Polycom {name} manuales

Manual De Usuario

Tabla de contenidos

1
11
Introduction
11
2
15
SoundStructure Product Family
15
SoundStructure Architecture Overview
15
OBAM™ - One Big Audio Matrix
17
SoundStructure C-series Products
19
C-Series Input Processing
21
Conferencing Version
23
Sound Reinforcement Version
23
Recording/Ungated Version
24
Recording/Ungated - Bypass
24
Recording/Ungated - Line Input
25
Recording/Ungated - Conferencing
25
Recording/Ungated - Sound Reinforcement
26
C-Series Matrix Crosspoints
26
C-Series Output processing
27
C-Series Submix Processing
28
C-Series Acoustic Echo Canceller References
29
SoundStructure SR-Series Products
30
SR-Series Input Processing
33
Noise Cancelled Version
35
Sound Reinforcement Version
36
Recording/Ungated Version
36
Recording/Ungated - Bypass
37
Recording/Ungated - Line Input
37
Recording/Ungated - Noise Cancelled
38
Recording/Ungated - Sound Reinforcement
38
SR-Series Matrix Crosspoints
38
SR-Series Output Processing
39
SR-Series Submix Processing
40
Telephony Processing
41
3
45
SoundStructure Design Concepts
45
Introduction
45
Physical Channels
46
Physical Channel Numbering On A Single SoundStructure Device
47
Physical Channel Numbering With Multiple SoundStructure Devices
47
Physical Channel Summary
53
Virtual Channels
54
Virtual Channel Summary
55
Virtual Channel Groups
56
Virtual Channel Group Summary
60
Telephone Virtual Channels
60
Logic Pins
60
Physical Logic Pins
61
Logic Inputs
63
Analog Gain Input
63
Logic Outputs
64
Control Virtual Channels
64
Control Array Virtual Channels
65
IR Receiver Virtual Channel
67
4
69
Creating Designs with SoundStructure Studio
69
SoundStructure Studio
71
Step 1 - Input Signals
71
Step 2 - Output Signals
74
Step 3 - Device Selection
75
Step 4 - Uploading Or Working Offline
76
Online vs. Offline
78
5
81
Customizing SoundStructure Designs
81
Wiring Page
81
Edit Devices
84
Channels Page
85
Editing Virtual Channels
87
Creating Virtual Channel Groups
88
Input Signals
92
Input Signal Meters
93
Meter Types
94
Microphone level_post
95
Line Input level_post
96
Telephony leve_pre and level_post
96
Conference Link Channels
97
Input Channel Controls
98
Analog Signal Gain
99
Mute
100
Phantom Power
100
Ungated Type
101
Delay Type
104
Delay Compensation
106
Trim
107
Equalization
108
Feedback Elimination
110
Acoustic Echo Cancellation (AEC)
112
Noise Cancellation
113
Automatic Gain Control (AGC)
114
Dynamics Processing
115
Compressors And Limiters
117
Gates and Expanders
118
Automatic Microphone Mixing
119
Automixer Groups
119
Automixer Controls
119
Gating Automixer Parameters
120
Gain Sharing Automixer Parameters
123
Delay
123
Fader
123
Signal Generator
125
Output Signals
126
Dynamics
127
Equalization
127
Delay
129
Submix Signals
130
Dynamics
130
Equalization
130
Delay
132
Fader
132
Matrix Page
132
Adjusting Crosspoints
134
Mute
136
Invert
136
Input Processing Path
136
Pan
138
Balance
139
Matrix summary
139
Telephony Channels
140
Input Gain
141
Noise Cancellation
142
Automatic Gain Control (AGC)
142
Dynamics
143
Equalization
143
Fader
145
Delay
145
Telephone Controls
145
Phone Connect
146
Auto Answer
146
Entry Tones
146
Exit Tone
146
Ring Tone
147
Auto Hang-up
147
DTMF Gain
147
Tone Gain
147
Dial Tone Gain
147
Flash Delay
147
Country Code
147
Line Voltage and Loop Current
148
6
149
Connecting Over Conference Link2
149
Physical Connections
149
Polycom HDX Integration
150
Designing With The Polycom HDX Video Codec
151
Input Channels From The Polycom HDX
152
Processing On The Signals The Polycom HDX Sends To SoundStructure
154
Output Channels To The Polycom HDX
155
Signal Routing Inside The Polycom HDX
156
Mute Control
157
Advanced Muting Applications
158
Volume Control
159
Designing With HDX Digital Microphone Arrays
160
Digital Microphone Cabling Requirements
161
Digital Microphone Firmware Updates
162
Detecting CLink2 Devices
164
Digital Microphone Array Example
