Practical Measurement - Loudspeaker Distortion

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Baffel
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Practical Measurement - Loudspeaker Distortion

Inläggav Baffel » 2021-01-01 01:39

Här får ni en godnatt nyårs litteratur . :D

The goal of this paper is to find a better way to correlate loudspeaker distortion measurements with perception. Since sound quality is very subjective, we first focused on distortion audibility. In other words, we want to be able to predict if the distortion we measure is audible to the average human being. In a future paper, we hope to address in more detail not just whether the distortion is audible, but how subjectively bad it sounds.

Our aim was to quantify how loud the distortion sounds irrespective of frequency, level, number of harmonics and noise, yet also identify the frequency and sound
pressure level at which the perceived distortion loudness occurs so that we can be able to describe the conditions under which it takes place.

In order to quantify distortion audibility, we used masking curves to determine whether the distortion we measured was audible and our PEAQ algorithm to determine how loud in phons the distortion sounded.


https://www.researchgate.net/publicatio ... tual_Model

Det är nog mycket övning och erfarenheter som spelar in hur man upplever distorsionen. I-or är som en blodhund med distorsionssniffandet . Jag , mja men jag är helt säker bättre på det är morsan. I annat fall skulle jag äta upp min hatt.

Gott Nytt distfritt år :D

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Baffel
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Re: Practical Measurement - Loudspeaker Distortion

Inläggav Baffel » 2021-01-01 10:05

Säkert superintressant men vem orkar läsa detta idag?. Tycker det mesta distar nu .. Brrr.
Återkommer när disten släpper.

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Baffel
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Re: Practical Measurement - Loudspeaker Distortion

Inläggav Baffel » 2021-01-01 21:17

Aha det handlar även om sudda produktion av högtalare.

There are several measured types of distortion including harmonic, intermodulation, and added noise. Commonly, high-order harmonic distortions are grouped under the descriptive term of “Rub & Buzz”. These distortions are created in the loudspeaker by various mechanical defects such as the voice coil rubbing the magnet, the cone touching connection wires, etc… and are outlined in the next section.

Detecting Rub & Buzz is a critical production line measurement used to decide whether a speaker passes or
fails QC inspection. Unfortunately, this added distortion must be judged in the light of how it is perceived by the
listener which solidly enters the problem into the area of psychoacoustics. The following sections describe the various mechanical
defects and their resultant distortions and their effects.
Senast redigerad av Baffel 2021-01-01 21:35, redigerad totalt 1 gång.

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jonasp
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Re: Practical Measurement - Loudspeaker Distortion

Inläggav jonasp » 2021-01-01 21:28

Produktion menar du nog, inte konstruktion.
Grundare och VD i Acoustic Illusion AB


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