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Arm measures the accuracy-latency tradeoff in on-device speech recognition

Arm engineers published an ExecuTorch study of Nemotron 3.5 streaming speech recognition, including a Pixel 11 deployment. In their host accuracy evaluation, extending audio chunks from 80 to 1,120 milliseconds reduced half-precision word error rate from 15.2% to 11.5%.

Longer chunks also make users wait longer for text. Device profiling separately measured processing time, using a short recording and a single measured run after warm-ups. The study supplies an evaluation method and a concrete tradeoff, not a universal phone-performance ranking. SourcesA

Sources

• AArm measures the accuracy-latency tradeoff in on-device speech recognitionpytorch.org

This story ran in the Morning Brief of October 27th 2026.