App idea: Ranking the best headphones for raw frequency response with AutoEq data

Discussion in 'Headphone Measurements' started by David Smolinski, Sep 5, 2021.

  1. David Smolinski

    David Smolinski New

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    Jaakko Pasanen ranked headphones. You might be able to rank 3,937 of them with your target.
    1. Find/make your favorite target.
    2. For each headphone in AutoEq, calculate deviation from the target.
    3. Order headphones by rank.
    Jaakko Pasanen's AutoEq data has 3,937 headphones, and a bunch of targets. The headphone and target data would need to be organized and in the same format. I think it is.

    Example data
    target
    headphone CSV

    ideas for getting the target
    1. Use one of the AutoEq targets.
    2. Draw a target graph. Use Jaakko's instructions to get a CSV file from the graph.
    If I have time, I'll make an app to do this.
     
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    Last edited: Sep 5, 2021
  2. Woland

    Woland Friend

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    Hi David, you should read @purr1n 's recent comments in the HD8XX thread. He gave some thought to which and what kinds of deviations matter more.

    I'd be interested in a ranking after optimized EQ.
     
    Last edited: Sep 5, 2021
  3. David Smolinski

    David Smolinski New

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    Do you have any formula ideas for the deviation for a headphone?
    All the CSVs have a "frequency" and "raw" column, the same number of rows, and row numbers that match the same frequencies.
    my idea:
    Variables indicate the type of CSV, row number, and column name.
    target[i,raw] means the target CSV, row i, column raw
    deviation for a row = the absolute value of target[i,raw] - headphone[i,raw]
    Sum the deviation for all rows.
     
  4. Woland

    Woland Friend

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    Sum of absolute deviations is not ideal.

    Multiple sharp deviations at different locations are much worse than a wide deviation at one end, even though the sum of deviations would be the same. Peaks are much worse than troughs. Double sized peaks are more than 2x worse...
     

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