Post on 31-Mar-2015
transcript
Designing Audio for AV Applications
Professional Audio Consultants
UK Distribution & Wholesale
Audio Solutions • Background music
• Presentation Speech
• Speech Reinforcement
• Teleconferencing
• Surround Sound
Background Music:
Audio sourceAmplifier
mixer
Ceiling speakersor
Wall mount speakers
orIn wall speakers
Room dimensions
Speaker size and type
Look, size and power for application
Room properties
Choosing appropriate equipment
Speakers
Genelec 1036A
Active studio monitors
Choosing appropriate equipment for the application:
Amplifiers
Integrated amplifier
Professional power amplifier
Professional DSP and Network linked amplifier
AV amplifier
Hi-Fi Integrated Amplifier:
Low cost
Rack mountable units available
Multi source inputs with IR remote
Remote volume control
2 x speaker outputs
Professional power amplifier
Balanced connections
Bridged mono option
Lo Z or 100V
Combined mixer/amplifier
100 volt or low impedance
Pro amplifier networkable with DSP
DSP software for amp monitoring and control
Advantages of Balanced Audio
• Noise cancellation
• +4dB operating level
• Impedance balancing
• High signal-to-noise ratio
• Cable runs up to 100m
• 5 metre limit
• -10dB operating level
100v line amplifiers & speakers
Daisy chain by parallel wiring
Individual speaker tapping
Number of speakers limited only by amplifier headroom and the tappings
Transformer version ceiling speaker
Low impedance amplifiers
Amp = 4 ohm
2 x 4 ohm speakers
Or
4 x 8 ohm speakers
Or
8 x 16 ohm speakers
Better quality, stereo option or bridge mono
Presentation Speech
Microphone choice
Speaker Choice
Signal Processing
Microphone & Speaker positioning
3.5 watts 7.5 watts 15 watts
Speech Presentation
Feedback Loops
Mic Choice
Pickup patterns
Graphic Equalisers
Feedback Eliminators
Speech Reinforcement
Boundary table top mics
Mic & Speaker placement
Automatic Microphone Mixers
Noise Gates
Compressors/Limiters
Microphone Choice
Wireless microphone &
Speaker for speech reinforcement
Multiple Zones
BSS Soundweb DSP unit
Denon DNA 7100
Genelec active surround 5.1 system