Equation 6 · Part 2 · Comparing the Main Approaches to Edge AI Electronics and Sensor Systems
subscript
subscript
What this part means
The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.
Its job in the formula
A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.
Full expression→subscript→Article meaning
The passage around this formula
where D is the fraction of time spent actively computing and is the power drawn the rest of the time. For a keyword detector or a vibration monitor, D is typically small and falling, so is dominated by almost regardless of how fast the active phase runs — which is exactly why this category optimises the idle floor first and peak throughput second, the opposite priority from a dedicated accelerator sized for a known, recurring, higher-duty workload.
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
Sources cited in the article section
- [5] Eyeriss: An Energy-Efficient Reconfigurable Accelerator for Deep Convolutional Neural Networks ↗
- [11] Ethos-U55 microNPU ↗
- [17] Cadence Expands Tensilica IP Portfolio with New HiFi and Vision DSPs for Pervasive Intelligence and Edge AI Inference ↗
- [7] CMSIS-NN: Efficient Neural Network Kernels for Arm Cortex-M CPUs ↗
- [8] TensorFlow Lite Micro: Embedded Machine Learning on TinyML Systems ↗
These citations provide research context; check each source for the exact claim it supports.