Programmer Guide/Command Reference/EVAL/hz2mel: Difference between revisions

Revision as of 16:13, 6 April 2011

Convert all elements of x from Hertz to Mel and vice versa.

Usage

hz2mel(x)

mel2hz(x)

Result

The result r has the same type as x and contains the converted elements of x.

hz2mel: r_i,j = 2595. * log10(1. + x_i,j / 700.) : 0.
bark2hz: Because the above formula is not directly invertable, an iteration algorithm is used to convert the x_i,j from Bark to the result r_i,j in Hz.

Note: Both functions are also available in the expressions used in the NUM and INT command.

See also: hz2mel, mel2hz, hz2erb, erb2hz, hz2cent, cent2hz, hth, lin2log, log2lin

@@ Line 1: / Line 1: @@
-{{DISPLAYTITLE:{{SUBPAGENAME}}}}
+{{DISPLAYTITLE:hz2mel, mel2hz}}
-=====hz2mel=====
+Convert all elements of ''x'' from Hertz to Mel and vice versa.
+;Usage: '''<code>hz2mel(<var>x</var>)</code>
+:'''<code>mel2hz(<var>x</var>)</code>
+:;<var>x</var>: a scalar, vector or matrix
+;Result: The result ''r'' has the same type as ''x'' and contains the converted elements of ''x''.
+:;'''hz2mel''': ''r''<sub>i,j</sub> = 2595. * log10(1. + ''x''<sub>i,j</sub> / 700.) : 0.
+:;'''bark2hz''': Because the above formula is not directly invertable, an iteration algorithm is used to convert the ''x''<sub>i,j</sub> from Bark to the result ''r''<sub>i,j</sub> in Hz.
+:Note: Both functions are also available in the expressions used in the [[Programmer_Guide/Command_Reference/NUM|NUM]] and [[Programmer_Guide/Command_Reference/INT|INT]] command.
-Hertz to Mel conversion.
+;See also: [[Programmer_Guide/Command_Reference/EVAL/hz2mel|hz2mel, mel2hz]], [[Programmer_Guide/Command_Reference/EVAL/hz2erb|hz2erb, erb2hz]], [[Programmer_Guide/Command_Reference/EVAL/hz2cent|hz2cent, cent2hz]], [[Programmer_Guide/Command_Reference/EVAL/hth|hth]], [[Programmer_Guide/Command_Reference/EVAL/log2lin|lin2log, log2lin]]
-=====Usage:=====
+[[Programmer_Guide/Command_Reference/EVAL#Functions|<function list>]]
-<code>hz2mel(<var>x</var>)</code>