$3.1.2.22 Import MEPEG spl and impedance Use the following procedure : -Initialize the MEPEG import directory by entering -IMPORT -> MEPEG -> INITIALIZE -create a new frequency response file (FILE MENU , NEW FREQUENCY RESPONSE) -Choose import MEPEG (IMPORT MENU) -Choose the file using the cursor or mouse and press (return) A message will be displayed, showing the type of curve (spl or impedance) that was imported. $3.1.2.24 ATB 2.3 Import function The SPEAKER PRO 6.0 version supports the import of the following ATB 2.3 files : APE : acoustical phase IME : impedance EPE : electrical phase ABE : spl Before any ATB files can be imported, the ATB import directory has to be installed. (IMPORT -> ATB -> INITIALIZE) e.g. C.\ATB2.3\LOG Afterwards data can be imported as described already. The function is able to distinguish between the different files. Any imported files can be shown in the FILE menu choosing the EDIT GRAPHIC sub menu. $3.1.2.25 DAAS import functions SPEAKER PRO 6.0 supports the import of DAAS data. SPEAKER PRO 6.0 supports the import of spl, impedance and electrical phase. In order to import DAAS data, the import directory IMPORT -> DAAS -> INITIALIZE has to be initialized. e.g. C:\DAAS\DATA Afterwards import data can be imported. Any imported data can be displayed by chosing DATA -> GRAHIC EDITOR. $3.1.2.26 LMS import functions SPEAKER PRO 6.0 supports the import of LMS data. SPEAKER PRO 6.0 supports the import of spl, acoustical phase, impedance and electrical phase. The type of import file will be auto- matically detected. In order to import LMS data, the import directory has to be initialized. (IMPORT -> LMS -> INITIALIZE) e.g. C:\LMS\EXPORT Afterwards data can be imported as described already. The imported files can be shown by choosing the GRAPHIC EDIT in the DATA MENU. $3.1.2.27 The Imp import functions SPEAKER allows the import of measurements, carried out with the measureing system The Imp. SPEAKER supports the import of spl and impedance as well as acoustical and electrical phase. Speaker supports the import of the following files: *.FRD : frequency response, spl and acoustical phase *.ZMA : impedance and electrical phase *.ZFR : spl, impedance, electrical and acoustical phase Before the import of The Imp data can take place, the import directory has to be initialized. Import -> IMP -> Initialize The pre-adjustment of a 0 dB reference level is necessary. This level is initialized at 90 dB. e.g. c:\theimp\export Afterwards data can be imported as explained already. $3.1.2.28 CLIO import functions SPEAKER PRO 6.0 supports the import of CLIO data. SPEAKER PRO 6.0 supports the import of spl, acoustical phase, impedance and electrical phase. The type of import file will be auto- matically detected. In order to import CLIO data, the import directory has to be initialized. (IMPORT -> CLIO -> INITIALIZE) e.g. C:\CLIO\DATA\JOBS1 Afterwards data can be imported as described already. The imported files can be shown by choosing the GRAPHIC EDIT in the DATA MENU. $3.1.2.29 PC-AUDIO LAB import functions SPEAKER PRO 6.0 supports the import of PC-AUDIO LAB export data files. SPEAKER PRO 6.0 supports the import of spl, acoustical phase, impedance and electrical phase. In order to import CLIO data, the import directory has to be initialized. (IMPORT -> PC-AUDIO LAB -> INITIALIZE) e.g. C:\PCLAB Afterwards data can be imported as described already. The imported files can be shown by choosing the GRAPHIC EDIT in the DATA MENU. $3.2 Database The database consists of any data, necessary to calculate loud- speaker enclosures. Various search arguments can be entered to find drivers with praticularly specified data. The input of new data, using data sheets etc., or own TSP measurements (as described later) is possible. It is also possible to edit or extend any existing database. The SPEAKER PRO 6.0 database supports the following functions: - Creation of new database - Print-out of database - Display of list and selection of drivers - Free definitions of search arguments - Display of data files found - Graphic display of frequency response curves - Scrolling frequency response curves - Numerical display of frequency response curves - Calculation of spl and impedance using TSP - Free editing of database - Creation of new database using extracts of existing database The functions - Creation of new database - Loading of database - Print-out of database can all be found in the FILE menu. The following command buttons can be used in the database : Button Function ================================================================ > next file < previous file >| jump to next file matching search criteria |< jump to previous file matching search criteria << jump to begin of database >> jump to end of database Takeover taking over of currently displayed files and import of defined frequency response files More The second page of the data-sheet SearchArgu Definition of search arguments for the |< and >| functions Graph Display of frequency response curves Show Display of data-sheet (two pages) Some extra functions can be used in the EDIT DATA menu : Button Function ================================================================ Save Saving edited data file No Take over The edited file will be ignored New Adding of data files Measr. Calculation of TSP from a measurement List selection ============== The list selection allows the best view on any available data files. Select the files using cursor or mouse functions. The following special functions will be supported : Enter Function ================================================================ E e Editing of selected file A a Display of any available data G g Display of frequency response curves Return Taking over of data file and frequency response curves Right mouse button same as return Search ====== The search functions which are available in the DATA menu allow the quick finding of specified data files. To search such files choose -> Search criteria from the DATA menu. It is sufficient to enter fragments in the input boxes for type and manufacturer such as "V" for VISATON or "DSM" for DSM... dome drivers. After entering search arguments, quit the screen using ESC, and choose "Search normal display" or "Search list display". If the appropriate file or files are available, they will be displayed. Choose >| for multiple displays in the "Search normal display" mask. The "Search list display" mask will display a list of any files available, matching with the search argument. Edit data ========= New data can be entered, using the "Edit data" menu. Existing data can be edited by simply overwriting. The creation of new data files can be carried out with the "New" command. It is only possible to quit the mask by either "Save" or "No taking over" . In case of "No taking over" any overwriting of existing data files will be ignored. Any measured frequency response curves can be included to the database by entering the *.APL file name. This function provides the automatical import of the measurement files after saving the database file. The function Measr. allows the calculation of TSPs with respect to the impedance curve of a driver. Please also note the following chapter. Display/Editing of frequency response curves ============================================ The frequency response curves can be shown with the "Graphic editor" function. The cursor functions can then be used to edit the frequency response curves. The following functions are available: Key Function ================================================================ cursor up increase value cursor down decrease value page up high increase of value page down high decrease of value TAB select between different curves The menu "Numeric editor" allows the numeric editing of measurement values. Calculation of spl and impedance curves using TSPs ================================================== For any simulation in the project menu, the spl and impedance curves have to be available. In case that measurement curves are not available, they can be calculated, using TSPs. This also regards partly available curves. Creation of database extracts ============================= This function makes use of the search functions in order to create a new database. The new database will entirely consist of data files matching with the search criteria. It is for example possible to create a new database consisting only of DSM.... dome tweeters. In order to achieve this select VISATON and DSM as search arguments and then choose the "New DB view" menu. Enter the name for the new database in the dialog box and choose "Create" to create the new database. The new database can be loaded from the FILE menu. Graphic scrolling ================= The following functions are possible: button function ================================================================ + scroll forward to next frequency response curve - scroll backwards to previous frequ. resp. curve return take over current data file and frequency response curve ESC quit $3.2.4 Thiele Small parameter measurements After selecting MEASR. data, various TSP measurement methods can be entered. The program will then calculate the TSPs and add the data to the appropriate data file. The tool supports both, the weight- and the fixed-volume method. The VISATON TSP data have been gathered using a special measuring method, different to the methods described above. General measuring set-up : The following measuring equipment is necessary : - Sine-wave generator with constant voltage output - Frequency counter - Power-amp - AC-voltmeter with 200 mV range (20 mV range would be better) - Digital ohm-meter There are two different measuring methods : - Constant current measurement and - Constant voltage measurement The constant current method uses the following measuring set-up 旼컴컴컴컴커 旼컴컴컴컴컴� 1 k� � 쳐캑 쳐컴栢栢栢俳컴컴o컴컴컴컴컴컴o � � � � | | 쿞ine wave � 쿛ower amp � Voltmeter