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Zafar Ahmad
@zafarahmad577
Level 1
Biomedical Signal Processing, Audio and Music Engineering
Pakistan
English, Arabic
About me
Dive into advanced audio signal processing with my expertise! I specialize in preparing audio signals for deep learning, blending raw sound with technological innovation. My skills cover spectral analysis, pitch-shifting, and signal denoising. Beyond processing, I transform audio data for enhanced model training and generalization. Join me in revolutionizing audio processing for deep learning, where every sound is a step towards groundbreaking advancements.
Skills
Zafar Ahmad
Offline •
Average response time: 1 hour
See my services
Consultation
I will do spectral analysis of your audio signals
Programming & Tech
I will do biomedical and audio signal processing pcg ecg specialist
Portfolio
Work experience
Research Assistant
Qatar University • Full-time
May 2023 - Present • 3 yrs
• Developed 5-class phonocardiogram classification using 1D CNN with pitch-shifting augmentation, achieving 99.6% accuracy, 99.8% specificity, 99.2% sensitivity (published at EUSIPCO 2024 as first author) • Developing Copula-based Coupled Hidden Markov Models (Copula-CHMM) for simultaneous ECGPCG analysis to investigate dependency structures between electrical and mechanical cardiac activity • Contributing to 8-class pediatric heart disease classification using parallel multi-scale analysis (journal paper under compilation for IEEE JSTSP, November 2025) • Co-authored research grant proposal on simultaneous PCG-ECG signal analysis, submitted to Qatar University Office of Research Support (ORS) Internal Grants (September 2025)
6 Reviews
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1-5 out of 6 Reviews
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ragein
Repeat Client
United States
As always Zafar was receptive, involved and exceeded all expectations. He was knowledgeable of the subject and went above and beyond in delivering a final product.
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ragein
Repeat Client
United States
Zafar, is a consumate professional who went above and beyond to get the concepts right and to ask great follow up questions. He keeps timelines and even for a not so tech person made me understand the steps and the processes. I will definitely work with him again in the future.
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ragein
Repeat Client
United States
Zafar understood the assignment and delivered exactly what I was looking for. Will definitely work with him in the future.
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samwell640
Repeat Client
United Kingdom
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samwell640
Repeat Client
United Kingdom
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