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Antex electronic SX-33E, SX-33B user manual Compression, Channels, VU Meters, Wave Device

Models: SX-33B SX-3 SX-33 SX-33E

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Compression:

Figure 8. Message Box reporting an unavailable compression format or an invalid sample rate.

Compression:

This list box selects specific compression formats for re- cording, and displays the compressed format of the file currently playing. Each audio board has specific compres- sion formats that it supports. If the compression format selected is unavailable on the audio board, a message box similar to Figure 8 will appear.

To select the compression ratio of an MPEG file, double click on MPEG in the Compression list. A drop-down menu displays the bitrates available for the current sample rate.

Channels:

These buttons select mono or stereo recording, and dis- play the number of channels of the current file.

VU Meters:

The VU meters show the relative signal of the current file that is being recorded or played.

Wave Device:

If your driver is configured for dual devices or your com- puter has more than one Antex audio board, this drop down list box will allow selection of the specific de- vice/board to be used for recording and playback. Each file must be assigned a unique device/board.

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Antex electronic SX-33E, SX-33B user manual Compression, Channels, VU Meters, Wave Device

Contents

January 18, ANTEX ELECTRONICS CORPORATION 16-BITPRO SOUNDSX-3 SX-33 SX-33b SX-33e 16100 SOUTH FIGUEROA STREET GARDENA, CALIFORNIATABLE OF CONTENTS FIGURES ABOUT DIGITAL AUDIO INTRODUCTIONIn essence, digital audio is a technological process whereby an analog audio signal produced when sound waves in the air excite a microphone is first converted into a continuous stream of num- bers or digits. Once in digital form, the signal is extremely im- mune to degradation caused by system noise or defects in the storage or transmission medium unlike previous analog sys- tems. The digitized audio signal is easily recorded onto a variety of optical or magnetic media, where it can be stored indefinitely without loss. The digitized signal is then reconverted to an analog signal by reversing the digitizing process. In digital audio rec- ord/playback systems, each of these two functions is performed separately. In digital audio signal processing systems where no record/playback function occurs both analog-to-digitaland digital- to-analogconversion processes occur simultaneously. A variety of techniques are possible, but the most common method by which audio signals are processed digitally is known as linear pulse code modulation, or PCM. Lets take a brief look at how PCM works Figure 1. Analog-to-DigitalConversion Page Figure 2. Digital-to-AnalogConversion JUMPER SETTINGS ADAPTER INSTALLATIONMINIMUM HARDWARE RECOMMENDED Figure 3. Setting JP7 for audio IRQx CONNECTIONS SX-3/SX-33/SX-33e Z1/Z1eAudio Input Line MIDI/Joystick Breakout Connector Z1/Z1e OnlyMicrophone Audio OutputDRIVER INSTALLATION DISKS WINDOWS DRIVER CONFIGURATION Z1/Z1e only WINDOWS DRIVER INSTALLATION3.To set adapter type Test new settings by selecting TestCD-ROMDRIVER INSTALLATION Z1/Z1e ONLY DOS DRIVER INSTALLATIONUSING DOS DEMONSTRATION SOFTWARE Q-Quit Figure 6. DOS Demo EnvironmentC-Channels T-FormatF-File ISO/MPEG-1BITRATES & FORMATA-SampleRate I-FileFormatRec Vol dB Left Right Play Vol dB Left RightS-Start S-StopD-Append P - PlayCenter of Screen - Mixer PROBLEMS RUNNING THE DEMOBottom Right of Screen Figure 7. The Antex Demo Window USING WINDOWS DEMONSTRATION SOFTWARESample Rate Channels CompressionVU Meters Wave DevicePlay/Stop Figure 9. File Open dialog box FileRecord/Stop Customer support is available from Antex @ VolumeANTEX MIXER Figure 10. Antex Mixer RECORD MODE MIXER BUSESPLAY MODE Feedthrough MIXER DEVICESZ.WAV Wavetable synthesizer SYNTH OPL3 FM SynthesizerNote Optional hardware is required WAVE Digital audio playbackUTILIZING DIGITAL AUDIO COMPRESSION UNDER WINDOWS Audio Adapter Compression Capabilities Figure 11. Z1/Z1e Connector Layout CONNECTOR DESCRIPTIONANTEX SERIES MODEL Z1 AND Z1E Z1/Z1e2. Output Header - J3 1.Joystick/MIDI Connector - J104. Microphone Header - J5 3. AUX/CD-ROMHeader - J45.SCSI CD-ROMHeader - J1 6.Synthesizer Daughtercard MIDI Header - J28.Z.WAV Sound Module DSP Header - J12 7.Z.WAV Sound Module MPU-401Header - J119. C52 DSP Emulation Header - J13 10. C31 DSP Emulation Header - J14ANTEX SERIES MODEL SX-3/33/33B/33E Figure 12. SX-3/33/33b/33eConnector LayoutSX-3/SX-33/SX-33b/SX-33e CONNECTOR DESCRIPTION2. AUX Header - J4 1. Output Header - J33. Microphone Header - J5 SETTING JUMPERS ON EARLY MODEL Z1/SX-34.Z.WAV Sound Module MPU-401Header - J11 5.Z.WAV Sound Module DSP Header - J12Old Jumper Current JumperNumber Figure 13. Jumper Number Conversion TableISO/MPEG-1BITRATES & FORMAT EXTENSIONS Layer WINDOWS NT & Z1E SCSI IRQ JUMPER NEW Z1/Z1E/SX-3/SX-33/SX-33ESAMPLE RATESTOLL FREE 800 PHONE 310 FAX 310 BBS TECHNICAL/ORDERING INFORMATIONANTEX ELECTRONICS CORPORATION 16100 S. FIGUEROA STREET GARDENA, CA