ALFAtron ALF-DSP88-U Скачать руководство пользователя страница 42 | Manualshive

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ALF-DSP88-U

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Содержание ALF-DSP88-U

Страница 1: ...www alfatronelectronics com ALFATRON ELECTRONICS GmbH Germany ALF DSP88 U 8x8 Digital Sound Processor All Rights Reserved Version ALF DSP88 U V1 1 22022022...

Страница 2: ...Floating Point DSP 111 2 5 Audio Flow 133 2 6 Typical System Application 144 3 Software 155 3 1 Software Installation 155 3 2 Using the Software 16 3 3 Audio Module Parameters 16 3 3 1 Input Source 1...

Страница 3: ...PIO Setting 31 3 4 4 Group Setting 34 3 4 5 Panel Setting 35 3 4 6 Help Menu 37 4 Control 38 4 1 External Control Programmer 38 4 2 Control Protocol 38 4 3 Serial Port to UDP RS232 To UDP 40 5 FAQs 41...

Страница 4: ...Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a commercial installation Operation of this equip...

Страница 5: ...rotect the power cord so that it will not be trampled or jutted particularly the plug the socket and the connections of cord and device 11 Please use the accessories designated by the manufacturer 12...

Страница 6: ...er input or output terminals Unbalanced Audio Connection RCA audio connections and 1 4 inch TS audio connections are unbalanced connections A multi strand shielded conductor may be installed on both e...

Страница 7: ...nput Impedance Balanced Connection 9 4K Output Impedance Balanced Connection 102 System Delay 3ms Inputs 8 Balance Line Mic Inputs on Phoenix Connections Outputs 8 Balance Line Outputs on Phoenix Conn...

Страница 8: ...tilation The recommended highest operating ambient temperature is 30 86 Make sure that there is no obstruction on both sides a gap of at least 5 08cm 2 inches shall be reserved Please do not cover the...

Страница 9: ...s After being activated the logic output will be low 0V and the internal voltage will be high 5V when not activated You may directly power and light up external LEDs The logic output can be driven by...

Страница 10: ...access the controls allowed by the engineer or designer 2 2 Audio Input Section The Alfatron ALF DSP88 U supports up to 8 fixed analogue audio inputs which can be connected via removable balanced pho...

Страница 11: ...dio processors enabling 32 bit and 40 bit floating point processing which can be compared to 40 bit floating point processing of other devices Floating point processing provides prominent advantages f...

Страница 12: ...always significantly superior to 24 bit fixed point processing Through expanded 40 bit accurate processing 33 bit storage signals can be achieved Practical Significance What s the practical significa...

Страница 13: ...ALF DSP88 U 13 2 5 Audio Flow...

Страница 14: ...fiers speakers and other audio peripherals like USB audio from a PC so as to process all audio signals and advanced algorithms like AEC in a typical conferencing system Additional audio matrixing auto...

Страница 15: ...ftware Installation Visit the device web page address 169 254 10 227 1 Download software from the Alfatron website and install files 2 Double click the downloaded file and install by following the ins...

Страница 16: ...wn needs after the connection the indicator will flash each processor supports simultaneous connection and control for up to four users 3 3 Audio Module Parameters There are two ways to access the aud...

Страница 17: ...ght clicking each fader on the main menu Group Setting Open the group setting interface window Minimum and Maximum Gains Limit the maximum and minimum values of a channel After it is commissioned if y...

Страница 18: ...the gain to be restored to normal when the input signal drops lower than the threshold No matter the starting time or the release time it just helps to reduce the speed of gain attenuation That is to...

Страница 19: ...at the compressor does not attenuate the signal in proportion The adjustable range of compression ratio is 1 20 Attack Time Release Time In order to maintain natural oscillation it is generally accept...

Страница 20: ...hreshold and Release Time In terms of signal processing occasional clipping will be solved with a limiter while the signal level will be attenuated in terms of frequent clipping 3 3 4 Automatic Gain C...

Страница 21: ...zer can be used to change the tone of the signal The equalizer has the following control parameters Fig 3 6 Equalizer Type Parametric EQ is the default setting High and low shelf filters and high and...

Страница 22: ...esign defects or improve the sound transmission gain in a way exceeding the system s physical limitations The feedback suppressor module automatically detects and inhibits audio feedback in the sound...

Страница 23: ...feedback Each notching filter has three modes auto manual and fixed modes When Manual mode is set for the filter the gain can also be manually set When Fixed mode is set the filter always works and wi...

Страница 24: ...ON OFF button to turn the auto mixer on or off Gain Controls the main output volume of the auto mixer Slope The slope control influences the attenuation of lower levels If the slope is high the atten...