164
Assigning Digital Microphone Array Channels To Physical Inputs
167
Digital Microphone Array Numbering
169
Installation Options
171
Summary
174
7
177
Installing SoundStructure Devices
177
Configuration Files
177
Wiring The Devices
178
Uploading A Configuration File
181
Downloading A Configuration File
183
Updating Firmware
183
Configuring The Signal Gains
186
Input Signal Level Adjustment
186
Signal Meters
187
Room Gain
188
Reducing High Room Gain
189
Telephony Signal Levels
190
Output Signal Levels
192
Setting Amplifier Levels
193
Presets
196
Full Presets
196
Partial Presets
196
Preset Operation
197
Power-On Full Preset
197
Preset Names
198
Number Of Presets
198
Saving Presets
198
Virtual Channels And Groups And Presets
200
Creating Partial Presets
200
Reordering Entries In A Partial Preset
203
Running Presets
204
Full Presets
204
Partial Presets
204
Removing Presets
205
8
207
Network Management
207
Connecting To The Device
207
LAN Interface
207
Dynamic IP Addresses
208
Static IP Addresses
209
Assigning A Static IP Address Via Ethernet
209
Assigning A Static IP Address Via The API
209
Setting The Time Server
211
Control And Command Sessions
211
SoundStructure Device Discovery
212
AMX Beacon
213
RS-232
213
Configuring And Accessing The Logs
214
9
217
Advanced Applications
217
1 Microphone And Mono Video Conferencing
217
SoundStructure Studio Steps
218
Step 1 - Select Inputs
218
Step 2 - Select Outputs
219
Step 3 - Select Equipment
219
Step 4 - Work Offline Or Online
220
Channels Page
220
Matrix Settings
222
Wiring Information
222
Controlling The System
223
Mute
223
Volume Control
224
4 digital Array Microphones And A SoundStation VTX1000
225
SoundStructure Studio Steps
227
Step 1 - Select Inputs
227
Step 2 - Select Outputs
228
Step 3 - Select Devices
228
Step 4 - Work Offline Or Online
229
Matrix Settings
229
Channels Settings
231
Wiring Information
234
Controlling The System
235
8 Microphones, Video, And Telephony Application
236
SoundStructure Studio Steps
237
Step 1 - Select Inputs
237
Step 2 - Select Outputs
237
Step 3 - Select Devices
238
Step 4 - Work Offline Or Online
238
Matrix Settings
238
Channels Settings
240
Wiring Information
242
Controlling The System
242
Mute
242
Volume Control
243
Telephone Functions
243
Two PSTN Line Positional “Receive” Audio Conferencing
244
SoundStructure Studio Steps
245
Step 1 - Select Inputs
246
Step 2 - Select Outputs
246
Step 3 - Select Equipment
247
Step 4 - Work Offline or Online
247
Matrix Settings
247
Channels Settings
250
Wiring Information
252
Controlling The System
252
Mute
252
Volume Control
253
Telephone Functions
253
Customizing The Phone Routing
253
8 Microphones And Stereo Video Conferencing
255
Channels Settings
260
Wiring Information
262
Controlling The System
262
8 Mics With The Polycom HDX Video Conferencing System
263
SoundStructure Studio Steps
263
Step 1 - Select Inputs
264
Step 2 - Select Outputs
264
Step 3 - Select Devices
265
Step 4 - Work Offline Or Online
265
Matrix Settings
265
Channels Settings
266
Wiring Information
268
Controlling The System
268
Mute
268
Volume Control
269
Telephony
269
8 Mics With Reinforcement Of Wireless And Lectern Mics
270
SoundStructure Studio Steps
271
Matrix Settings
272
Channels Settings
274
Wiring Information
280
Controlling The System
280
16 Mics With 6-Zone Sound Reinforcement
282
SoundStructure Studio Steps
283
Step 1 - Select Inputs
283
Step 2 - Select Outputs
284
Step 3 - Select Equipment
284
Step 4 - Work Offline Or Online
285
Matrix Settings
286
Channels Settings
290
Wiring Information
291
Controlling The System
292
Room combining application with two rooms
294
Combined Mode
295
Split Mode
296
SoundStructure Studio Steps
297
Step 1 - Select Inputs
297
Step 2 - Select Outputs
298
Step 3 - Select Equipment
298
Step 4 - Work Offline Or Online
299
Combined Room Settings
300
Split Room Settings
303
Wiring Information
306
Controlling The System