Driver 쿲enerator � � � | | � 쳐캑 쳐컴컴컴컴컴컴컴o컴컴컴컴컴컴o 읕컴컴컴컴켸 읕컴컴컴컴컴� In order to calibrate the measurement set-up, a 10 Ohm precision resistor is connected as load. The amplification of the power amp has to be adjusted until the voltmeter reading is exactly 100 mV. If this should not be possible, the 1 kOhm resistor can be reduced to 910 Ohms. The voltage drop can directly be converted in the impedance, using the following formula : R = [E] * 100 [Ohms) e.g. voltage drop = 10 mV -> impedance = 1 Ohm R = 0.01 * 100 Note : If the maximum output voltage of the generator is 10 V or more, no power amp will be needed. The constant voltage method uses the following measuring set-up 旼컴컴컴컴커 旼컴컴컴컴컴� 0.22 � � 쳐캑 쳐컴쩡컴栢栢栢俳컴쩡컴컴컴컴컴훟 쿞ine-wave � 쿛ower amp � � � | 쿲enerator � � � o--Voltmeter--o Driver � � � � | � 쳐캑 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴훟 읕컴컴컴컴켸 읕컴컴컴컴컴� In order to calibrate the measuring set-up, a 10 Ohm precision resistor has to be connected as load. The amplification of the power amp has to be adjusted until the voltmeter reading is exactly 100 mV. The impedance is reciprocal to the voltage. R = 1/(V) [Ohm] e.g. Measured voltage : 100 mV -> 0.1 V -> impedance : 10 Ohms Note: This measuring method requirs a power amp. Measurement : At first, the driver will be measured without test enclosure or added weight. The following parameters can be generated : - Re Ohmic resistance of the driver. This parameter can be measured with a digital Ohm-meter. -Fs Resonance frequency of the driver This parameter can be measred be altering the frequency of the generator until the first impedance maximum is found. The impedance at the resonance frequency is Zres. -Zres See Fs -f1 f1 is the frequency below resonance where the value of the impedance is equal to the square root of (Zres*Re). Note : After entering the parameters Zres and Re in the input mask, f1 will be calculated automatically. -f2 f2 is the frequency above resonance where the value of the impedance is equal to the square root of (Zres*Re). Note : After entering the parameters Zres and Re in the input mask, f1 will be calculated automatically. -d d is the diameter of the cone. The diameter is measured from the middle of the surround. The measured values have to be entered in the input mask. After- wards the following measurements can be generated by using the test volume - or the adding weight method. The method can be selected in the menu. The selected method will be displayed in the top right corner of the mask. Measurement with test-volume In order to measure the TSP's of a driver, the speaker has to be mounted i a specific sealed and undamped enclosure. The volume for drivers up to 17cm should be 5-10 liters. For larger drivers, the volume has to be increased respectively. The impedance response curve can be used to generate the following data : - Fs_new Shifted resonance frequency of the driver. The frequency can be found by altering the frequency of the generator until an impedance maximum is found. Please write down the fre- quency and the value of the impedance. (Zres_new) - Zres_new see above chapter Fs_new Enter the values - Vol The volume of the sealed enclosure After choosing calculate, the resulting TSP's will be calculated and entered in the RAM database. Please note that the entered data have to be saved, by choosing the save data function of the mask. Adding weight measuring method In this measuring method, the TSP's will be calculated by adding a specified weight to the moved mass of the cone. The best way of adding weight is to use adhesive rubber paste or small magnets with a specified weight. The weight of the added mass should be equivalent to the moved mass of the driver. The following parameters can be generated from the new impedance curve : - Fs_new The shifted resonance frequency of the driver. The frequency can be found by altering the generator frequency until the impedance maximum is found. Write down the frequency and the value of the impedance maximum. - Zres_new The frequency at the new impedance maximum. Enter the values. - Ma Added mass By choosing calculate, the resulting TSP's will be calculated and added to the RAM database. Please note that the data have to be saved, by choosing the appropriate command of the mask. $3.3 Graphic editor and Numeric editor This program point allows a pre-selection of driver data before starting a speaker project. It is possible to pre-view the graphic or numeric frequency response curves of a driver before starting a project or furthermore to edit the displayed data. Any data displayed will be saved in a file with the extention *.APL . Any available data of frequency response curves can be viewed or edited. The graphic mode allows an editing method similar to equalizer functions. Using the keys, cursor up, cursor down, page up and page down, frequency response curves can be edited. The cursor functions left and right can be used to select the frequency of the