User manual OPTICOM OPERA ANALYZER TECHNICAL SPECIFICATION

[. . . ] All brand and product names are trademarks and/or registered trademarks of their respective owners. Copyright © 2001 by OPTICOM GmbH · www. opticom. de TECHNICAL ANALYZER SPECIFICATION FOR THE OPERATM OBJECTIVE PERCEPTUAL Feature Overview Voice Quality Measurement · · · · · · · · · · · · · · · · · · PESQ, perceptual evaluation of speech quality according to ITU-T rec. Combines PSQM with PAMS, optimized for VoIP and hybrid end-to-end applications PSQM, perceptual speech quality measure according to ITU-T rec. [. . . ] ~12. 4 hours at 48 kHz, 16 bit resolution) Gain Compensation: Automatic Delay Compensation: Static Delay: Automated operation: Available Measurement Results: Maximum gain difference = ±60 dB ±1000 ms Automatic Delay Compensation ±10 s Supported Timesignal, Spectrum, Excitation, Percentage of silent intervals during measurement (Silence), 1 Available Q4/2001 3 TECHNICAL ANALYZER SPECIFICATION FOR THE OPERATM OBJECTIVE PERCEPTUAL Percentage of time clipped frames during measurement (Time Clipped), Percentage of severely distorted frames during measurement (Sev. Distorted), PSQM according to P. 861, silence weight = 0. 0 (PSQMW0), PSQM according to P. 861, silence weight = 0. 2 (PSQMW2), PSQM according to P. 861, silence weight = 0. 4 (PSQMW4), PSQM value of the silent intervals (PSQM-Silence), Mean Opinion Score (MOS), silence weight = 0. 0 (OMOSW0), Mean Opinion Score (MOS), silence weight = 0. 2 (OMOSW2), Mean Opinion Score (MOS), silence weight = 0. 4 (OMOSW4), Mean Opinion Score (MOS) vs. Time, Delay between the Reference Signal and the output signal of the device under test, Attenuation of the test signal compared to the reference signal Additional Features: File-based measurements, On-line measurements, Trigger functionality, Printing and graph exporting functionality, Includes official ITU voice samples for testing, Includes PESQ conformance test samples, Includes PSQM conformance test samples Perceptual measurement of speech quality according to ITU-T rec. Includes highly optimized proprietary mapping from raw PSQM values to P. 800 Mean Opinion Score (MOS) scale. Results can be directly compared to subjective listening tests. PSQM+ is optimzed for severe distortions, such as packet loss and time clipping. P. 861 8 kHz and 16 kHz WAVE-files containing A-law, mu-law, linear PCM (8 or 16 bit) File-based: As defined by WAVE-format PSQM+ Measurement Description: Algorithm standard: Sample rates: Sound file formats: Max. duration of measurement signals: On-line: 2 32 ( fs ( bitspersample 8) (e. g. ~12. 4 hours at 48 kHz, 16 bit resolution) Gain Compensation: Maximum gain difference = ±60 dB 4 TECHNICAL ANALYZER SPECIFICATION FOR THE OPERATM OBJECTIVE PERCEPTUAL Automatic Delay Compensation: Static Delay: Automated operation: Available Measurement Results: ±1000 ms Automatic Delay Compensation ±10 s Supported Timesignal, Spectrum, Excitation, Percentage of silent intervals during measurement (Silence), Percentage of time clipped frames during measurement (Time Clipped), Percentage of severely distorted frames during measurement (Sev. Distorted), PSQM according to P. 861, silence weight = 0. 0 (PSQMW0), PSQM according to P. 861, silence weight = 0. 2 (PSQMW2), PSQM according to P. 861, silence weight = 0. 4 (PSQMW4), PSQM value of the silent intervals (PSQM-Silence), Mean Opinion Score (MOS), silence weight = 0. 0 (OMOSW0), Mean Opinion Score (MOS), silence weight = 0. 2 (OMOSW2), Mean Opinion Score (MOS), silence weight = 0. 