4 , STOP

4.1 4.1.1 19

CD---(Audio)

4.1.2 ,

Hello4-14-1 Hello

4.1.3 (Hz)(kHz)50005000Hz5kHz300Hz3000Hz20 Hz(Subsonic)20Hz20kHz(Audio)20kHz(Ultrasonic)

(4-2) (dB)4-2

4.1.4 A/DD/A A/DD/AAAnalog()DDigital ()A/D A/D4-3A/DD/A4-4CD A/D

4-3 8A/D4-4 A/DD/A

4.1.5

4.1.6

4-54-5 (AUDIO TEST)

SNR(Signal to Noise Ration)(dB)

MOS(Mean Opinion Score)MOS4. 4.1 MOS

MOS5(Excellent)4(Good)3(Fair)2(Poor)()1(Unacceptable)()

4 CD-DASuper HiFi(High Fidelity) FM(Frequency Modulation) AM(Amplitude Modulation) (Telephone) 4CD-DA

4-6 44-64

4.2 4-7 A/DA/D 4-7

4.2.1 2040(Shannon) (Sampling)

Nyquist CDPCM8000CD44.1kHz22050Hz

4.2.2 ()? 16(bit) 828(quantization levels)16,216

4.2 4.2

(Hz)(kHz)()

200-34008850-7000161620-15k37.81620-22k44.116

4.2.3 4-81000/1/1000A/D09100 9 4-8 1000Hz10

D/A4-84-94-9() 4-9 D/A

2000/204000/404-104-11D/A()

4-10 2000Hz204-11 4000Hz40

4-12 2000Hz20D/A 4-122000Hz20D/A

4.2.4 (PCM)PCM

ITU G.71135dB0.5

ISOCD-DA24()CIRCCD4.3CD-DA 4.3 CD-DA

QP41124124

4.3 4.3.1

4-134-13

()()

PCMADPCMATC

LPC(Linear Predictive Coding) CELPMP-LPCVSELP

4.3.2 PCM 1939Alec ReevesPCM(Pulse Code Modulation)PCM1962BellATTPCM(T1) PCMPCMPCMPCMPCM

4-14PCMA/D (B)BPCM

4-14

PCM (-Law)()()A(A-Law)()()

x(n)4-15PCM AA 8kHz16APCM864kb/sITU()G.711

4-15

4.3.3 CCITT1972G.711APCM64kb/s1984G.721ADPCM32kb/s3003400Hz(50Hz7kHz)CCITTG.72264kb/sISDNB

ISDNB(Bbearer) ISDN----BDBD 64KbpsB16KbpsD128Kbps23B64KbpsD30BD

CCITT198916kb/sAT&T Bell16kb/s(LD-CELP)(GSM)13kb/s(RPE-LTP)1989CTIACELPISO(MPEG)MPEGMPEGMPEGMPEG

MPEG12,4.448kHz44.1kHz32kHz32MPEG3MPEGMPEG32kb/s448kb/s

MUSICAM ASPEC 4.4 MPEG

(kb/s)1MUSICAM 1:4 384

2MUSICAM 1:6 1:8256 1923ASPEC1:10 1:12128 112

4.3.4 WAVVOCMP3 WAV WAVWindowsWAVWindowsWindowsWAV

WAVRIFF (Resource Interchange File Format)RIFFPCMWAV3 WAVMSADPCMA S=R D (r/8) N

VOC VOCCreative(Sound Blaster)Creative Sound Blaster()WindowsDOSCCITT A WAVVOCASCII

MPEG.MP1/.MP2/.MP3 MPEGMPEGMPEG(MPEG Audio Layer 1/2/3),MP1MP2MP3 MPEGMP1MP2416181MP3101121 MP3Internet(4-16),MP3

4-16 MP3InternetWINAMPMP3(4-17)4-17 MP3WINAMP

MP3WinampMP3MP3MMXMP3Winplay3MusicMatch RealAudio.RA/.RM/.RAM RealAudioRealNetworks(Streaming Audio)RealNetworksRealMedia28.8kb/sISDNCD

AIFF.AIF/.AIFF AIFF(Audio Interchange File Format),Macintosh

4.4 ()MPC

4.4.1 ADLIB- PC19842090 ADLIB,ADLIB

Creative (CREATIVE)1989ComdexPCSound Blaster Sound BlasterISA8D/ASound Blaster ProMPC1Sound Blaster Pro

Creative16bit44KHzSound Blaster 16CD2090 Creative1995Sound Blaster Awe 32SB Awe 32321MBMIDI(MIDIYAMAHAFM)

Sound Blaster 32Sound Blaster AWE643264326416SB AWE64Wave Effect28MBSound Font64MIDI