curve to be edited. The HOME and END functions of the keyboard can be used to go to the begin or the end of a fre- quency response curve. The TAB key allows the switching between diffrent curves. The position of the cursor will be marked by a small cricle. All four frequency response curves will be displayed in diffrent colors. After initializing a new curve, the impedance will be 8 Ohm linear, the spl 90 dB and the phase 0 degree. The frequency response curves can be loaded in the "File"menu. The frequency response curves can be edited by +/- 3dB using the page up/down- or +/- 0.25 dB using the cursor functions. The impedance curve can be edited by +/- 2 Ohms, using the page up/down functions or +/- 0.1 using the cursor functions. Frequency response curves numeric As an alternative to the graphic mode, the frequency response curves can also be edited in the numeric mode. Any value can be selected and edited by using mouse or cursor functions. $3.4 Simulation / Project This is the most powerful tool of the software package. It allows the simulation of a complete multi-way speaker system, consisting of up to five ways. The simulation respects the enclosure- , the crossover- and the individual driver functions, specified in the database, respecting spl, impedance, electrical- and acoustical phase. The tool can therefore be judged as a cost- and time saving instrument for the development of speaker systems. The effect of the enclosure can be left out of the simulation if only the frequency response curves of drivers, specified in the database, should be taken into consideration for the con- struction of crossover networks. The import of computer-aided measurements is possible, as well as individual data editing. The description of a multi-way speaker is defined as project. A project therefore comprises the speaker data and frequency response curves, the enclosure functions and the crossover networks specified for up to five ways. The professional speaker designer can use the existing measurement facilities of his own lab, and the amateur has the advantage to use the VISATON database or to edit driver data for the development of individual speaker projects. Please note the different modes for the import of impedance curves. 1. Unspecified This mode should be used if the impedance curve has been measured a specified enclosure. 2. Sealed / Vented / Bandpass If one of the above mentioned modes is aplied, the impedance of the driver will be simulated in accordance to the selected and specified enclosure. The influence of the enclosure on the frequency response curves will be simulated and hence respected for further project operations. This includes the electrical and acoustical feed- back functions of the selected enclosure type. The resulting frequency response curves will be displayed. Any parameters can be alterd to judge the effect on the frequency response curves of a multi-way speaker system. The following parameters can be defined : - Woofer with specified enclosure and crossover - Low-midrange with specified enclosure and crossover - Midrange with specified enclosure and crossover - Highrange with specified enclosure and crossover - Super-highrange with specified enclosure and crossover The sequence of the specified drivers can be altered by the user e.g. in order to define a second woofer instead of using a super-tweeter, meaning that all five possible ways of the speaker simulation can be individually defined. The program also supports a parallel conection of drivers, regarding both, spl and impedance, of up to 99 drivers ! It is either possible to define a parallel connection of drivers selecting "Parallel" or to define a bi-wiring connection by selecting "Alone". The sound origin of the driver will be taken into consideration, when simulating multi-way systems. Zobel- and Rc networks can be calculated or defined. Input boxes will allow to describe the project. Please note that at first a new project has to be defined or an existing project has to be loaded. If the "New project" menu has been chosen, any new input variables can be defined. Note : If the enclosure effects should not be considered for the simulation, the "Take over data" function can be ignored. $ Graphic print-outs A hard copy print-out of graphic displays is possible if an IBM compatable printer is used and the appropriate driver is available. For VGA, EGA and CGA cards, the GRAPHICS.COM comand should be entered under DOS before starting SPEAKER PRO 6.0 . If the print-out should not be possible, you can install SPEAKER PRO 6.0 under WINDOWS. Please read the instructions of your WINDOWS version in your WINDOWS manual. $5.1 Print-out of text and masks The ASCII code is used for printing out text files and masks, using the hard copy command of your computer. $7. Licence agreements The licence agreements considering the use of the SPEAKER PRO 6.0 software package are printed on page 24 of the Quick Introduction manual.