such output channel button under LED to change.

Press BYPASS, it will quickly show RECALL a Memory function, using NEXT or BACK to select presets and then press ENTER to enable one of presets.

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Operation of buttons on front panel – Input & Output Channels When user need to quickly mute input or output channel, shortly press button under the LED of such channel, the light will turn red.
When user need to set parameter of input or output channel, long press button under the LED of such channel, the light will turn blue.

Functions – Input channels
IPX Input X Gain IPX Input X Polar IPX Input X PEQ:1…15 IPX Input X HPF IPX Input X LPF IPX Input X Delay IPX Input X Noise Gate IPX Input X Noise Gate IPX Input X DEQ:1…3 IPX Input X DEQ:1…3 IPX Input X DEQ:1…3 IPX Input X DEQ:1…3 IPX Input X Fir

Buttons for setting
+,FREQ, Q, GAIN FREQ, Q FREQ, Q GAIN FREQ Q, GAIN FREQ, GAIN Q, GAIN Q, GAIN Q, GAIN

Functions – Output channels
OPX Output X Gain OPX Output X Polar OPX Output X PEQ:1…15 OPX Output X HPF OPX Output X LPF OPX Output X Delay

Buttons for setting
+,FREQ, Q, GAIN FREQ, Q FREQ, Q GAIN

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Buttons for setting
BYPASS BYPASS BYPASS
BYPASS BYPASS BYPASS BYPASS BYPASS BYPASS BYPASS
Buttons for setting
BYPASS BYPASS BYPASS

FIR DSP SPEAKER PROCESSOR

OPX Output X Compress OPX Output X Compress OPX Output X Limiter OPX Output X Limiter OPX Output X Fir

FREQ, Q, GAIN Q, GAIN Q, GAIN GAIN

BYPASS BYPASS BYPASS BYPASS BYPASS

Remark: X” means the No. of such channel user has selected. If find no effect after setting parameter, please check whether select BYPASS or not.
When user need to link channels and then set their parameter, long press button under the LED of each channel, the light will turn blue. LCD will display “IPX+” or “OPX+”, means the second channel or other channels will be set same with first channel.

When user need to quickly mute channels in link setting, shortly press button under the LED of one of channels, all the lights will turn pink.

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Chapter 4 Operation of control software – MusicAllDSP
MusicAll provides user with a fast interaction to control one or more devices through multiple methods: TCP/IP, USB, common serial port (RS232). Easily set DSP functions of device, and check central control codes.The configuration parameter can be stored in presets, convenient for various applications. 4.1 Operating condition MusicAllDSP is suitable for Win7/8/10/11 x86/x64 PC systems with Microsoft .NET Framework 4.0 installed. Double click the file with the MusicAllDSP logo:
the main interface will pop up:
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4.2 Connect to PC

FIR DSP SPEAKER PROCESSOR
If connect device by using network cable, click Setting in Device List, choose TCP in Connection windows.
If connect device by using USB AB, click Setting in Device List, choose USB in Connection windows.
If connect device by using network cable, click Setting in Device List, choose COM in Connection windows. Please check port and baud rate carefully for 232 before setting.

The software will scan device the method set in last time, to check if device is connected. If successfully connected, devices will be shown in device list.
User can mute device, refresh connecting, or delete device in this window. Single click device, to load function interface.

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When using TCP control, there is a situation that only one point is displayed after scanning, but can not connect device. In this case, user need to change the IP address of the device to the same network segment as the PC computer.

Right-click the device enclosure, a Net Setting window will show.
Set IP address of device refer to IP showed in the bottom of the software. Set the first three paragraphs same with the PC IP.

Successfully scanned and connected.

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FIR DSP SPEAKER PROCESSOR
User can link multiple same devices in group by clicking Link button, and then set group device, group name and main device, link mode and parameter according to needs.
4.3 DSP functions setting Double-click HOME icon to open all functional interfaces, or double-click a function icon separately to open the corresponding interface. When multiple function windows opened, users can drag the window to switch function Settings.
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4.3.1 DSP functions setting – INPUT
Set Phase of input; Set Mute of input; In Pro version, user can select
AnalogAESDante input signal; When choosing test signal, user can
select Sine/Pink Noise/White Noise for each input channel.

4.3.2 DSP functions setting – NOISE GATE

Attack: 1 to 2895ms; Release: 1 to 2895ms; Threshold: -120 to -60dBu;

Click

to enable

this function.

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4.3.3 DSP functions setting – PEQ-X (input and output)

High pass filter

enter value of frequency and select type, press

to enable this function:

Butterworth 6/12/18/24/36/48, Bessel 12/24/36/48, Linkwitz-Riley 12/24/36/48.

Low pass filter

enter value of frequency and select type, press

to enable this function:

Butterworth 6/12/18/24/36/48, Bessel 12/24/36/48, Linkwitz-Riley 12/24/36/48.

PEQ 15 bands for input channel Type: PEQ/LSLV/HSLV/ALLPASS-1/ALLPASS-2; Freq(Hz) Q Gain(dB): input value or use mouse pulley to set value; Users can also drag the frequency dot on the curve to adjust.