Страница 25: ...t the slope setting of the main control parameters influence gain difference brought by the priority weight of channels If the slope is set at 3 0 then one priority level difference will result in a g...

Страница 26: ...ggressive 15dB dB here refers to the reduction in decibel level of the suppressed noise The bigger the value the more degradation of voice signal is caused therefore use noise suppression very cautiou...

Страница 27: ...s Gain The Gain setting influences the increase and attenuation of each filter band Type There are three types of filters to choose from Bessel Butterworth and Linkwitz Riley Butterworth has the flatt...

Страница 28: ...ternate units provided to milliseconds to set a delay time based on physical distance 3 3 13 Output Phase 180 degree audio signal phase inversion Mute Set output mute unmute Users can use right button...

Страница 29: ...ill be installed automatically After installation the USB soundcard will be accessible in the computer soundcard list as shown in the figure below Users may select Cretone USB Soundcard in the Sound S...

Страница 30: ...offline mode click the pop up file dialog and open an existed default document with suffix uma or right click on the default document to open DSP exe Save as refers to saving presets on the applicatio...

Страница 31: ...ng as startup preset Each boot will start with it Another is selecting previous upload preset and taking the last preset before power outage as the preset for next startup 3 4 3 GPIO Setting Open the...

Страница 32: ...change to preset when jump type of hardware GPIO port and trigger type of software setting are consistent Routing Trigger types Same as above Input and output Select input channel routing correspondi...

Страница 33: ...and current while an encoder is digital and transmits binary codes of 0 and 1 Output GPIO Setting Preset Output types High level Low level Preset Corresponding GPIO port outputs high level or low lev...

Страница 34: ...on There are 4 groups in total 1 device maximum number of channels can be selected for each group The maximum number of channels is determined by the device type you purchased Channels are set into on...

Страница 35: ...nd then double click to edit it Please note that there is a small circle on both panel and device Click the circle and then draw a line select target device the connection between the two devices is e...

Страница 36: ...ash which indicates that it entered edit mode of that menu 3 Turn the Rotary encoder left or right to change value 4 Press the Rotary Encoder again to exit the edit mode and go back to the main menu K...

Страница 37: ...configured for preset or command recall Command functions data strings comes from the central control command Please refer to section 5 3 4 6 Help Menu 1 Central command Open the central control comma...

Страница 38: ...the latest control protocol adopts variable length and is fully compatible with old fixed length control protocols In protocols the fourth byte is used to distinguish versions 0 indicates V1 version...

Страница 39: ...ll scenario numbers 0 15 in byte 5 and 0 in byte 6 12 Note Central control command of V1 version can acquire code through software menu bar of PC For customized development please use this protocol ru...

Страница 40: ...is a return field to read GPIO level value on devices for input settings RS232 RS485 Byte 5 Byte 6 Byte 7 Byte 8 Byte 9 132 Control Type Data Length Reserved Reserved Data Byte 5 is 2 for RS232 contr...

Страница 41: ...As shown in the below figure central control hosts translate network commands through serial ports to control any network device 5 FAQs 1 How to restore factory setting Connect the processor to a com...

Страница 42: ...ALF DSP88 U 42...

Страница 43: ...Options Session Options Enable Local Echo as shown in the picture below Appendix A Module ID Distribution Module Name ID Module Name ID Input source 299 Output Channel 1 32 High Low Pass 167 198 Inpu...

Страница 44: ...x7 Sine Wave Gain Size 0x4 Invert 0x8 Channel Name 0x5 Sensitivity 0x9 Invert 0x6 Gain Compensation 0x10 Gain Compensation 0x7 Link 0x11 Link 0x8 Channel Level 0x12 Channel Level Expander 0x1 Switch D...

Страница 45: ...d 0x5 High Pass Gain 0x9 Feedback 0x11 Low Pass Switch Auto Gain 0x1 Switch 0x12 Low Pass Type 0x2 Threshold 0x13 Low Pass Slope 0x3 Target Threshold 0x14 Low Pass Frequency 0x4 Ratio 0x15 Low Pass Ga...

Страница 46: ...ty service 2 What the warranty does not cover servicing available for a fee Warranty expiration Factory applied serial number has been altered or removed from the product Damage deterioration or malfu...

Страница 47: ...warranty does not cover the cost of normal maintenance Failure of the product due to insufficient or improper maintenance is not covered 1 4 The Company does not warrant that the product covered hereb...

Страница 48: ...product from or into any installation The Company will not be responsible for any costs related to any setting up this product any adjustment of user controls or any programming required for a specif...

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