VIAVI OPERA Voice Quality Analyser

PESQ, PSQM, PEAQ

The OPERA Voice/Audio Quality Analyser represents the latest developments to objectively evaluate and assure the quality of compressed voice and wide-band audio signals, based on modeling the human ear. With OPERA you can achieve a comprehensive analysis of the end-to-end quality of today's and next generation networks, such as VoIP, VoDSL, VoATM, ISDN, GSM, POTS, from the caller to the callee. Also, you can test the audio quality of compression formats such as MP3, AAC, AC3, Microsoft Windows Media, from the studio source to the receiver, or from the server to the client.

Highlights

• How to apply a computer model of the human ear to a test circuit or to a live network environment.
• Open, easy-to-configure hardware platform to process perceptual models implemented by software.
• Portable 'lunch box' type of PC host system.
• Four slots to take various kinds of interfaces.
• Also available as rack-mountable device or cost-effective software-only version (with reduced functionality).

Applications

• Tests signal interfaces.
• Checks correct DUT response.
• Verifies virtual concatenation with Ethernet mapping.
• Checks for correct LCAS emulation.
• Tests interworking of SONET/SDH and Ethernet ports.

Key Features

• Four port analog POTS interface (standard).
• Dual port E1/T1 trunk interface option; software configurable, 120 ohm RJ48C.
• 2x 24 bit analog/digital audio I/O interface option for multimedia testing (e.g. PC-to-phone)
• OPERA multimedia adapter set (e.g. for PC-to-phone, multimedia terminal testing); including stereo XLR(m)-to-jack (3.5 mm), stereo XLR(f)-to-jack (3.5 mm); including 2x XLR(m)-to-Cinch, 2x XLR(f)-to-Cinch.
• OPERA fixed and mobile phone adapter box OPR-820-FMA-X [Note: 2x 24 bit analog/digital audio I/O required].
• Interfaces for audio applications: 2x stereo 24 bit analog/digital I/O interface (standard), sym. XLR, AES/EBU; OPERA multimedia adapter set (e.g. for PC-to-phone, multimedia testing); including stereo XLR(m)-to-jack (3.5 mm), stereo XLR(f)-to-jack (3.5 mm); including 2x CLR(m)-to-Cinch, 2x XLR(f)-to-Cinch.