307
10
309
TroubleShooting
309
Audio Troubleshooting
309
Local participants Can’t Hear Remote Participants
309
Remote Participants Can’t Hear Local Participants
310
Feedback Elimination Doesn’t Seem To Be Operational - Feedback Can Be Heard Locally
310
How Do I Enable Auto Gain Control Or Noise Cancellation On The Program Audio Material And Video Codec Audio?
311
How To Set The Audio Amplifier Default Level?
311
How Do I Get More Than One Signal Generator?
311
Echo Troubleshooting
312
The Remote People Hear Echo Of Their Voices From The Local Room
312
The Local People Hear Echo Of Their Voices From The Remote Room
316
Room Gain Is High - What Does It Mean?
316
API Troubleshooting
317
When using TeraTerm 3.1 and connecting over Telnet, why do I have to select CR-LF termination for commands sent to SoundStructure and not just CR termination?
317
What Does The Error “invalid action specified” Message Mean?
317
What Does The Error “device ID not specified” Message Mean?
317
What Does The Error “virtual channel or virtual channel group label not quoted” Message Mean?
317
What Does The Error “no virtual channel or virtual channel group with that label exists” Message Mean?
318
What Does The Error “invalid parameter name” Message Mean?
318
What Does The Error “parameter argument not specified” Mean?
318
What Does The Error “invalid parameter argument” Message Mean?
318
Why Won’t The Control System Mute The Microphones?
318
I Muted All The Members Of My Virtual Channel Group, Why Don’t I Get A Group Acknowledgement That The Virtual Channel Group Is Muted?
319
Where Do I Get More Info About The API?
319
Do Commands Need To Be In Upper Or Lower Case?
319
I’ve Tried Everything And I Still Can’t Connect To The SoundStructure Device
319
RS-232 Troubleshooting
320
I Can’t Connect Over RS-232 To The System, How Do I Connect?
320
How Do I Set The Baud Rate? What If I Can’t Connect Over RS-232?
320
What Is Flow Control And How Does It Work?
321
HDX Integration
321
How Do I Know The Polycom HDX System Is Connected Properly To The SoundStructure?
321
How Do I Connect Multiple HDX’s To The SoundStructure?
322
If I Change Volume On SoundStructure, Why Don’t I See The HDX Volume Bar Update?
322
If I Mute On The SoundStructure, Why Doesn’t The Mute Icon Appear On The HDX?
322
Telco Troubleshooting
322
Phone Won’t Go Off Hook Or I Don’t Hear Dial Tone
322
Phone Won’t Auto Hang Up
323
I Dial But I Don’t Hear The Digits
323
Ethernet
323
How Do I Determine The IP Address Of My SoundStructure Device?
323
SoundStructure Studio Can’t Find My SoundStructure Device Over Ethernet
324
Hardware Troubleshooting
324
OBAM Troubleshooting
325
Troubleshooting The IR Interface
326
Contacting Technical Support
326
11
329
Specifications
329
Technical Specifications
329
Dimensions
329
Weight
329
Connectors
329
Power
329
Thermal
330
Inputs
330
Outputs
330
System
330
Telco
331
Pin Out Summary
332
PSTN Cable
332
Conference Link2
333
OBAM Link
334
Connector Pinout
334
IR Receiver
335
RS-232
335
Logic Interface
336
Audio Connections
337
12
339
Using SoundStructure Studio Controls
339
Adjusting Knobs
339
Adjusting Matrix Crosspoints
340
A
343
Command Protocol Reference Guide
343
Introduction
343
SoundStructure Control Interfaces
343
RS-232
344
Ethernet
345
Virtual Channels
346
Virtual Channel Types
348
Mono Virtual Channels
348
Stereo Virtual Channels
348
Virtual Channel Groups
348
SoundStructure Command Syntax
349
Controlling SoundStructure Parameters
350
System Parameters
350
Virtual Channel Parameters
350
Matrix Parameters
350
Command Format
352
Actions
352
Data
352
Command Termination
352
Command Acknowledgements
352
Command Length
353
Control Commands
353
Argument Separation
353
Integer Arguments
353
Floating-Point Arguments
354
System-Defined Text Arguments
354
User-Defined Text Arguments
354
Acknowledgements
354
Virtual Channel Definition Commands
355
vcdef Action
355
