hz2bark

Convert from hertz to Bark scale

Description

example

bark = hz2erb(hz) converts values in hertz to values on the Bark frequency scale.

Examples

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Set two bounding frequencies in Hz and then convert them to the Bark scale.

b = hz2bark([20,8000]);

Generate a row vector of 32 values uniformly spaced on the Bark scale.

barkVect = linspace(b(1),b(2),32);

Convert the row vector of values into equivalent frequencies in Hz.

hzVect = bark2hz(barkVect);

Plot the two vectors for comparison. As Bark values increase linearly, Hz values increase exponentially.

plot(barkVect,hzVect,'o')
title('Bark vs Hz')
xlabel('Bark')
ylabel('Hz')
grid on

Input Arguments

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Input frequency in Hz, specified as a scalar, vector, matrix, or multidimensional array.

Data Types: single | double

Output Arguments

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Output frequency on the Bark scale, returned as a scalar, vector, matrix, or multidimensional array the same size as hz.

Data Types: single | double

Algorithms

The frequency conversion from Hz to the Bark scale uses the following formula:

bark=(26.81)(hz)1960+hz0.53if:bark<2bark=bark+(0.15)(2bark)if:bark>20.1bark=bark+(0.22)(bark20.1)

The Bark value correction occurs after the conversion from Hz to the Bark scale.

References

[1] Traunmüller, Hartmut. "Analytical Expressions for the Tonotopic Sensory Scale." Journal of the Acoustical Society of America. Vol. 88, Issue 1, 1990, pp. 97–100.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Introduced in R2019a