Certes KLEAR AUDIO KLR1m Manuel utilisateur
K L E A R A U D I O & C E R T E S . L V
KLR1m USER MANUAL
Table of Contents:
WELCOME AND IMMPORTANT INFORMATION
PRODUCT OWERWIEW
SPECIFICATIONS AND FRONT/REAR PANELS
FIRST START UP OF APL MEASUREMENT SOFTWARE
MEASUREMENT TECHNOLOGY
First measurement, Sequence and Actions
CONNECTION AND USAGE OF KLR C1
USAGE OF KLR1 LS EQUALIZER
KLR TECHNOLOGY MESUREMENT TECHNIQUE
•OVERALL LF & HF BALANCE
•LOUDSPEAKER DIRECTIVITY
•MEASUREMENT CALIBRATION AND TESTING
F A Q
WORKFLOW OF APL WORKSHOP SOFTWARE
APL WORKSHOP FUNCTIONS DESCRIPTION
Thank you for choosing KLR1M! To get the most out of your KLR1m FIR filter DSP, please take
the time to read through this manual.
System Requirements:
To configure your KLR1m you will require a Windows computer with the fallowing specification:
•PC with at least 1GHz processor. Intel® Pentium®/Celeron®, or AMD K6®/AMD Athlon®, or
compatible processor recommended.
•1 Gigabytes of RAM or higher
•Keyboard and Mouse
•2 Free USB ports
Warning:
Klear cannot be held responsible for any damage that may result from the improper use or incorrect
configuration of this product. Please read this manual carefully to ensure that you fully understand
how to operate and use this product, as incorrect use or use beyond the parameters and ways
recommended in this manual have the potential to cause damage to your audio system.
Safety Instructions:
Location:
•Before moving the device, remove all connected cables.
•Do not expose the device to excessive dust or vibrations, or extreme cold or heat (such as in
direct sunlight, near a heater, or in a to prevent the possibility of panel disfiguration or
damage to the internal components.
Water warning:
•Do not expose the device to rain. Do not use it near water or in damp or wet conditions, or
place containers on it containing liquids which might spill into any openings.
As a general guideline, you should perform the initial configuration of the KLR1m DSP before
enabling audio through any connected output device or amplification. Doing so will help ensure that
the software is correctly configured.
User Serviceable Parts: There are no user serviceable parts inside this product. In case of failure,
customers refer all servicing to the Klear factory.
Please read this user manual carefully. Thanks for your understanding!
KLR1m is a member of KLEAR KLR1 family of FIR based system equalizers. Very compact in size
and cost-effective KLR1 is fully capable DSP with FIR (finite impulse response) filter EQ (700
taps). Class compliant USB graphic interface makes possible to configure every detail of your
audio system and offers pre-configured design templates that can be used as starting points
for a variety of DSP applications. Quick and easy to install it is ideal for small and medium event
rooms, school classrooms, retail spaces and many more, or this pocket size unit can be a great
addition to every audio engineer’s tool kit.
Main Features:
•4 x nalog Inputs, 2 x Balanced and 1 x Stereo outputs
•FIR filterring on all putputs (700 taps) in total
•Fully programmable DSP with wide range of
Parametric EQ, Crossovers and Delays
•Very sleek and compact design
•Real time Configuration
•Wide range of applicatons
Front and Rear panels.
Specifications:
Number of processing channels: 1 or 2, user configurable.
Resolution: 48kHz/24bits.
Frequency resolution of correction curve: 35 Hz, 700 coefficients for FIR filter @ 24 kHz
bandwidth.
Inputs: 4 x analog, balanced.
Outputs: 2 x analog, balanced, 1 x analog stereo output.
Input/output analog signal max levels: +10dBu.
Analog input/output connection types: 3,5mm mini jack.
Analog input impedance: 20 kOhm.
Analog output impedance: 150 Ohm.
Common mode signal rejection (CMSR) of analog input: 60 dB.
Dynamic range (analog input/output): 98 dBA.
THD (analog input/output): -80dB.
Signal delay: 1.6ms
Control and upload interface: I2C (Inter-Integrated Circuit), with Micro USB connector
Interface management: Sigma Studio Software by Analog Devices
Power: 5V 0.12A (0,6W)
Diamensions: 113mm x 20mm x 70mm (L/H/W).
Weight: 140g
Application of use example:
Analog Input and Output Schematic:
The KLR1m workflow:
1. Download and install all the necessary software:
•APL Workshop
•APL FIR Converter
•Sigma Studio by Analog Devices
It will be available from the user downloads section of the KLEAR website. Download and
install the Software fallowing the instructions in the user manual.
2. Familiarize yourself with each software and its user interface before connecting to
the processor.
3. Use the Sigma Studio to set up an initial audio processing configuration as
intended for your application. For example:
1. Input /Output processing
2. Equalization
3. Delays, Limiters etc.
Load the FIR filter Equalizer correction into the Sigma Studio by loading table values from
where the files from your APL FIR Converter are saved. in to the Left and Right Channel FIR
Filter windows.
Please make sure that you enter the right amount of FIR filters used by a FIR converter
in the Left and Right Channel windows.
4. Save the configuration to the file.
5. Make the necessary audio connections. Make sue that your system power is turned off
before connecting the device.
6. Make the I2C bus connection. KLR1m is using I2C bus for writing data to DSP and
power. See I2C Bus usage on page ……… USB Type A to Mini USB Type B connectors from
your computer to KLR1m.
Make sure that in hardware config page (sigma studio) the USB is marked green, not red.
7. Do The fine tuning and real time adjustments. Now you can fine tune your system in
real time by adjusting your parameters.
and then sending the data to the processor via Function F7 button in the Sigma Studios.
8. Write it to the processor memory. When you are happy with the results, you need to
write the data to the DSP by using Function F7 again make sure that you have sent all
the latest changes.
Then in the Hardware Config page right click on the ADAU1701 window and
choose Write Latest Compilation to E2PROM
Sigma Studio Overview:
SigmaStudio™ is a graphical development tool designed by Analog Devices to program
SigmaDSP® audio processors. The software includes an extensive library of algorithms to
perform audio processing such as filtering, mixing, and dynamic processing, as well as basic low-
level DSP functions and controls. All these algorithms are available as processing blocks that can
be wired together as in a schematic: this means that you are not forced to use a predefined
signal processing path, but you can freely decide each and every single detail of it, determining
the number of filters, eq, limiters or delays depending on your actual needs and the amount of
resources available. The compiler takes care of generating DSP-ready code and a control surface
for setting and tuning parameters in real time, listening to the result of the changes you make.
This tool allows engineers with no DSP code writing experience to easily implement a DSP into
their design while remaining powerful enough to satisfy the demands of more experienced DSP
designers.
There is no longer a need to send an email to get a software key, so you should be able to
download SigmaStudio right away from our new website.
Download SigmaStudio using the following set of steps:
To download the software...
• Log in to the Analog Devices website ( http://www.analog.com ) using your myAnalog account.
If you don't already have an account, register for one. You can access myAnalog in the upper
right corner of the webpage.
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