vcdef Acknowledgements
358
vclist Action
358
vclist Acknowledgements
358
vcundef Action
359
vcundef Acknowledgements
359
vcrename Action
359
vcrename Acknowledgements
360
Virtual Channel Group Definition Commands
360
vcgdef Action
360
vcgdef Acknowledgement
361
vcgundef Action
361
vcgundef Acknowledgement
361
vcgrename Action
362
vcgrename Acknowledgements
362
vcgadd Action
362
vcgadd Acknowledgements
363
vcgremove Action
363
vcgremove Acknowledgements
363
vcglist Action
363
vcglist Acknowledgements
364
Adjusting Parameters
364
Parameter Command Syntax
365
Parameter Modes
366
Parameter Types
367
Command List
370
Command Example
370
fader Digital Fader
370
Description
371
Interpretation of the Arguments
371
Fader Examples
371
SoundStructure Parameters
372
Gain and Mute Parameters
372
Description
372
fader Digital Fader
372
Description
373
line_out_gain Line Output Gain
373
Description
374
mic_in_gain Mic Input Pre-Amp Gain
374
Description
374
mute Digital Mute
375
Description
375
phantom 48 V Phantom Power
376
Description
376
safety_mute Safety Mute
376
Description
376
trim Gain Trim For Virtual Channels
377
Description
377
Matrix Parameters
378
matrix_balance Matrix Crosspoint Balance
378
Description
378
matrix_gain Matrix Crosspoint Gain
379
Description
379
matrix_gate Enable Gated Signal At Crosspoint
379
Description
380
matrix_gate_type Select Gating Type
380
Description
381
matrix_invert Matrix Crosspoint Inversion
381
Description
381
matrix_mute Matrix Crosspoint Mute
382
Description
382
matrix_pan Matrix Crosspoint Pan
382
Description
383
Telephony Parameters
383
Telephony Parameter Summary
383
phone_auto_answer_en Enable Auto-Answer For Telephony Interface
385
Description
385
phone_connect Connect Or Disconnect Telephony Interface
385
Description
385
phone_dial Dial The Telephony Interface
386
Description
386
phone_dial_tone_gain Dial Tone Gain
387
Description
387
phone_dtmf_gain Telephony Input DTMF Gain
387
Description
388
phone_entry_tone_en Enable Entry Tones for Telephony Interface
388
Description
388
phone_exit_tone_en Enable Exit Tones For Telephony Interface
388
Description
389
phone_flash Connect Or Disconnect Telephony Interface
389
Description
389
phone_flash_delay Set Flash Delay
389
Description
390
phone_redial Redial The Last Number On The Telephony Interface
390
Description
390
phone_ring Ring Indicator For Telephony Interface
390
Description
391
phone_ring_tone_en Enable Ring Tones For Telephony Interface
391
Description
391
phone_tone_gain Telephony Input Tone Gain
391
Description
392
pstn_auto_hangup_loop_en Enable Auto-Hangup On Loop Drop For PSTN Interface
392
Description
392
pstn_country Country For PSTN Interface
392
Description
395
pstn_flash_delay_override Override Country Code Flash Delay
395
Description
395
pstn_in_gain PSTN Input Gain
395
Description
395
pstn_line_voltage PSTN Line Voltage
396
Description
396
pstn_loop_current PSTN Loop Current
396
Description
397
pstn_out_gain PSTN Output Gain
397
Description
397
Equalizer Parameters
397
Description
397
eq_en Enable All Equalizer Processing
398
Description
398
eq_type Select Graphic or Parametric Equalizer
398
Description
398
geq_compensate Enable Gain Compensation For Graphic Equalizer
399
Description
399
geq_en Enable Graphic Equalizer
399
Description
399
geq_gain Gain of Graphic Equalizer Band
399
Description
400
geq_type Graphic Equalizer Type
400
Description
400
high_shelf_en Enable High Shelving Filter
400
Description
401
high_shelf_frequency Frequency Of High Shelving Filter
401
Description
401
high_shelf_gain Gain Of High Shelving Filter
402
Description
402
high_shelf_slope Slope Of High Shelving Filter
402
Description
402
horn_en Enable Horn Equalizer
403
Description
403
horn_frequency Frequency of Horn Equalizer
403
Description
403
hpf_en Enable High-Pass Filter
404
Description
404
hpf_frequency Frequency Of High-Pass Filter
404
Description
404
