msm9810b Oki Semiconductor, msm9810b Datasheet - Page 25

• Manufacturer Part Number: msm9810b
• Description: 8-channel Mixing Oki Adpcm Type Voice Synthesis Lsi
• Manufacturer: Oki Semiconductor

Playback Time and Memory Capacity
The playback time is determined by external memory capacity, sampling frequency, and voice synthesis algorithm.
The relationship is described below.
When the sampling frequency is 16 kHz and the voice synthesis algorithm is 4-bit ADPCM and an 8-Mbit ROM is
used, the playback time is calculated as shown below.
In the above equation, the playback time when the phrase control table function is not used is shown.
OKI Semiconductor
Playback time =
Playback time =
1.024 × (Memory capacity – 16) (Kbits)
Sampling frequency (kHz) × bit length
1.024 × (8192 – 16) (Kbits)
(The bit length is 4 bits for ADPCM and ADPCM2 and 8 bits for PCM.)
16 (kHz ) × 4 (bit)
≅ 131 (Seconds)
(Seconds)
FEDL9810BFULL-03
MSM9810B
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