GUWAHATI: A scientific study published in the internationally renowned Journal of Voice has unravelled the acoustic secrets behind the distinctive humming style of Assamese music icon Zubeen Garg, offering a research-backed explanation for a vocal trademark that has captivated listeners for decades.
ALSO READ: Guwahati Police Seize and Destroy 100 Litres of Illegal Liquor Near Railway Gate No. 3
The study, believed to be among the first systematic scientific investigations of Garg’s humming technique, employed advanced voice-science and acoustic analysis methods commonly used in laryngology and vocal research. Researchers examined several vocal parameters, including jitter, shimmer, harmonic-to-noise ratio (HNR) and timbral characteristics, to understand what makes the singer’s humming uniquely appealing.
According to the findings, Garg’s humming is characterised by remarkable vocal stability, a comparatively low fundamental frequency and distinctive timbral features.
Researchers said these acoustic properties work together to create the soothing, emotionally resonant and deeply engaging quality that has become synonymous with the singer’s voice.
The study also identified statistically significant differences between the acoustic characteristics of Garg’s humming and his conventional singing style, suggesting that his humming represents a distinct vocal expression rather than merely an extension of his singing technique.
Published in the Journal of Voice—the official journal of The Voice Foundation and the International Association of Phonosurgery—the research seeks to bridge the gap between artistic expression and voice science by translating elements of Garg’s vocal artistry into measurable acoustic parameters.
The study was independently conducted by researchers from the Department of Physics at Sadiya Girls' College using modern sound-analysis techniques. Researchers said the findings could contribute to future work in voice science, musicology and acoustic research, while also introducing Assam’s contemporary musical heritage to a broader international scientific audience.
Drawing attention to the publication in a Facebook post on Saturday, Garima Garg noted that the singer’s humming has long been described by admirers as “heart-touching”, “peace-inducing” and “magnetic”.
She observed that while Garg has often been celebrated as the “Humming King of the World” by fans, media outlets and online communities, the title had largely rested on popular acclaim rather than scientific examination of the vocal characteristics behind his humming.
Referring to the newly published research, she said the study had, for the first time, scientifically explored the acoustic foundations of Garg’s signature vocal style through detailed profiling of multiple voice parameters.
According to Garima Garg, researchers analysed pitch variation, amplitude variation, harmonic-to-noise ratio and timbral features, among other characteristics. The study found that Garg’s humming exhibits a highly controlled and stable vocal waveform. Its relatively low fundamental frequency contributes to a deep, melodious and calming sound, while elevated jitter levels introduce subtle variations that enhance emotional depth, expressiveness and vocal richness.
The research also identified significant differences in timbral features, particularly in MFCC 2 and MFCC 11 parameters, which were found to contribute to the distinctive tonal identity of Garg’s humming.
Garima Garg said the study portrays the singer’s humming not merely as a musical technique but as a unique acoustic phenomenon shaped by the biological structure of his vocal tract and the specific vibration patterns of his vocal cords. The findings suggest that the humming achieves a rare balance between acoustic stability—evidenced by high HNR and low shimmer values—and expressive vocal nuances created through delicate frequency variations.
She added that the research was conceived as a tribute to Garg’s lifelong musical journey and aimed to scientifically investigate the qualities that have made his voice one of the most recognisable in contemporary Indian music.
The publication has also sparked discussion among music enthusiasts and linguists about the possibility of finding a suitable Assamese term to describe Garg’s signature humming style and encapsulate the essence of the title by which he is affectionately known among his admirers.