hpf_order Order of High-Pass Filter
405
Description
405
hpf_type Type Of High-Pass Filter
405
Description
405
low_shelf_en Enable Low Shelving Filter
406
Description
406
low_shelf_frequency Frequency Of Low Shelving Filter
406
Description
406
low_shelf_gain Gain Of Low Shelving Filter
407
Description
407
low_shelf_slope Slope Of Low Shelving Filter
407
Description
407
lpf_en Enable Low-Pass Filter
408
Description
408
lpf_frequency Frequency Of Low-Pass Filter
408
Description
408
lpf_order Order Of Low-Pass Filter
409
Description
409
lpf_type Type Of Low-Pass Filter
409
Description
409
peq_band_en Enable Parametric Equalizer Band
410
Description
410
peq_bandwidth Bandwidth Of Parametric Equalizer Band
410
Description
411
peq_frequency Frequency Of Parametric Equalizer Band
411
Description
411
peq_gain Gain Of parametric Equalizer Band
411
Description
412
peq_type Type Of parametric Equalizer Band
412
Description
412
Dynamics Processing Parameters
413
Description
413
dp_en Enable Dynamics Processing
413
Description
413
dp_gate_attack Gate Attack Time
413
Description
414
dp_gate_decay Gate Decay Time
414
Description
414
dp_gate_en Enable Gate
415
Description
415
dp_gate_hold Gate Hold Time
415
Description
415
dp_gate_ratio Gate Ratio
416
Description
416
dp_gate_thresh Gate Threshold
416
Description
417
dp_exp_attack Expander Attack Time
417
Description
417
dp_exp_decay Expander Decay Time
417
Description
418
dp_exp_en Enable Expander
418
Description
418
dp_exp_ratio Expander Ratio
418
Description
419
dp_exp_thresh Expander Threshold
419
Description
419
dp_comp_attack Compressor Attack time
420
Description
420
dp_comp_decay Compressor Decay Time
420
Description
421
dp_comp_en Enable Compressor
421
Description
421
dp_comp_ratio Compressor Ratio
421
Description
422
dp_comp_thresh Compressor Threshold
422
Description
422
dp_lim_attack Limiter Attack Time
422
Description
423
dp_lim_decay Limiter Decay Time
423
Description
423
dp_lim_en Enable Limiter
424
Description
424
dp_lim_ratio Limiter Ratio
424
Description
425
dp_lim_thresh Limiter Threshold
425
Description
425
dp_peak_en Enable Peak Limiter
425
Description
426
dp_peak_thresh Peak Limiter threshold
426
Description
426
Algorithm Parameters
426
aec_en Enable Acoustic Echo Canceller
426
Description
427
aec_noise_fill Enable Noise Fill
427
Description
427
aec_ref AEC Reference
427
Description
427
agc_en Enable Automatic Gain Control
428
Description
428
agc_max_gain AGC Maximum Gain
428
Description
429
agc_min_gain AGC Minimum Gain
429
Description
429
delay Amount Of Delay
429
Description
430
delay_en Enable Signal Delay
430
Description
430
fb_en Enable Feedback Reduction
430
Description
430
fb_filter_bandwidth Feedback Reduction filter Bandwidth
431
Description
431
fb_filter_decay_en Enable Filter Decay Mode In Feedback Reduction Algorithm
431
Description
431
fb_filter_reset Reset One Of The Feedback Reduction Filters
432
Description
432
fb_filter_max_depth Maximum Filter Depth For Feedback Reduction Filters
432
Description
432
fb_safe_mode_atten Safe Mode Attenuation For Feedback Reduction
433
Description
433
mic_source_index Select Mic audio Source Index
433
Description
434
mic_source_type Select Mic audio Source type
434
Description
435
nc_en Enable Noise Canceller
435
Description
435
nc_level Noise Cancellation Level
436
Description
436
sig_gen_gain Signal Generator Gain
436
Description
436
sig_gen_sweep_start Signal Generator Sweep Start Frequency
437
Description
437
sig_gen_sweep_step Signal Generator Sweep Step Size
437
Description
437
sig_gen_sweep_stop Signal Generator Sweep Stop Frequency
438
Description
438
sig_gen_sweep_time Signal Generator Sweep Time
438
Description
438
sig_gen_tone_freq Signal Generator Tone Frequency
439
Description
439
sig_gen_type Signal Generator Type
439
Description
439
Input Path Parameters
440
cr_ungated_type Select Processing For Ungated Signal
440
