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Difference between revisions of "Sound Quality Lite"
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→FAQ about loundness
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==FAQ about loundness == | ==FAQ about loundness == | ||
When we compute the loudness in Sound Quality Lite we get the above list of results in NVGate. | When we compute the loudness in Sound Quality Lite we get the above list of results in NVGate. | ||
[[File:loudness.png|400px]] | [[File:loudness.png|400px]] | ||
Let’s find below the explanation of this loudness | Let’s find below the explanation of this loudness | ||
• ISO532-1 Specific loudness ch 1 | |||
• '''ISO532-1 Specific loudness ch 1''' | |||
According to the standards ISO532-1 : It is computed on the whole signal, it computed a loudness value in every 2 ms. | According to the standards ISO532-1 : It is computed on the whole signal, it computed a loudness value in every 2 ms. | ||
• ISO532-1 : Loudness ch1 | |||
• '''ISO532-1 : Loudness ch1''' | |||
According to the standards ISO532-1 : the spectrum is computed on the whole signal. The standards is for stationary signal. | According to the standards ISO532-1 : the spectrum is computed on the whole signal. The standards is for stationary signal. | ||
• Psycho: Specific Loudness ch1” and “Psycho:loudness ch 1 | • '''Psycho:''' Specific Loudness ch1” and “Psycho:loudness ch 1 | ||
Not standardize loudness, but based on DIN 45631/A1-2010. (One value every 2 ms for profile, and compute on the whole signal for the spectrum) | Not standardize loudness, but based on DIN 45631/A1-2010. (One value every 2 ms for profile, and compute on the whole signal for the spectrum) | ||
• Psycho IS0 532 B : | • '''Psycho IS0 532 B:''' | ||
According to IS0 532 B. It is computed on the whole signal, the standard is used for stationary signal, so there is only one value. | According to IS0 532 B. It is computed on the whole signal, the standard is used for stationary signal, so there is only one value. | ||
• ISO532-2: Loudness Ch1: | • '''ISO532-2: Loudness Ch1:''' | ||
ISO532-2 standard : It is the “American Loudness standard” (This standard replaces ISO 532 A (loudness according to Stevens) and it is based on ANSI S3.4-2007 standard for calculating stationary loudness according to Moore. | ISO532-2 standard : It is the “American Loudness standard” (This standard replaces ISO 532 A (loudness according to Stevens) and it is based on ANSI S3.4-2007 standard for calculating stationary loudness according to Moore. | ||
It is computed on the whole signal, the standard is used for stationary signal, so there is only one value. | It is computed on the whole signal, the standard is used for stationary signal, so there is only one value. | ||