String Log, Discover & Community, and String QA

This guide explains guitar profile management, string exchange tracking, inventory management, restringing alerts, the "Discover & Community" feature for exploring global string specs and comparing user reviews and guitars, and quantitative string evaluation using String Quality Assessment (String QA).

Supported Applications

• String Exchange Logs, Inventory, Discover & Community (Search & Community), and Alerts: Classical Guitar Suite (CG Suite) Exclusive (tune Strings Tab / explore Discover Tab)
• String Quality Assessment (String QA): Supported in Classical Guitar Suite (CG Suite) and Pulsar Tuner (analytics Tab)

Limitations in Lyra Score

Lyra Score is a dedicated sheet music reader for all musicians and does not include string exchange logs, Discover & Community, or String QA diagnostics.

Guitar Profiles & String Exchange Logs CG Suite Only

In Classical Guitar Suite (CG Suite), register your guitars and keep detailed logs of string changes, tone characteristics, and lifespan.

1. Registering Guitars

Register instruments from person Account. Setting the luthier, soundboard wood (Spruce/Cedar), and scale length (e.g., 650mm, 640mm, 630mm) automatically informs tuner tension compensation and String QA calculations.

2. Logging String Changes (Sets & Hybrid Combinations)

Tap Add (add) on the tune Strings tab to record a change.

• Full Sets & Hybrid Mixes: Record a standard set or log custom combinations (e.g., carbon trebles paired with silver-plated wound basses).
• Date & Inventory Integration: Pick the installation date on the date_range calendar and deduct sets automatically from your inventory stock.
• Reviews & Sound Notes: Record impressions, tension feel, and star ratings (star) in the rate_review review section.

Figure: Active string set dashboard showing days elapsed, tuning history, and inventory

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Discover & Community (String Database, Search & Compare) CG Suite Only

In the explore Discover tab of Classical Guitar Suite (CG Suite), browse a comprehensive database of classical guitar string specifications from manufacturers worldwide, and participate in a vibrant community sharing reviews, guitar profiles, and timbre analysis data.

Use the top tab bar to switch between three specialized sub-views: Search & Compare, Community Strings, and Community Guitars.

1. String Specification "Search & Compare" search

Explore comprehensive data covering major classical guitar string manufacturers around the world (Savarez, D'Addario, Hannabach, Augustine, Knobloch, Aquila, La Bella, etc.). Review exact physical measurements for each string (1st to 6th), including core/wrap material, gauge diameter (mm / inch), unit tension (kg / lbs), and aggregate set tension (Total Tension).

Multi-Criteria Filtering Panel (Available Conditions)

Expand the tune Filters panel to filter the extensive database according to your exact preferences:

• Brand: Limit results to specific manufacturers (Savarez, D'Addario, Hannabach, etc.)
• Search by model name: Free-text search for model names, product codes, or series (e.g., "Creation Cantiga", "EXP45")
• Coating: All / Coated only / Non-coated only
• End type: Traditional tie-end / Ball-end
• Surface finish: Standard finish / Polished (reduced finger noise)
• Individual String Material Selection:
  • 1st string: Nylon / Fluorocarbon / Titanium / Gut, etc.
  • 2nd string: Nylon / Fluorocarbon / Titanium / Gut, etc.
  • 3rd string: Nylon / Fluorocarbon / Titanium / Gut, etc.
• Total tension range slider: Fine-tune minimum and maximum tension thresholds in kg or lbs (includes an "Include strings with unknown tension" toggle)

Side-by-Side 2-Set Comparison compare_arrows & Favorites star

• Specification Comparison Sheet: Tap the Compare button (compare_arrows) on any string card to add up to two sets to the bottom comparison dock. Compare gauges, materials, individual tensions, and overall tensions side-by-side.
• Favorites: Bookmark candidate sets using the star icon (star_border / star) to retrieve them instantly from the sort menu.

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2. "Community Strings" – Explore Real-World Combinations & Reviews queue_music

The Community Strings tab features an open feed where guitarists worldwide share their real-world "Guitar (Luthier / Model) × String" combinations and hands-on impressions.

• Setup Context & Days Elapsed: See exactly which guitar was used, how many days the strings were played, and whether the review reflects active use or post-removal impressions.
• Multi-Dimensional Tone & Feel Ratings: Inspect detailed slider metrics for volume, brightness, softness, heaviness, separation, sustain, intonation, and durability, alongside overall star ratings and optional audio playback snippets.
• Brand & Model Filtering: Filter reviews by specific string manufacturers or models.

