Programmer Guide/Command Reference/EVAL/hz2mel - Revision history

193.171.195.48 at 09:55, 21 April 2011

2011-04-21T09:55:14Z

← Older revision		Revision as of 11:55, 21 April 2011
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	{{DISPLAYTITLE:hz2mel, mel2hz}}		{{DISPLAYTITLE:hz2mel, mel2hz}}
	Convert all elements of ''x'' from Hertz to Mel and vice versa.		Convert all elements of ''x'' from Hertz to Mel and vice versa.
	;Usage: ~~'''~~<code>hz2mel(<var>x</var>)</code>		;Usage: <code>hz2mel(<var>x</var>)</code>
	:~~'''~~<code>mel2hz(<var>x</var>)</code>		:<code>mel2hz(<var>x</var>)</code>
	:;<var>x</var>: a scalar, vector or matrix		:;<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''.		;Result: The result ''r'' has the same type as ''x'' and contains the converted elements of ''x''.
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	::''x''<sub>i,j</sub> is the frequency in Mel and must be greater than 0		::''x''<sub>i,j</sub> is the frequency in Mel and must be greater than 0

	;See also: [[~~Programmer_Guide/Command_Reference/EVAL~~/hz2bark\|hz2bark, bark2hz]], [[~~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]]		;See also: [[../hz2bark\|hz2bark, bark2hz]], [[../hz2erb\|hz2erb, erb2hz]], [[../hz2cent\|hz2cent, cent2hz]], [[../hth\|hth]], [[../log2lin\|lin2log, log2lin]]

	[[~~Programmer_Guide~~/~~Command_Reference/EVAL~~#Functions\|<function list>]]		[[../#Functions\|<function list>]]

Toni at 14:17, 6 April 2011

2011-04-06T14:17:44Z

← Older revision		Revision as of 16:17, 6 April 2011
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	:;<var>x</var>: a scalar, vector or matrix		:;<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''.		;Result: The result ''r'' has the same type as ''x'' and contains the converted elements of ''x''.
	:;'''hz2mel''': ''r''<sub>i,j</sub> = 2595 * log~~''x''~~<sub>10</sub>(1 + ''x''<sub>i,j</sub> / 700)		:;'''hz2mel''': ''r''<sub>i,j</sub> = 2595 * log<sub>10</sub>(1 + ''x''<sub>i,j</sub> / 700)
	::''x''<sub>i,j</sub> is the frequency in Hz and must be greater than 0		::''x''<sub>i,j</sub> is the frequency in Hz and must be greater than 0
	:;'''mel2hz''': ''r''<sub>i,j</sub> = 700 * (10 ^ (''x''<sub>i,j</sub> / 2595) - 1.)		:;'''mel2hz''': ''r''<sub>i,j</sub> = 700 * (10 ^ (''x''<sub>i,j</sub> / 2595) - 1)
	::''x''<sub>i,j</sub> is the frequency in Mel and must be greater than 0		::''x''<sub>i,j</sub> is the frequency in Mel and must be greater than 0

Toni at 14:17, 6 April 2011

2011-04-06T14:17:07Z

← Older revision		Revision as of 16:17, 6 April 2011
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	:;<var>x</var>: a scalar, vector or matrix		:;<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''.		;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.		:;'''hz2mel''': ''r''<sub>i,j</sub> = 2595 * log''x''<sub>10</sub>(1 + ''x''<sub>i,j</sub> / 700)
	:;'''~~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~~.		::''x''<sub>i,j</sub> is the frequency in Hz and must be greater than 0
	:~~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.~~		:;'''mel2hz''': ''r''<sub>i,j</sub> = 700 * (10 ^ (''x''<sub>i,j</sub> / 2595) - 1.)
			::''x''<sub>i,j</sub> is the frequency in Mel and must be greater than 0

	;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]]		;See also: [[Programmer_Guide/Command_Reference/EVAL/hz2bark\|hz2bark, bark2hz]], [[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]]

	[[Programmer_Guide/Command_Reference/EVAL#Functions\|<function list>]]		[[Programmer_Guide/Command_Reference/EVAL#Functions\|<function list>]]

Toni at 14:13, 6 April 2011

2011-04-06T14:13:33Z

← Older revision		Revision as of 16:13, 6 April 2011
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	{{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~~>

Admin: 1 revision: Initial import

2010-11-18T16:31:39Z

1 revision: Initial import

← Older revision	Revision as of 18:31, 18 November 2010
(No difference)

193.171.195.8: initial import

2010-05-17T13:05:27Z

initial import

New page

{{DISPLAYTITLE:{{SUBPAGENAME}}}}
=====hz2mel=====

Hertz to Mel conversion.

=====Usage:=====

<code>hz2mel(<var>x</var>)</code>