4.4.2 (4-18) 4-18

- MIDICODEC DSP(4-19) DSP

A/DDSPPCMDPCMADPCMWAVWAVDSPD/A 4-19 ESS

-CODEC CODEC IntelAC97CODEC CODECMIDICD

I/D(/),4-20FM(mute)()CD-ROMI/OI/O

4-20 Sound Blaster PCI64

CODECDACDAC CODEC20Hz20KHz PCMIDIMIDIMIDI(FM)(Wave Table)

DMAPCII/OIRQDMA 3.5mm (MIC IN)

(LINE IN)(LINE OUT)(SPK OUT) (REAR OUT) MIDI/(MIDI/Joystick)MIDI (SPDIF OUT)AC-3DTS (SPDIF IN)

4.4.3 Line inCODECA/D CODECD/A MIDID/A

4.4.4 CD44.1KHz16MIDI MIDIMIDI(.WAV), .MID.WAV.MID,MIDI MIDI,FMFM, ,

4(4.1)

DVDDVDDolby Digital (AC3)5.1 5.15.14.180Hz 5.1

WAVEMP3MIDIMP3OICQICQWAVE()PCIWave

I/O (LINE IN)(LINE OUT)(SPEAKERS OUT)MIDI(MIDI/JOYSTICK PORT)4-214-21

I/ODMAIRQ(Jumper) WAVCDMIDIWAV

ISA8Mb/sPCIISA,,,PCI133Mb/s,, PCIFMPC 98ISAPCI

4.4.5 CoolEdit CoolEdit ProSyntrillium 5WAV

3D/DSP64 56 Sound Forge Sound ForgeSonic FoundryFlashFlash, Sound Forge(wav)(avi)

Sound Forge, WAVWMARMAVIMP3Sound Forge 4.5 MIDI MIDI

4.5.1 MIDI MIDI(Musical Instrument Digital Interface)MIDIMIDIMIDI MIDI, MIDIMIDIMIDIMIDI

MIDI,,MIDI,, MIDIMIDIMIDIMIDIMIDI

4.5.2 MIDI MIDI MIDIMIDI MIDIMIDI

MIDI,4-22 4-22 MIDI

MIDIMIDI () 4-23

4-23

4-24 MIDI MIDIMIDI4-24

MIDIMIDI 4-25USBMIDI

4-25 USBMIDI

() MIDIRoland JV1080Yamaha MU100R4-26

4-26 ROLAND JV1080

128GMMIDI(Sound Blaster Live) Yamaha S-YXG100, Roland VSC88MIDIMIDIMIDI

(Sequencer) MIDI Yamaha QY7004-27 Cakewalk()

4-27 YAMAHA QY700

4.5.3 MIDI MIDIMIDIMIDIMIDI.MIDMIDIMIDIMIDIMIDI4-28

4-28 MIDI

MIDIMIDI MIDIMIDIMIDIMIDIMIDI

MIDINote On MessageMIDI()(Note NumberC=60)(Velocity38) Note-On/Channel # (1001 CCCC) Note Number (0NNN NNNN) Velocity (0VVV VVVV) MIDINote-Off MessageMIDI()Note-Off/Channel # 1001 CCCC Note Number (0NNN NNNN) Velocity (0VVV VVVV)

MIDIMIDIMIDIMIDIMIDIMIDI(synthesizer)MIDI

4.5.4 FM DSPMIDIFM FM FM2080John ChowningFM

FM FMROMROMFM

FM F(t)

AIcm FM183189FMFM9FM12(l12)6FM(1318)5 36() FM,(Vibrato)(Tremdo)

FMFM44.1kHz16(CD-DA)

ROMSound Blaster AWE32EMU800016MIDI32FM ROMRAMCPUCPUMIDI

4.5.5 GM-MIDI MIDI()140560MIDI MIDI GM(General MIDI Instrument Map)GM16812810MIDI(MIDI Channel 10)(16) (Sound Effects) MIDIGM

4.5.6 MIDI MIDIMIDI(PianoMusic Lesson) MIDIMIDI

CakewalkTwelve Tone SystemsMIDICakewalkMIDICakewalk Pro Audio9.06425632bitCakewalk Pro Audio MIDIMIDICakewalk16MIDI(MCI)

Cakewalk Pro Audio ()CakewalkMIDI MIDI

4.6 4.6.1 207030

() TTS(Text-to-Speech)SR(Speech Recognition)TTSSRTTSSR

NSI D 4.6.2 -TTS TTS E

TTSTTS TTSTTSTTSTTSWAV

20602070 TTSTTS

TTS TTS TTS

TTS ()() TTS

TTSTTS TTSTTS TTSTTSEmail

4.6.3 TTS (Continuous Speech Recognition)

ttwo, true, butter

4.6.4 4-29

Analysis System 4-29

Pattern Training (DTW)(HMM) Pattern Classifier Decision Logic

4.6.5 -ViaVoice (Continuous Speech Recognition)

IBM1319979IBMViaVoiceIBM301999ViaVoice

ViaVoice, ViaVoiceWindows150903200028000ViaVoice ViaVoice

4.6.6 4

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