7 papers
Robocalls: A Worldwide or US-only Problem? Analyzing Spam and Fraud in International Phone Calls
Kemal Altwlkany, Andro MerÄep, Tomislav ÄuriÄiÄ +2
Unsolicited automated phone calls (robocalls) are a serious threat: in the US alone, these calls resulted in reported losses of 1.1$ billion during 2025. Phishing and spoofing cons…
On the Language and Gender Biases in PSTN, VoIP and Neural Audio Codecs
Kemal Altwlkany, Amar Kuric, Emanuel Lacic
In recent years, there has been a growing focus on fairness and inclusivity within speech technology, particularly in areas such as automatic speech recognition and speech sentimen…
Application of Audio Fingerprinting Techniques for Real-Time Scalable Speech Retrieval and Speech Clusterization
Kemal Altwlkany, Sead DelaliÄ, Adis AlihodžiÄ +2
Audio fingerprinting techniques have seen great advances in recent years, enabling accurate and fast audio retrieval even in conditions when the queried audio sample has been highl…
Pretrained Conformers for Audio Fingerprinting and Retrieval
Kemal Altwlkany, Elmedin Selmanovic, Sead Delalic
Conformers have shown great results in speech processing due to their ability to capture both local and global interactions. In this work, we utilize a self-supervised contrastive…
Vocalize: Lead Acquisition and User Engagement through Gamified Voice Competitions
Edvin Teskeredzic, Muamer Paric, Adna Sestic +5
This paper explores the prospect of creating engaging user experiences and collecting leads through an interactive and gamified platform. We introduce Vocalize, an end-to-end syste…
Knowledge Distillation for Real-Time Classification of Early Media in Voice Communications
Kemal Altwlkany, Hadžem HadžiÄ, Amar KuriÄ +1
This paper investigates the industrial setting of real-time classification of early media exchanged during the initialization phase of voice calls. We explore the application of st…