How to Share Your Review with the Community

In your guitar's string log (rate_review String Edit screen), turn ON the "Allow this log to be shared with the community" (isPublic) switch.

"Enabling this will allow other users to view your review in the Public Feed."Note: If you have personal notes you wish to keep private, simply keep this toggle OFF.

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3. "Community Guitars" & Objective Timbre Comparison music_note

The Community Guitars gallery showcases classical guitars registered and shared by fellow players worldwide.

• Detailed Instrument Specifications: Inspect comprehensive luthier profiles, build year, soundboard wood (Spruce/Cedar), back and sides wood (Brazilian Rosewood, Indian Rosewood, Maple, etc.), scale length (mm), nut width, 1st/6th fret action (mm), and finish type (French polish / lacquer).
• Search & Filtering: Real-time search across luthiers, brands, wood varieties, and owner nicknames.

How to Publish Your Guitar to the Showcase

Navigate to person Account or the My Guitars list, open your guitar edit dialog, and toggle ON the switch (public) for "Make this guitar public" (isPublic).

"Allows other users to view your guitar specs in reviews and public guitar showcase."

Timbre Analysis Display & Cross-Guitar Comparison graphic_eq

When you record a sound test in the Timbre Analyzer, your guitar's acoustic scan results (spectral centroid brightness, decay times, odd/even harmonic ratios, and sustain curves) are logged and displayed on its public profile timeline.

• "Compare this timbre with your records" (compare_arrows): On any shared guitar detail page, tap this button next to any recorded take to open an interactive side-by-side comparison sheet against your own guitars' recorded timbre benchmarks.

Safety & Moderation Controls flag

Every community post includes reporting tools (flag) and user-blocking options (block) to maintain a supportive, positive community environment.

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Degradation Tracking & Restringing Reminders CG Suite Only

• Tuning Stability & Settling: Correlate Auto Lock tuning data and timbre scans to track initial string stretch settling and identify when wound bass overtones begin to deaden.
• Restringing Reminders: Schedule proactive notifications (notifications_active) based on days elapsed or ahead of important concerts and recitals.

Limitations in Pulsar Tuner

Pulsar Tuner does not include guitar databases, string inventory tracking, Discover & Community feeds, or reminder notifications. For multi-instrument logging and community comparisons, use Classical Guitar Suite (CG Suite).

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String Quality Assessment (String QA) CG Suite / Pulsar

Even fresh strings straight from the package can occasionally suffer from manufacturing variances (cross-sectional ovality) or fret wear—manifesting as false beats (wah-wah flutter on single notes) or poor 12th-fret octave intonation. String QA objectively quantifies these physical anomalies across four streamlined steps.

4-Step Diagnostic Procedure

Position your device microphone roughly 30–40 cm from the guitar soundhole in a quiet environment. Tap refresh at any stage to re-measure.

1. Step 1: String, Material & Scale Length Selection
   • Select the target string (1st to 6th), material (Nylon / Carbon / Gut), and scale length (automatically preset in Classical Guitar Suite).
2. Step 2: Open String Uniformity & Roundness
   • Pluck the open string firmly once and let it ring for 2.5 to 3.0 seconds.
   • High-resolution FFT analyzes the rigidity factor $B$ (inharmonicity), cross-sectional eccentricity beat frequency (Hz) & modulation depth (%), and sustain decay envelope.
3. Step 3: 12th-Fret Octave Accuracy
   • Follow on-screen prompts to pluck the 12th-fret natural harmonic followed by the 12th-fret fretted note.
   • Phase-vocoder tracking measures cent deviation relative to theoretical pitch.
4. Step 4: Comprehensive QA Report Card
   • Evaluates roundness, harmonic uniformity, octave intonation, and sustain decay on a unified card.

Figure: String QA 4-step workflow, sustain decay curve, and benchmark distributions

Saving Cloud History vs. Standalone Checks

• Classical Guitar Suite (CG Suite): Tap Save (save) to store the assessment to your active guitar's string history. Review past curves via history to compare fresh vs. aged sustain, or benchmark your strings against global brand distributions (median and interquartile range IQR).
• Pulsar Tuner: Conduct instant standalone checks to detect defective strings on the spot without saving to the cloud.