AudioMath provides transformations commonly used when handling audio related units.
- Source:
Methods
(inner) coefToDB(coef, min, max, reverse, factor) → {number}
- Source:
Calculates a value in decibels from a value between 0.0 and 1.0 and some lower and upper boundaries in decibels.
Parameters:
| Name | Type | Description |
|---|---|---|
coef |
number | A value between 0.0 and 1.0. |
min |
number | The minimum value in decibels. |
max |
number | The maximum value in decibels. |
reverse |
boolean | If the scale is reversed. |
factor |
number | Changes the deflection of the logarithm if other than 1.0. |
Returns:
The result in decibels.
- Type
- number
(inner) coefToFreq(coef, min, max, reverse, factor) → {number}
- Source:
Calculates a value in hertz from a value between 0.0 and 1.0 and some lower and upper boundaries in hertz.
Parameters:
| Name | Type | Description |
|---|---|---|
coef |
number | A value between 0.0 and 1.0. |
min |
number | The minimum value in hertz. |
max |
number | The maximum value in hertz. |
reverse |
boolean | If the scale is reversed. |
factor |
number | Changes the deflection of the logarithm if other than 1.0. |
Returns:
The result in hertz.
- Type
- number
(inner) dBToCoef(value, min, max, reverse, factor) → {number}
- Source:
Calculates a linear value between 0.0 and 1.0 from a value and its lower and upper boundaries in decibels.
Parameters:
| Name | Type | Description |
|---|---|---|
value |
number | The value in decibels. |
min |
number | The minimum value in decibels. |
max |
number | The maximum value in decibels. |
reverse |
boolean | If the scale is reversed. |
factor |
number | Changes the deflection of the logarithm if other than 1.0. |
Returns:
A value between 0.0 (min) and 1.0 (max).
- Type
- number
(inner) dBToGain(value, factoropt)
- Source:
Calculates 10^(value / factor). Transforms a dBFS value to the corresponding gain.
Parameters:
| Name | Type | Attributes | Default | Description |
|---|---|---|---|---|
value |
number | A decibel value in dBFS. |
||
factor |
number |
<optional> |
20
|
The factor. |
(inner) dBToScale(value, min, max, reverse, factor) → {number}
- Source:
Calculates a linear value between 0.0 and scale. from a value and its lower and upper boundaries in decibels.
Parameters:
| Name | Type | Description |
|---|---|---|
value |
number | The value in decibels. |
min |
number | The minimum value in decibels. |
max |
number | The maximum value in decibels. |
reverse |
boolean | If the scale is reversed. |
factor |
number | Changes the deflection of the logarithm if other than 1.0. |
Returns:
A value between 0.0 and scale.
- Type
- number
(inner) freqToCoef(value, min, max, reverse) → {number}
- Source:
Calculates a linear value between 0.0 and 1.0 from a value and its lower and upper boundaries in hertz.
Parameters:
| Name | Type | Description |
|---|---|---|
value |
number | The value in hertz. |
min |
number | The minimum value in hertz. |
max |
number | The maximum value in hertz. |
reverse |
boolean | If the scale is reversed. |
Returns:
A value between 0.0 (min) and 1.0 (max).
- Type
- number
(inner) freqToScale(value, min, max, reverse) → {number}
- Source:
Calculates a linear value between 0.0 and scale from a value and its lower and upper boundaries in hertz.
Parameters:
| Name | Type | Description |
|---|---|---|
value |
number | The value in hertz. |
min |
number | The minimum value in hertz. |
max |
number | The maximum value in hertz. |
reverse |
boolean | If the scale is reversed. |
Returns:
A value between 0.0 and scale.
- Type
- number
(inner) gainToDB(value, factoropt)
- Source:
Calculates factor * log10(value). Transforms a gain value to the corresponding dBFS value.
Parameters:
| Name | Type | Attributes | Default | Description |
|---|---|---|---|---|
value |
number | A gain factor. |
||
factor |
number |
<optional> |
20
|
The factor. |
(inner) scaleToDB(value, min, max, reverse, factor) → {number}
- Source:
Calculates a value in decibels from a value between 0.0 and scale and some lower and upper boundaries in decibels.
Parameters:
| Name | Type | Description |
|---|---|---|
value |
number | A value between 0.0 and scale. |
min |
number | The minimum value in decibels. |
max |
number | The maximum value in decibels. |
reverse |
boolean | If the scale is reversed. |
factor |
number | Changes the deflection of the logarithm if other than 1.0. |
Returns:
The result in decibels.
- Type
- number
(inner) scaleToFreq(value, min, max, reverse, factor) → {number}
- Source:
Calculates a value in hertz from a value between 0.0 and scale and some lower and upper boundaries in hertz.
Parameters:
| Name | Type | Description |
|---|---|---|
value |
number | A value between 0.0 and scale. |
min |
number | The minimum value in hertz. |
max |
number | The maximum value in hertz. |
reverse |
boolean | If the scale is reversed. |
factor |
number | Changes the deflection of the logarithm if other than 1.0. |
Returns:
The result in hertz.
- Type
- number