4 (OMOSW4), Mean Opinion Score (MOS) according to PSQM+ (OMOS+), Mean Opinion Score (MOS) vs. Time, Delay between the Reference Signal and the output signal of the device under test, Attenuation of the test signal compared to the reference signal File-based measurements, On-line measurements, Trigger functionality, Printing and graph exporting functionality, Includes official ITU voice samples for testing, Includes PESQ conformance test samples, Includes PSQM conformance test samples Same as PSQM and PSQM+. Includes advanced time alignment algorithm to cope with static and variable latencies, developed by OPTICOM (Delay Tracking functionality). P. 861 8 kHz and 16 kHz Additional Features: PSQM/IP Measurement Description: Algorithm standard: Sample rates: 5 TECHNICAL ANALYZER SPECIFICATION FOR THE OPERATM OBJECTIVE PERCEPTUAL Sound file formats: WAVE-files containing A-law, mu-law, linear PCM (8 or 16 bit) File-based: As defined by WAVE-format Max. duration of measurement signals: On-line: 2 32 ( fs ( bitspersample 8) (e. g. [. . . ] 0. 3A)/<0. 1A/<0. 1A Operating: temp / humidity (noncondensing): 0°C/+50°C 5%/80%, non-condensing Storage : temp / humidity (noncondensing): -20°C/+70°C 5%/80%, non-condensing Loop Parameters: Impedance: Audio Signal Processing: Country specific, linear (600W or 900W) or complex (Europe: according to ETSI TBR 21) -50 to +0 dBm (optional configurable AGC above nominal -44 dBm). 8 ksamples/sec (telephone industry standard). 64 kbps m-law or A-law per ITU-T G. 711, 16, 24, 32, 40 kbps ADPCM using ITU-T G. 726 algorithm, 16, 24, 32 kbps NMS compatible ADPCM, 32 kbps VOX compatible ADPCM, 8, 16 bit PCM 11, 22, 44 kHz, 16 bit mono PCM 8 kHz 300-3400 Hz 100 W 3 dB 3. 5 mm stereo jack 300-3400 Hz 47 kW 2 Vcc peak-to-peak 3. 5 mm stereo jack 0-9, *, #, and ABCD per ITU-T Q. 23 and Q. 24 Programmable (10 digits/sec nominal) Software controllable Network compatible programmable range -33 dBm to 1dBm Wait-for-dial-tone capability Receive Range: Transmit: Silence Detection: Sampling Rates: Speech: Audio Output: Frequency: Impedance: Level: Output Connector: Audio Input: Frequency: Impedance: Level: Output Connector: Tone Dialling: DTMF Digits: Rate: Dialling Parameters: Dialling Amplitude: Dial Tone Wait: Audio Interface Analog: Interface Type: Two inputs and two outputs, cross-coupled electronically balanced, XLR connectors on audio cables 10 TECHNICAL ANALYZER SPECIFICATION FOR THE OPERATM OBJECTIVE PERCEPTUAL Level: Input impedance: Output impedance: Output drive capability: A/D and D/A converters: Bit depth: Frequenzy response: Dynamic range: Signal to Noise Ratio: Channel crosstalk: Input THD+N: Output THD+N: Digital: +4dBu nominal / +20dBu max or ­10dBV nominal / +6dBV max, 600W load on outputs Balanced: 24kW, unbalanced 12kW Balanced: 100W, unbalanced 50W 600W impedance, 0. 16mF capacitance 24bit, 128x oversampling, sigma delta 8, 16, 24 or 32 bit file types 20Hz. . 20kHz, +0/-0. 35dB >103dB, A wtd. , analog in to analog out >99dB, A wtd. , analog in to analog out <-103dB, analog in to analog out, 1kHz signal @ 1dBFS 0. 0022%typ. , 1kHz signal @ -1dBFS, 22Hz. . 22kHz BW, analog in to digital out 0. 0015%typ. , 1kHz signal @ -1dBFS, 22Hz. . 22kHz BW, digital in to analog out One input and one output / AES/EBU or S/P DIF format, transformer coupled, XLR connectors on audio cables 32kHz, 44. 1kHz, 48kHz, 88. 2kHz, 96kHz 8, 16, 24 or 32 bit file types External BNC input and output, internal clock or board to board synchronisation through internal header cable TTl / 75W 25kHz to 27MHz Interface Type: Sample rates: Bit depth: Clock / Synchronisation: Type: External: Level / impedance: External: Input frequency range: E1/T1 Trunk Interface Capacity: Voice Compression: Silence Suppression: Echo Cancellation: Gain Control: VoIP IA Compliance: Up to 60 independent digital voice ports (Dual-port version), Up to 120 independent digital voice ports (Quadport version). 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