PEQ 10 bands for output channel Type: PEQ/LSLV/HSLV/ALLPASS-1/ALLPASS-2; Freq(Hz) Q Gain(dB): input value or use mouse pulley to set value; Users can also drag the frequency dot on the curve to adjust.

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FIR DSP SPEAKER PROCESSOR
Phase curve: display the phase curve of the current channel. View: show or hide all balance control points. Bypass: turn on or off all equalizer EQ of the current channel at the same time Preset: save all the setting parameter of the equalizer of the current channel to the computer, and recall the channel equalizer parameter of the computer, which can be called across channels and devices. Copy: copy the current channel equalizer parameter value, which can be pasted to other similar channels (such as input channel parameter can only be copied to other input channels). Paste: used in combination with the copy button to paste the last copied equalizer parameter value to the current channel. Reset: reset the equalizer parameter to the default parameter values.

As shown in the figure above, the left side

is the interface switching

button for each channel. Click to switch the EQ channel, and the color is the currently

selected channel.

is the curve color of the EQ channel.

For each channel’s EQ

curve display switch, check it to enable it to display the curves of other channels in the

current channel interface.

4.3.4 DSP functions setting – DYNAMIC EQ
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Mode: Boost AboveBoost BelowCut AboveCut Below Threshold: -90 to 24.0dBu Q: 0.27 to 15 Ratio: 1.0 to 100.0 Max Gain: 0.0 to 12.0 Attack: 1 to 2895ms Frequency: 20 to 22000Hz Release: 1 to 2895ms Type: BYPASSPEQ Bypass button to switch

4.3.5 DSP functions setting – DELAY (input and output)

Max 1000ms for input channel; Max 1000ms for output
channel;

Click function;

to enable this

Click

to reset each

channel; User can switch ft/cm/ms
measurement for delay.

4.3.6 DSP functions setting – MATRIX MIX
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In the above figure, input channel (on top side) corresponds to output channel. The value box with a value is mixing key of channels. When the mixing key is green (double-click the value box to switch the state), the input channel and output channel signal realizes the mixing function.
The right part of the above figure contains the gain, reset button, and clear button of the matrix mix. Click the value box on the left, and then drag the sliding block of the matrix mix gain or enter a value in the value box to adjust the matrix block Click the reset button to reset the matrix mixing function to the initial one-to-one state; click the clear button to clear all the matrix mixing functions, and there is no correspondence between the input and output of the device.

4.3.7 DSP functions setting – COMPRESSOR

Soft knee: 0 to 30; Threshold: -90.0 to 24.0 dB; Attack: 1 to 2895 ms; Ratio: 1.0 to 100.0; Release: 1 to 2895 ms;

Click this function;

to enable

4.3.8 DSP functions setting – LIMITER
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FIR DSP SPEAKER PROCESSOR

Threshold: -90.0 to 24.0dBu; Release: 1 to 2895 ms;

Click this function;

to enable

4.3.9 DSP functions setting – OUTPUT

Set phase of signal; Set mute of output channel; Set gain of output channel.

4.4 Monitoring and setting of channels
User can monitor gains level of input and output channels. 4.4.1 Channel gain level
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There are 2 kinds of input signal in device: ANALOG and testing signal. It will show a label for user.
Input value, drag gain fader or use mouse pulley to set value of gain.

4.4.2 Quick buttons of DSP in channels
M Mute + Phase N Noise Gate E PEQ D Delay

M Mute E PEQ D Delay C Compressor L Limiter + Phase

4.4.3 Group and channels link

User can quickly set channels in groups for opening or closing mute, phase, noise gate, PEQ and delay function.

M Mute + Phase N Noise Gate E PEQ D Delay
Channels link for input

M Mute E PEQ D Delay C Compressor L Limiter + Phase
Channels link for output

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FIR DSP SPEAKER PROCESSOR
When click link button, Channels Link window would show as below:
Select the corresponding channels to link, they will be in group for user to set parameter. 4.5 Menu – File
New project: the project is restored to the initial open state. Demo Device: user can view all the functions of the device without affecting the specific device connected. Open: open an existing device management project from the computer disk. Save: save the current equipment management project in the computer disk. Save as: save the current equipment management project to the computer disk.
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FIR DSP SPEAKER PROCESSOR
4.6 Menu – Device (including Device lock)
Devices: view or modify the software version information, device name and device IP address of the upper and lower computer of the device. Set password of device. Channel name: set the name of each input and output channel, with memory function. Channel copy: copy device input and output channel parameter, can realize cross-device copy parameter (Note: the same type of device is required). Central control: provides user a quickly way to inquiry code of Center Control setting. More details, please refer to another user manual

, it provides whole guide and codes for user to match every specific system. – 19

