Antex electronics SX-11 Скачать руководство пользователя страница 29 | Manualshive

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Antex electronics SX-11 Скачать руководство пользователя страница 29

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UTILIZING DIGITAL AUDIO COMPRESSION UNDER WINDOWS

At this point in time Microsoft is in the early stages of supporting various compression formats for
waveform audio under Windows. An update to the multimedia standards was released that defines the
methods of passing data about compressed files as well as a preliminary list of recognized compression
formats. However, due to the fact that Antex is the only manufacturer to offer multiple compression
formats today, there has been a lack of motivation for software developers to create applications that
take advantage of digital audio compression. As a result, there are currently no Windows applications
that can demonstrate the full capabilities of Antex digital audio hardware.

We have provided a Windows demo, ANTEXDEM.EXE to allow you to access the extended
compression functionality of the Antex adapters.

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Содержание SX-11

Страница 1: ...9 SX 11 SX 12a SX 20 SX 22 SX 23e SX 26 Digital Audio Adapter User s Manual For DOS and Windows January 25 1996 ANTEX ELECTRONICS CORPORATION 16100 SOUTH FIGUEROA STREET GARDENA CALIFORNIA 90248 9000...

Страница 2: ...6 11 DRIVER INSTALLATION 16 DISKS 16 WINDOWS DRIVER INSTALLATION 16 WINDOWS DRIVER CONFIGURATION 17 DOS DRIVER INSTALLATION 17 USING DOS DEMONSTRATION SOFTWARE 19 PROBLEMS RUNNING THE DEMO 23 USING WI...

Страница 3: ...Connector Locations 11 Figure 6 SX 22 23e and 26 Connector Locations 13 Figure 7 SX 22 23e and 26 Balanced Connectors 14 Figure 8 SX 22 23e and 26 Digital Connectors 15 Figure 9 DOS Demo Environment 2...

Страница 4: ...audio technology will be utilized in the transmission of real time audio signals on a widespread basis But what is digital audio In essence digital audio is a technological process whereby an analog...

Страница 5: ...sampling frequency the sample and hold circuit slices the input signal allowing the quantizing circuit to generate a digital number equal to the closest of the 65 536 possible discrete values quantiza...

Страница 6: ...g output signal whose waveshape is a very close approximation of the original analog input signal The foregoing is a very brief and of necessity oversimplified explanation of how digital audio works F...

Страница 7: ...formation about configuring the adapter before plugging it into the slot JUMPER SETTINGS These SX series adapters have four hardware jumpers They are JP1 JP2 JP3 and JP4 which are used for multiple bo...

Страница 8: ...S 6dBV max digital clipping with an impedance of 470 ohms and a load impedance of 10k ohms SX 7 There are four external connectors located on the SX 7 audio board s metal mounting bracket See Figure 4...

Страница 9: ...s Headphones DB 9 Balanced Out Unbalanced Right Unbalanced Left SX 7 JP1 1 LEFT RIGHT GND Pin Assignment 1 Gnd 2 3 nc 4 Right Out 5 Left Out 6 nc 7 nc 8 Right Out 9 Left Out DB 9 Female Balanced Analo...

Страница 10: ...11 audio board s metal mounting bracket See Figure 5 7 8 for more information on the SX 9 SX 11 connectors Audio Output Line Balanced Nine pin D connector 0 to 26dBu digital clipping software selectab...

Страница 11: ...X 26 connectors Audio Input Line SX 22 Balanced Nine pin D connector 10dBu 4dBu and 16dBu software selectable with an impedance of 20k ohms Pin Assignment 1 Ground 2 nc 3 Out AES EBU or S PDIF 4 nc 5...

Страница 12: ...6dBu digital clipping software selectable with 1dBu resolution with an impedance of 20k ohms Unbalanced 1 8 stereo mini jack 2VRMS 6dBV max digital clipping with an impedance of 20k ohms and a load im...

Страница 13: ...al AES EBUI O SX 22 Balanc ed AnalogHeader DigitalHeader Headphones Adapter Jumper Block Balanced I O Digital AES EBUI O SX 23e SX 26 Balanc ed AnalogHeader DigitalHeader Unbalanced In Unbalanced Out...

