Automated Voice And Audio Quality Test Measurement
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AQuA is a simple but powerful tool to provide perceptual voice quality testing and audio files comparison. This is the easiest way to compare two sound signals and test voice quality between original and degraded files.
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The algorithms used in different codecs make use of various characteristics of the characteristics of human speech recognition. Redundant information is removed from the signals thus slightly reducing the quality, but greatly reducing the required bandwidth.
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MORE INFORMATION: http://www.idc-online.com/content/practical-fundamentals-voice-over-ip-voip-21?id=151
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Practical Fundamentals of Voice over IP (VoIP) for Engineers and Technicians
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Automated Voice And Audio Quality Test Measurement
- 1. Making your voice quality testing easy Sevana Oy Endre Domiczi Mobile: +358 9 23164165 E-mail: ceo@sevana.fi
- 3. Company Presentation Sevana Oy (Ltd) is a privately owned Helsinki based Finnish company established in 2003 as a software development company with the emphasis to emerging software technologies in telecom and industrial solutions. Sevana Oy Agrikolankatu 11 00530 Helsinki email: info@sevana.fi Finland tel. : +358 9 23164165
- 4. Company management and shareholders Sevana Oy (Ltd.) is currently owned by its founders and employees. The company has three different international software research and development teams organized by product lines. Sevana Oy (Ltd.) is lead by Mr. Endre Domiczi company CEO who is one of the main shareholders and co-founders. He is currently responsible for company operations and managing activities in Finland and European markets.
- 18. Business Solutions(4): VQT in Mobile Networks Mobile device with a stored voice/audio of original quality initiating a call to “answering machine” Mobile network of any standard providing carrier to the “answering machine” and being reason for audio degradation “ Answering machine” when receiving a call plays back the same original audio to the mobile device Test network quality for voice transmission from a Windows Mobile enabled device in seconds! Mobile Network Originating a phone call Answering to phone call Playing recorded audio Receiving degraded sound
- 19. Business Solutions(5): VQ Monitoring Computer generating and storing “speech model” – a set of sounds typical for human speech – delivering to the reception side through carrier channel/trunk Network carrier: PSTN/GSM/3G/CDMA/IP Computer receiving degraded “speech model” and calculating voice quality value in % plus reasons for voice quality loss Test channels/trunks for voice quality continuously. No other equipment required than what you already have! Carrier Network Speech Model Signal Degraded Speech Model Signal
- 20. Business Solutions(6): VoIP: QoE Feedback Avoid asking VoIP users for voice quality feedback, automate receiving perceptual quality of experience values – make your system more customer friendly! On one end of VoIP conversation outgoing (original) and incoming (degraded) are recorded On the other end of VoIP conversation outgoing (original) and incoming (degraded) are recorded as well VoIP Network VQ Server tests original1 to degraded2 and degraded1 to original1 providing 2 values for voice quality of the conversation
- 21. Business Solutions(7): VoIP: QoS Monitor your VoIP provider by doing sudden tests and be aware that your provider maintains appropriate network and voice quality (especially if you signed SLA) Initiating a call would requite just the same client device/application and 1 license of Sevana Voice Quality Software Test voice quality in your VoIP environment and get back to your VoIP provider with questions on SLA and reasons for voice quality loss – you will be prepared with estimations and actual reasons what degrades voice quality in your network. VoIP network conditions as well as voice quality conditions may vary, but when you are paying for your VoIP provider you should have means to check the actual situation of voice quality in your VoIP VoIP Network Test HD Voice easily!
- 25. THANK YOU!