有关声音频率的知识

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1、1/3OctaveFrequencyChartAudioOctaveRangesWhenUsedTooMuchProducesFrequencyRangeWhenUsedProducesThisEffectThisEffect16Hzto60HzSenseofpower,feltmorethanheardmakesmusicmuddyFundamentalsofrhythmsection,EQingcan60Hzto250Hzmakesmusicboomychangemusicalbalancemakingitfatorthintelepho

2、nequalitytomusic500toLoworderharmonicsofmostmusical250Hzto2KHz1KHzhorn-like,1Kto2KHztinny,instrumentslisteningfatigue3KHzlisteningfatigue,lisping2KHzto4KHzSpeechRecognitionquality,"m”,"v","b"indistinguishableClarityanddefinitionofvoicesandinstruments,4KHzto6KHzmakesmusicsee

3、mclosertolistener,adding6dbsibilanceonvocalsat5KHzmakesentiremixseem3dblouder6KHzto16KHzBrillianceandclarityofsoundssibilance,harshnessonvocalsKeyFrequenciesForInstrumentsInstrumentKeyFrequenciesAttackorpluckat700or1KHz;Bottomat60or80Hz;stringnoiseatBassGuitar2.5KHzBassDrum

4、Slapat2.5KHz;Bottomat60or80HzSnareDrumFatnessat240Hz;Crispnessat1to2.5KHz;Bottomat60or80HzHi-HatandShimmerat7.5to10KHz;Klangorgongsoundatabout200HzCymbalsTomsAttachat5KHz;Fullnessat240HzFloorTomsAttachat5KHz;Fullnessat80or240HzElectricGuitarBodyat240Hz;Clarityat2.5KHzAcoust

5、icBodyat240Hz;Clarityat2.5KHz;Bottomat80or120HzGuitarBassat80or120Hz;Presenceat2.5to5KHz;Crispnessat10KHz;PianoHonky-tonksoundat2.5KHzasbandwidthisnarrowed;Resonanceat40to60HzHornsFullnessat120or240Hz;Shrillat2.5or5KHzFullnessat120Hz;Boominessat200to240Hz;Presenceat5KHz;Voi

6、ceSibilanceat2.5KHz;Airat12to15KHzHarmonicaFatat240Hz,biteat3to5KHzCongaResonantringat200to240Hz;Presenceandslapat5KHzRef…http://www.bcpl.net/~musicman/freqchrt.htmTheFundamentalFrequencies(Pitch)ofNotesPIANOKEYBOARDThenumberbesideeachkeyisthefundamentalfrequencyinunitsofcy

7、clesperseconds,orHertz.OCTAVESForexample,theA4keyhasafrequencyof440Hz.NotethatA5hasafrequencyof880Hz.TheA5keyisthusoneoctavehigherthanA4sinceithastwicethefrequency.OVERTONESAnovertoneisahighernaturalfrequencyforagivenstring.Theovertonesare"harmonic"ifeachoccursatanintegermu

8、ltipleofthefundamentalfrequency.Ref…http://www.vibrationdata.com/piano.htmAnotepla