Description
440
sr_delay_type Select Delay for Sound Reinforcement Signal
440
Description
440
sr_ungated_type Select Processing For Ungated Signal
441
Description
441
ungated_delay_comp_en Enable Delay Compensation For Triune Signals
441
Description
441
Automixer Parameters
442
am_adapt_thresh Automixer Adaptive Threshold
442
Description
442
am_camera_activity_time Automixer Camera Activity Time
442
Description
442
am_chairman Automixer Chairman Microphone
443
Description
443
am_chan_bias Automixer Channel Bias
443
Description
443
am_decay_time Automixer Decay Time
444
Description
444
am_en Enable Automixer
444
Description
444
am_gain_sharing Enable Gain-Sharing Automixer Mode
445
Description
445
am_group Automixer Group
445
Description
445
am_hold_time Automixer Hold Time
446
Description
446
am_last_mic_mode Automixer Last Mic Mode
446
Description
446
am_nom_limit NOM Limit
447
Description
447
am_off_atten Automixer Off Attenuation
447
Description
447
am_priority Automixer Microphone Priority
448
Description
448
am_priority_atten Automixer Priority Attenuation
448
Description
448
am_slope Gain Sharing Automixer Slope
449
Description
449
GPIO Control Parameters
449
analog_gpio_value Analog GPIO Value
449
Description
450
analog_gpio_max Maximum For Analog GPIO Mapping
450
Description
450
analog_gpio_min Minimum For Analog GPIO Mapping
450
Description
451
digital_gpio_state Digital GPIO Pin Status
451
Description
451
digital_gpio_value Digital GPIO Array Value
451
Description
452
Control Port Parameters
452
eth_settings Ethernet Settings
452
Description
452
eth_ip_mode Select Method For Obtaining IP Address
453
Description
454
eth_mac Get Ethernet MAC Address
454
Description
454
ir_key_press Key Pressed On IR Remote
454
Description
454
ir_key_held Key Held On IR Remote
455
Description
455
ser_baud RS-232 Baud Rate
455
Description
455
ser_flow RS-232 Flow Control
456
Description
456
System Parameters
456
dev_bootloader_ver Bootloader Version
456
Description
456
dev_firmware_ver Firmware Version
457
Description
457
dev_ntp_server NTP Server
457
Description
457
dev_status System Status
457
Description
458
dev_temp Internal Temperature
458
Description
458
dev_type Device Type
459
Description
459
dev_uptime System Uptime
459
Description
459
dev_volt_clink ConferenceLink Supply Voltage
459
Description
460
dev_volt_neg_15 -15 V Supply Voltage
460
Description
460
dev_volt_phantom Phantom Power Supply Voltage
460
Description
460
dev_volt_pos_15 +15 V Supply Voltage
460
Description
461
sys_factory_reset Restore System To Factory Settings
461
Description
461
sys_name System Name
461
Description
461
sys_reboot Reset The Device
462
Description
462
B
463
Designing Audio Conferencing Systems
463
Large Room Environments
464
Microphone Selection And Placement
465
Microphone Fundamentals
465
Phantom Power
465
Directional vs Omnidirectional Microphones
465
Noise Immunity
466
Boundary Microphones
467
Critical Distance
467
Microphones For Conferencing
468
Gooseneck Microphones
468
Tabletop Microphones
469
Wireless Microphones
470
Ceiling Microphones - Quality vs Convenience
470
Automatic Microphone Mixers
471
Noise Cancellation
472
Acoustic Echo Cancellation
473
AEC Reference
475
Tail Time
475
Transmission Delay
476
Echo Return Loss
477
Multi Channel vs. Single Channel AEC
478
Muting Microphones
479
Volume Control
480
AEC Troubleshooting Guidelines
480
Telephone Hybrid
481
Amplifiers
483
Loudspeakers
483
Speaker Zoning And Placement
485
Loudspeakers - How Much Power Is Required
487
Spatial Directionality
487
Microphone And Loudspeaker Placement Considerations
488
In-Room Reinforcement
488

Tamaño:

10 MB
Páginas:

492
Language:

English

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Polycom SR12 Manuales de usuario

Manual De Usuario

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Manual De Usuario

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