Wow and flutter explained
Constant speed error and short-term speed variation are different problems.
Wow and flutter explained requires separating identification data, observations and user decisions. The process below improves repeatability without pretending to provide an automatic expert verdict.
Key principles
- Constant speed error and short-term speed variation are different problems.
- A phone app is approximate because the result also depends on sensors and device placement.
- For comparisons use the same method, duration and conditions.
Step-by-step process
- Collect information from the copy, equipment or manufacturer manual and record the source.
- Make one change or observation at a time so causes are not mixed.
- Record the outcome in the catalogue, listening log or equipment tracker with a date.
- For sale, service or reconfiguration keep the previous entry as history.
Common mistakes
Common problems come from copying settings from another model, ignoring the exact edition or treating an estimated calculator result as manufacturer guidance.
Checklist
- Are you identifying the exact copy and setup?
- Are you recording date, units and source?
- Does the manufacturer manual take priority?
- Did you back up the catalogue before a major change?