FEDL2302DIGEST-05
OKI Semiconductor
ML2302
FUNCTIONAL DESCRIPTION
Voice Synthesis Algorithms
The ML2302 supports five PCM algorithms to process various kinds of voices.
1. 4-bit OKIADPCM algorithm
2. 4/5/6/7/8-bit OKIADPCM2 algorithm
3. 2-bit OKIADPCM algorithm
4. 8/16-bit straight PCM algorithm
5. 8-bit OKI Non-linear PCM algorithm
Voice Synthesis Algorithms and Sampling Frequencies during Recording and Playback
The relationships between the voice synthesis algorithms and sampling frequencies available during recording and
playback are shown in Tables 1.1.1 and 1.1.2.
Table 1.1.1 During Recording
fsam (kHz)
Voice
4.0
5.3
6.1
6.4
8.0
9.8 10.7 11.6 12.8 14.2 16.0 18.3 21.3 25.6
synthesis algorithm
4-bitADPCM
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
° ° ° ° ° ° ° ° °
° ° ° ° ° ° ° ° °
° ° ° ° ° ° ° ° °
4/5/6/7/8-bitADPCM2
2-bitADPCM2
8-bit straight PCM
16-bit straight PCM
8-bit Non-linear PCM
° ° ° ° ° ° ° ° ° ° ° ° ° °
×
×
×
×
° ° ° ° ° ° ° ° ° ° ° °
×
×
×
×
×
×
×
×
×
×
×
×
Table 1.1.2 During Playback
fsam (kHz)
Voice
4.0
5.3
6.1
6.4
8.0
9.8 10.7 11.6 12.8 14.2 16.0 18.3 21.3 25.6
synthesis algorithm
4-bitADPCM
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
° ° ° ° ° ° ° ° °
° ° ° ° ° ° ° ° °
° ° ° ° ° ° ° ° °
4/5/6/7/8-bitADPCM2
2-bitADPCM
8-bit straight PCM
16-bit straight PCM
8-bit Non-linear PCM
° ° ° ° ° ° ° ° ° ° ° ° ° °
×
×
×
×
° ° ° ° ° ° ° ° ° ° ° °
° ° ° ° ° ° ° ° ° ° ° °
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OKI [ OKI ELECTRONIC COMPONETS ]