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Device locking User can set his own password of this device to protect audio project after setting parameters. After unlock the device in software, user can clear password or reset the password. The password can be in four-digit format (0,1,2…9), so that user can use the control software or the front panel of device to unlock the password. If the device is locked, there is a icon showed in software and LCD display, as per Figure 7.18.1
Figure 7.18.1
Input the password in software to unlock the device
Input the password in LCD display to unlock the device When device is locking, user can press mute button of each channels in front panel. Press either of BACK, NEXT, MENU, ENTER, BYPASS, QUIT button, LCD will show interface to input password, press GAIN button to select digit, and press BACK or NEXT to select digit position. Then select “OK” and press ENTER to unlock device.
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FIR DSP SPEAKER PROCESSOR
If wrong input, software will remind user there is only 5 times to input right password. More than 5 times, device can’t be unlock any more, user have to return this device back to dealer or factory. The dealer or factory will reset the device and clear all parameter settings.
Successfully input password and enter main interface
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4.7 Menu – Connection

FIR DSP SPEAKER PROCESSOR

Port: set the connection mode, port number and baud rate, confirm the connection mode and then select the corresponding port. Connect: connect and download the device parameter. Disconnect: disconnect the connected device. Connect all: connect and download the device parameter of all devices in the device list. Disconnect all: disconnect all connected devices in the device list.
4.8 Menu – Preset

Save: select the saved gear, save all the parameter of the current automatic gear of the machine to the device preset (2~30 Preset bit). Recall: call the device preset to the current automatic gear position. Delete: delete the existing preset, the default file cannot be deleted, over written or saved. Clear: delete all presets in the device. Boot: select a certain preset, after setting it as the boot file, each time the device is powered on, it will automatically call the save the parameter; the last set parameter need
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FIR DSP SPEAKER PROCESSOR
to be automatically saved, please set the automatic file to the boot file. Import preset: import a single preset file on the computer. Export the preset: export all the parameter of the current state to the computer, and generate a single preset file. Import preset package: import the preset package file containing multiple presets on the computer. Export preset package: pack multiple presets in the machine’s preset into one preset package and export it to the computer. 4.9 Menu – System
Language: multi-language switching, supports simplified, traditional, and ENGLISH. About: current control software and device firmware version information. Upgrade: use can upgrade the firmware by using this function, a upgrade .bin file should be needed from seller or speaker factory. In general, no need to upgrade the firmware in device. Only there is a bug or new function in software, upgrade function will be used.
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4.10 FIR filter and function
4.10.1 FIR filter and applications
When user uses PEQ to adjust audio signal and set a linear magnitude, he can find the phase of signal changed, due to IIR filter. However, DSP products provide user a useful tool FIR filter to adjust audio signal with a linear phase.

Some calculation: Frequency resolution = Sampling/Taps Available min. frequency Frequency resolution*3

Means when use adjust audio signal with 48kHz, 1024 taps, FIR filters will take effect in frequency above 141Hz of audio signal. The taps value more high, the FIR filter curve more steep.

FIR filter processing audio signal will produce a certain delay:

Delay = (1/Sampling Hz)*Taps/2

Taps

48kHz Sampling

96kHz

256

2.67ms, LF 563Hz

512

5.33ms, LF 279Hz

768

7.99ms, LF 188Hz

1024

10.67ms, LF 141Hz

2048

21.33ms, LF 70Hz

Applications: Linear of the phase curve of the speaker;

1.33ms, LF 1125Hz 2.67ms, LF 558Hz 4.00ms, LF 375Hz 5.33ms, LF 281Hz 10.67ms, LF 141Hz
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FIR DSP SPEAKER PROCESSOR
Match the phase and magnitude of different speaker models within the same product line, as well as different speaker models in the installation project to make it easier to debug speaker groups and arrays;
Dealing with linear array systems (for audience area coverage optimization); Frequency division optimization to improve the consistency of frequency response of
multi-division speakers over their coverage Angle range.
Devices required: Measurement Microphone ×1

Audio Interface

×1

Windows PC

×1

(installed software including

Smaart, rePhase or FIR

Designer, MusicAllDSP)

FIR audio processor or DSP ×1

network power amplifier

Speaker

×1

Connection schematic diagram:

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4.10.2 Using third party software to set FIR magnitude and phase Step 1: measure phase curve of speaker in Smaart V7
Step 2: copy curve to ASCII in Smaart V7
Step 3: copy curve to software rePhase “Import Measurement From Clipboard”
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Step 4: adjust phase EQ or any other parameter in software, to match a linear phase for speaker
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Step 5: export .txt file after setting
Marks: 1. Set taps in 2048/1024/768/512/256, here we set in 512. 2. Set rate in 48000Hz. 3. User can rename this file and find it easily. 4. Set directory for exporting file, such as C:/Users/User/Desktop. 5. Click “generate” to export a FIR .txt file.
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Step 6: import FIR .txt file in FIR audio processor or DSP network power amplifier
Open MusicAllDSP software, user can choose an input channel or output channel as needed, such as FIR in output channel, it will show a FIR function window.

effect this importing.

press IMPORT to import txt. file, than press STORE to

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remember to cancel BYPASS.
Step 8: measure the curve of speaker again, use can find it become more linear.
After all setting, please remember to save a preset for your hard working in the speaker.
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