FRB

Note: This specification is currently in an experimental and validation phase.

What is FRB?

FRB (Fishing Rod Benchmark) is

a proposed common metric and measurement framework
for capturing and comparing fishing rod “sensitivity” as vibration.

Traditionally, “sensitivity” has been described as human experience:

FRB introduces a different perspective:

Sensitivity is redefined as a structure of vibration.

Background

Rod sensitivity has historically been described using vague terms such as:

However,

even when people say “high sensitivity,”
the actual experience differs from person to person.

A Shift in Perspective

In the PC world, storage performance is evaluated using metrics such as:

In contrast, in the fishing rod world,

only subjective expressions exist:

FRB introduces a new idea:

to measure sensitivity itself.

In other words,

FRB transforms
experienced sensation into a measurable phenomenon.

Relationship to SSD Benchmarking

FRB applies the concept of performance benchmarking to fishing rods.

Category FRB Target User SSD Benchmark Target User
Phase 1 Surface Response (frequency-based score) Beginners Sequential (Read / Write) General users
Phase 2 Simulated Bite Response Intermediate+ IOPS (I/O per second) Advanced users

Definition

In FRB,

Sensitivity = characteristics of vibration

FRB Architecture

A structural overview of FRB:

image.png

Relationship to Traditional “Sensitivity”

Traditional classifications:

These are all based on human perception.

FRB redefines them as vibration structures:

FRB decomposes and reconstructs
the ambiguous concept of sensitivity.

Measurement Targets

FRB focuses on:

These represent

what humans are actually perceiving.

Phase Structure (Draft Definition)

FRB separates:

Phase 1 (Fundamental Metrics)

Overview

Continuous contact input generates vibration,
allowing evaluation of

vibration characteristics (magnitude and frequency)

Phase1 Score

Evaluates vibration magnitude and frequency distribution:

“How much vibration is present”

Example:

:::note info Phase1 Score (Surface Response)

J: 99 (Carpet: low-frequency response)
F: 85 (Flooring: mid-frequency response)
S: 72 (Stainless: high-frequency response) :::

Phase1 Input (Test)

Vibration is generated by rubbing the rod against materials.

This method is called:

FRB Surface Response Test

Phase 2 (Applied Metrics)

Overview

Input is defined as changes in tension along the line,
evaluating the rod’s

response characteristics (transmission and perception)

Phase2 Score

Evaluates transmission efficiency and response characteristics:

“How the rod responds to changes in load”

Fish bites, physically, are changes in force:

All of these can be observed as

changes in line tension (load variation).

Example:

:::note info FRB Phase2 Score (Simulated Bite Response)

Impulse: 92 (impact response)
Suction: 78 (pull-in response)
Weed: 65 (interference response) :::

Phase2 Input (Test)

Simulated load changes equivalent to fish bites are applied
to the rod under controlled conditions.

This method is called:

FRB Phase2 Bite Simulator

(e.g., rubber bands, springs, controlled tension release)

Input methods are currently under validation.

Design Philosophy

FRB is based on the following principles:

Scalability and Simplicity

Each phase is limited to:

While allowing expansion through additional phases.

Complexity is absorbed by structure,
while keeping interpretation simple.

FRB is not designed for evaluation,

but for selection.

Reproducibility

FRB prioritizes not absolute precision, but:

reproducibility under consistent conditions

Key Point

FRB does NOT measure catch results.

It measures:

the structure of what is being perceived.

Vision

Instead of saying:

“This rod is sensitive”

we aim to say:

“This rod has these vibration characteristics”

Current Status

This definition is still in the draft stage.

However, at least one thing can be stated:

Rod differences can be captured
as vibration.

(Next)
Why has rod sensitivity never been quantified? — FRB Motivation

FRB is not a metric for evaluation,
but a metric designed for selection.

Revision History