Страница 14: ...8 9 Left Unbalanced Out Female RCA Right Left Right Unbalanced In Female RCA n n n n n n n n n n n n n n n n 2 4 6 8 10 12 14 16 1 3 5 7 9 11 13 15 Balanced Analog Header Figure 7 SX 22 23e and 26 Ba...

Страница 15: ...uld be connected to Ground for AES EBU operation and left floating for S PDIF Figure 8 SX 22 23e and 26 Digital Connectors SX22 S PDIF cable wiring diagram 1 3 5 2 4 6 7 pin Mini DIN Male Plug 7 Back...

Страница 16: ...tex Mixer Applet and DLL ANTEXDEM EXE Antex Demo OEMSETUP INF Windows definition file for manual driver installation SETUP EXE and supporting files Windows driver installation utility README TXT optio...

Страница 17: ...dio Driver Setup displays the adapter types assigned to adapters 1 4 Change the type by using the drop down menus for each adapter Information about the number of devices I O address and interrupt num...

Страница 18: ...A 3 Type INSTALL driveletter path to copy all files from the disk to a subdirectory on your hard disk ex INSTALL C ANTEX REMEMBER When the Windows driver installation is complete Windows should resta...

Страница 19: ...disk using the DOS copy command all files must be in the same directory 2 Install your mouse driver 3 Install the driver by running SX25 EXE 4 Run the demo ADG EXE A I O Address I Interrupt ex C ADG A...

Страница 20: ...coding audio data PCM16 16 Bit Pulse Code Modulation uncompressed PCM8 8 Bit Pulse Code Modulation uncompressed PCMU8 8 Bit Pulse Code Modulation uncompressed This format is compatible with Microsoft...

Страница 21: ...t X Compression Available on SP 100 equipped adapters only i e SX 11 SX 26 F File Audio file name to record or play I FileFormat The file format for recording playback Choices are ATX The Antex defaul...

Страница 22: ...lows you to append new recorded material onto the end of an existing file P Play Play a file R Record Record a file M Monitor Monitor the record channel equivalent to Set Record command E SetPlay Queu...

Страница 23: ...the driver is loaded 2 Make sure you type the correct I O and interrupt locations on the command line of ADG 3 Make sure to use the HEX value for the I O 4 Make sure syntax of ADG line is correct 5 M...

Страница 24: ...ic compression format the program will display a message box similar to Figure 11 Compression This list box selects specific compression formats for recording and displays the compressed format of the...

Страница 25: ...lection of the specific board to be used for recording and playback File This button allows for selection of a specific file to be used for recording or playback Once this button has been pressed the...

Страница 26: ...ding During recording this button changes to Stop If a file has not been selected the Save As dialog box appears and allows selection of a specific file to record into Volume These controls allow chan...

Страница 27: ...g or playing on the individual devices available Clicking on the REC PLAY button lets you select the destination for each input device SOUND LEVEL METERS to show input or output levels when recording...

Страница 28: ...C if you want to record audio to the hard disk MIXER DEVICES LINE IN jack WAVE Digital audio playback Note This device is playback only so its Mixer mode is always PLAY REC IN Record volume control Th...

Страница 29: ...f recognized compression formats However due to the fact that Antex is the only manufacturer to offer multiple compression formats today there has been a lack of motivation for software developers to...

Страница 30: ...IB CDIC Dolby AC 2 MPEG MSADPCM A Law m Law apt X SX 5e P P P P P P SX 7 P P P P P P SX 9 P P P P P P P R P P SX 11 P P P P P P P R P P P SX 12a R P R P R P R P R P SX 20 R P R P R P R P R P R P SX 22...

Страница 31: ...dual channel or sc mode single channel kB Kbits per second per channel E 1 crc error checking or 0 no crc error checking C 1 copyright protected or 0 not copyright protected O 1 original or 0 copy Em...

Страница 32: ...6 0 160 4 8 Layer II 32 Khz 44 1 Khz 48 Khz Bitrate kbits s Compression ratio Bitrate kbits s Compression ratio Bitrate kbits s Compression ratio 32 16 32 22 1 32 24 48 10 7 48 14 7 48 16 56 9 1 56 12...

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