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Speech Processing Pioneer Bishnu Saroop Atal Dies at 93
Publication: IEEE Spectrum
Author: Amanda Davis
Source published: 10/11/2026, 19:00:02 UTC
Briefing created: 10/11/2026, 19:39:49 UTC
Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 10/11/2026, 19:13:24 UTC.
Briefings
Bishnu Saroop Atal, an acoustics and signal processing pioneer, died at age 93 after retiring in 2002. He was a Life Fellow at Bell Labs and AT&T, known for developing linear predictive coding (LPC) and code-excited linear prediction (CELP) techniques that enabled efficient voice transmission over cellular networks. He received the 2013 IEEE Jack S. Kilby Signal Processing Medal for his contributions to speech coding. His work at Bell Labs began in 1961, and he continued research at AT&T until retirement, where he earned the National Academy of Engineering and National Academy of Sciences fellowships.
Key points
- Bishnu Saroop Atal was an acoustics and signal processing researcher at Bell Labs and AT&T who developed linear predictive coding (LPC) and code-excited linear prediction (CELP) techniques.
- Atal received the 2013 IEEE Jack S. Kilby Signal Processing Medal for fundamental and pioneering contributions to speech coding.
Context
Atal's pioneering work on voice-coding techniques became the foundation for efficient, high-quality voice transmission over cellular networks, expanding cellular capacity. His career spanned from 1961 to 2002, starting at Bell Labs in Murray Hill, N.J., and later at AT&T's Shannon Laboratory in Florham Park, N.J.
Limitations
Evidence covers only Atal's life and career; no data on his family, specific research outcomes, or post-retirement impact is provided.
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