Finding the WHO, WHAT & WHEN  in audio


Oxford Wave Research (OWR) is a leading R&D company based in Oxford, UK, specialising in audio and speech processing, voice biometrics and deep learning-related product development. Our team has many years of experience developing solutions for law enforcement, military as well as other agencies both in the UK and around the world.

Our Spectrumview app features in BBC 4 documentary - Ocean Autopsy: The Secret Story of Our Seas

We were delighted to see our Spectrumview audio analysis app being used by Dr Helen Czerski , a renowned oceanographer and physicist from University College London, to explore a whole new acoustic world under the waves as part of the BBC 4 documentary - 'Ocean Autopsy: The Secret Story of Our Seas'. Dr Czerski drops a hydrophone into the depths of the ocean and listens to, and visualises the sounds deep under the water using Spectrumview. In this excellent programme they explore how the sounds deep under the water (including man-made sounds) can affect marine life such as porpoises.

So the ocean surface is effectively a barrier for almost all sound, so we have no idea what’s going on down there, and it’s a different acoustic world. But you can listen in with the help of a little bit of technology.

Dr Helen Czerski, Oceanographer
SpectrumView - Frequency Analysis Software

Oxford Wave Research Appointed as Salient Sciences’ Exclusive Distributor in UK and Ireland

Kicking off the distributor appointment (left to right - Anil Alexander, CEO Oxford Wave Research, Jeff Hunter CTO, Video Products & Don Tunstall, General Manager Salient Sciences)

Oxford Wave Research Ltd. are pleased to announce our appointment as the exclusive distributor in the United Kingdom and the Republic of Ireland for Salient Sciences (legal name Digital Audio Corporation, known to many as “DAC”).

We are excited to have our colleagues at Oxford Wave Research now officially offering Salient Sciences’ products and services in the UK and Ireland. We have previously worked closely with them on several interesting projects; going forward, we anticipate an even closer collaboration to provide unique, innovative solutions to our shared base of audio and video forensics clients worldwide.

Donald Tunstall, General Manager, Salient Sciences:

We also have many years of experience working with the DAC hardware-based audio processing solutions, such as the MicroDAC, PCAP, and CARDINAL AudioLab systems.

OWR will now be taking over all sales and support in the UK and Ireland, with immediate effect, for the VideoFOCUS and CARDINAL MiniLab Suite products, including all maintenance contracts and support.

Watch this space for training course announcements from DAC in the UK in 2020.

Dr Ekrem Malkoç joins Oxford Wave Research

Dr Ekrem Malkoç is joining Oxford Wave Research as our Technical Sales Manager. He will be spearheading expansion of Oxford Wave Research’s forensic and commercial speech and audio processing products into new regions and markets.

Ekrem is a well-known expert in the field of forensic speech and audio processing, forensic image analysis as well as forensic linguistics. He has a PhD in forensic linguistics from Ankara University (Turkey), MSc and MA degrees in Criminalistics and European Criminology from the Ankara University and Katholieke University of Leuven (Belgium) respectively, and a bachelor’s degree in Electrical and Electronics Engineering. Ekrem worked in Turkish Gendarmerie till 2015 as a Colonel after having served as the manager of two regional Gendarmerie Forensic Laboratories.

You can read more about him here https://oxfordwaveresearch.com/about-us/

Oxford Wave Research in Turkey for IAFPA 2019

Last week (14-17 July 2019) some of the OWR team had the pleasure of attending the annual IAFPA (International Association for Forensic Phonetics and Acoustics) conference which was hosted this year in Istanbul, Turkey. 

It was a great opportunity for us to learn about the work of other members of the forensic phonetics and acoustics community from all around the world. One of the hot topics  IAFPA this year was cross-language speaker comparison (Croatian-Serbian, Czech-Persian and French-English to name a few) We were delighted to see how much of this and other research from Switzerland and the Netherlands made use of the capabilities of our forensic automatic speaker recognition software VOCALISE. 

The OWR team with the conference organiser
Burcu Önder Gürpinar 

We enjoyed every part of the conference but the highlight for us was undoubtedly our intern Linda’s poster winning the 2019 Best Student Poster award. As you can imagine, the team celebrated appropriately with Turkish beer. 

Linda presenting speaker profiling and speaker recognition using x-vectors (winner of best student poster award).

We also showcased our advances in the use of Deep Neural Network (DNN)s using x-vectors in automatic speaker comparison and speaker profiling, presented by Dr. Finnian Kelly, our Principal Research Scientist.

Finnian presenting our x-vector paper

Abstracts of our papers:
 
1. From i-vectors to x-vectors – a generational change in speaker recognition illustrated on the NFI-FRIDA database, Finnian Kelly, Anil Alexander, Oscar Forth and David van der Vloed, 14-17 July 2019, International Association of Forensic Phonetics and Acoustics (IAFPA) Conference, Istanbul, Turkey [download here]

2. The effect of background selection on the strength of evidence
David van der Vloed, Finnian Kelly and Anil Alexander, 14-17 July 2019, International Association of Forensic Phonetics and Acoustics (IAFPA) Conference, Istanbul, Turkey [download here]

3. One out of many: A sliding window approach to automatic speaker recognition with multi-speaker files Linda Gerlach, Finnian Kelly and Anil Alexander, 14-17 July 2019, International Association of Forensic Phonetics and Acoustics (IAFPA) Conference, Istanbul, Turkey [download here]

4. More than just identity: speaker recognition and speaker profiling using the GBR-ENG database, Linda Gerlach, Finnian Kelly and Anil Alexander 14-17 July 2019, International Association of Forensic Phonetics and Acoustics (IAFPA) Conference, Istanbul, Turkey (Winner of 2019 Best Student Paper award) [download here]

Special thanks to Burcu Önder Gürpinar for 4 fantastic days of forensics and we look forward to showing you what we have in store for IAFPA 2020.

Lend us your ears - Voice Similarity Research

Linda Gerlach, who is interning with us from the Philipps-Universität Marburg in Germany, is working on a collaborative project between Oxford Wave Research (OWR) and the University of Cambridge. This work forms part of her MA thesis and seeks to better understand the relation of voice similarity ratings by humans and by an automatic approach. Results from this work could potentially help develop forensically sound methods and solutions for voice lineups (where a witness has to pick out the voice of a perpetrator from a lineup of foils).

Link to the voice similarity survey

This test takes about 15 mins and you will be presented with pairs of voice recordings by male speakers and asked to judge the similarity of each pair.

Thank you!