A comparison of the frequency modulation transfer function with the modulation transfer function in a Room
Identifieur interne : 000F67 ( Main/Exploration ); précédent : 000F66; suivant : 000F68A comparison of the frequency modulation transfer function with the modulation transfer function in a Room
Auteurs : Leon Rutkowski [Pologne]Source :
- Applied Acoustics [ 0003-682X ] ; 1997.
English descriptors
- KwdEn :
- Teeft :
- Acoustics, Amplitude envelope, Amplitude modulation, Amplitude ratio, Amplitude ratios, Array processor card, Carrier frequency, Centre frequency, Constant envelope, Diffuse sound field, Distortion, Elsevier science, Envelope changes, Excitation signal, Experimental fmtf, Final frequency, Final value, Fmtf, Fmtf function, Fmtf functions, Frequency, Frequency change, Frequency changes, Frequency deviation, Frequency interval, Frequency modulation transfer function, Histogram classes, Initial frequency, Instantaneous, Instantaneous frequency, Instantaneous frequency changes, Instantaneous frequency distortion, Main factors, Maximum value, Modulating function, Modulation, Modulation attenuation, Modulation frequencies, Modulation frequency, Modulation frequency increase, Modulation transfer function, Narrow band condition, Open circles, Original signal, Other hand, Phase distortions, Phase time, Pitch changes, Real signal, Reverberation, Reverberation time, Reverberation times, Room acoustics, Room response, Room reverberation time, Room transmission properties, Room2, Rutkowski, Sampling frequency, Signal distortion, Signal distortions, Signal frequency distribution, Solid line, Sound changes, Sound transmission, Speech intelligibility, Step frequency change, Test signal parameters, Testing signal, Testing signals.
Abstract
Room transmission properties for the frequency modulated (FM) band of noise have been investigated and compared with the calculated amplitude modulation (AM) transfer function. Room modulation attenuation for both kinds of modulation is taken into account. The comparison of the calculated average values of the modulation transfer shows that the mean modulation attenuation is comparable for the AM and FM modulation and in a similar way depends on the reverberation time and the modulation frequency. Selected experimental results are also presented to explain room transmission properties for FM signals.
Url:
DOI: 10.1016/S0003-682X(96)00028-X
Affiliations:
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Le document en format XML
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Mickiewicz University, Matejki 48/49, PL 60-769, Poznań</wicri:regionArea><wicri:noRegion>Poznań</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Applied Acoustics</title><title level="j" type="abbrev">APAC</title><idno type="ISSN">0003-682X</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1997">1997</date><biblScope unit="volume">49</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="307">307</biblScope><biblScope unit="page" to="320">320</biblScope></imprint><idno type="ISSN">0003-682X</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0003-682X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Frequency modulated sound transmission</term><term>distortions in a frequency domain</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Acoustics</term><term>Amplitude envelope</term><term>Amplitude modulation</term><term>Amplitude ratio</term><term>Amplitude ratios</term><term>Array processor card</term><term>Carrier frequency</term><term>Centre frequency</term><term>Constant envelope</term><term>Diffuse sound field</term><term>Distortion</term><term>Elsevier science</term><term>Envelope changes</term><term>Excitation signal</term><term>Experimental fmtf</term><term>Final frequency</term><term>Final value</term><term>Fmtf</term><term>Fmtf function</term><term>Fmtf functions</term><term>Frequency</term><term>Frequency change</term><term>Frequency changes</term><term>Frequency deviation</term><term>Frequency interval</term><term>Frequency modulation transfer function</term><term>Histogram classes</term><term>Initial frequency</term><term>Instantaneous</term><term>Instantaneous frequency</term><term>Instantaneous frequency changes</term><term>Instantaneous frequency distortion</term><term>Main factors</term><term>Maximum value</term><term>Modulating function</term><term>Modulation</term><term>Modulation attenuation</term><term>Modulation frequencies</term><term>Modulation frequency</term><term>Modulation frequency increase</term><term>Modulation transfer function</term><term>Narrow band condition</term><term>Open circles</term><term>Original signal</term><term>Other hand</term><term>Phase distortions</term><term>Phase time</term><term>Pitch changes</term><term>Real signal</term><term>Reverberation</term><term>Reverberation time</term><term>Reverberation times</term><term>Room acoustics</term><term>Room response</term><term>Room reverberation time</term><term>Room transmission properties</term><term>Room2</term><term>Rutkowski</term><term>Sampling frequency</term><term>Signal distortion</term><term>Signal distortions</term><term>Signal frequency distribution</term><term>Solid line</term><term>Sound changes</term><term>Sound transmission</term><term>Speech intelligibility</term><term>Step frequency change</term><term>Test signal parameters</term><term>Testing signal</term><term>Testing signals</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Room transmission properties for the frequency modulated (FM) band of noise have been investigated and compared with the calculated amplitude modulation (AM) transfer function. Room modulation attenuation for both kinds of modulation is taken into account. The comparison of the calculated average values of the modulation transfer shows that the mean modulation attenuation is comparable for the AM and FM modulation and in a similar way depends on the reverberation time and the modulation frequency. Selected experimental results are also presented to explain room transmission properties for FM signals.</div></front></TEI><affiliations><list><country><li>Pologne</li></country></list><tree><country name="Pologne"><noRegion><name sortKey="Rutkowski, Leon" sort="Rutkowski, Leon" uniqKey="Rutkowski L" first="Leon" last="Rutkowski">Leon Rutkowski</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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