# aequidistanten Wellenlaengenschritten

## English translation: equidistant wavelength steps

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 04:19 Jan 22, 2003
German to English translations [PRO]
Tech/Engineering
 German term or phrase: aequidistanten Wellenlaengenschritten Neben dem 3D-Spektrum mit aequidistanten Wellenlaengenschritten koennen weitere Abklingkurven an fest vorgegebenen Wellenlaegngenpositionen aufgezeichnet werden.
 Local time: 03:27
 English translation:equidistant wavelength steps Explanation:At least I know there's such a thing as wavelength steps.--------------------------------------------------Note added at 2003-01-22 04:27:42 (GMT)--------------------------------------------------Computing Spectrum Coordinates In addition to printing values of sensitivity functions at arbitrary wavelength steps the program may also be used to evaluate stimulus spectra by computing color coordinates. The radiance spectrum has to be tabulated in equal wavelength steps in an input file.
Selected response from:

Kim Metzger
Mexico
Local time: 12:27
 Danke schoen, Herr Metzger!4 KudoZ points were awarded for this answer

3 +4equidistant wavelength steps
 Kim Metzger
4 +1equally spaced frequency bandsChris Rowson

3 mins   confidence: peer agreement (net): +4
equidistant wavelength steps

Explanation:
At least I know there's such a thing as wavelength steps.

--------------------------------------------------
Note added at 2003-01-22 04:27:42 (GMT)
--------------------------------------------------

Computing Spectrum Coordinates
In addition to printing values of sensitivity functions at arbitrary wavelength steps the program may also be used to evaluate stimulus spectra by computing color coordinates. The radiance spectrum has to be tabulated in equal wavelength steps in an input file.

Reference: http://www.arcetri.astro.it/science/spettro/file_spettro_200...
 Kim MetzgerMexicoLocal time: 12:27Native speaker of: EnglishPRO pts in pair: 21848
 Danke schoen, Herr Metzger!

agree
 12 mins
-> Thanks for a confirmation from someone who understands this subject.

agree  Gillian Scheibelein: equally spaced wavelength intervals, perhaps
 2 hrs

agree
 3 hrs

agree
 4 hrs

1 hr   confidence: peer agreement (net): +1
equally spaced frequency bands

Explanation:
In speaking of spectrum analysis in English, we more often talk of frequencies and frequency bands or frequency domains then of wavelengths.

We also do not focus on the boundaries between them, but on the centre points. This is because a spectrum analyser will in the end always analyse and represent the energy at the centre frequency. The boundary points are not precisely covered. They are also not precisely defined: when we define the frequency bands we always refer to the centre frequencies, e.g. 1kHz, 2kHz, 4 kHz etc.

Thus I think the English phrase that is appropriate here is "equally spaced frequency bands". The "vorgegebenen Wellenlängenpositionen" are then "fixed frequencies" or "specified frequencies".

--------------------------------------------------
Note added at 2003-01-23 01:40:43 (GMT)
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I can´t comment on IR spectroscopy, but for musical acoustics, at least, it is frequency that is to be used.

Trying to get a more general view, I googled on \"spectrum analysis\" + wavelength and \"spectrum analysis\" + frequency. There were about 6 times as many hits for frequency as for wavelength.

Google hits for \"spectrum analysis\" + \"wavelength steps\" = 3
Google hits for \"spectrum analysis\" + \"frequency bands\" = 856

These results do not of course prove anything - Google results depend on queries submitted, and can be very misleading. However, it does it least appear to indicate that what I know from professional experience in music also has broader application.

 Chris RowsonLocal time: 19:27Native speaker of: EnglishPRO pts in pair: 768

neutral  Gillian Scheibelein: again, wavelengths are inversely proportional to frequencies. If this is IR spectroscopy, in particular, the wavelengths are discussed (cm-1) and not frequencies (Hz)
 52 mins
-> My experience of spectral analysis is in connection with acoustics for musical purposes. We do speak of wavelengths in this field, but spectrum analysers used have frequency bands labelled with the centre frequency.

agree  Zareh Darakjian Ph.D.: Yes, Gillian, but cm^-1 is not a unit of wavelength, but wavenumber which is closely related to frequency. But here it is wavelegth that is to be used.
 13 hrs

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