SOMO-II Audio-Sound 模块 4D Systems 的 SOund MOdule 2 SOMO-II 是紧凑型 Audio-Sound 模块，设计用于所有嵌入式音频声音应用。 SOMO-II 设计用于通过附加部件播放 micro-SD 卡或 USB 2.0 闪存驱动器中的 MP3 音频文件。 板载 16 位 MCU 特别设计用于硬件音频解码。 文件可存储在 micro-SD 或 USB 闪存驱动器根文件夹中。 它每次可存储多达 99 个文件夹、255 首歌曲。 可使用 PC 或便携式计算机将音频文件加载到 micro-SD 卡或 USB 闪存驱动器上，无需额外软件。 SOMO-II 提供两种模式，串行模式或键模式： **串行模式 SOMO-II audio-sound 模块的功能： 紧凑型 16 引脚封装 尺寸：21 x 20.5 x 11.3 mm 24 位 DAC 输出 串行模式或键模式 单声道放大扬声器输出 立体声 DAC 音频输出，用于外部放大器/耳机 板载 micro-SD 适配器 支持多达 32GB micro-SD 或 USB 2.0 闪存驱动器 3.3V 至 5V 直流电压范围（单电源） 4D Systems
The is a tiny Audio-sound Module that can play MP3 audio files stored on a microSD card or USB 2.0 Flash drive with extra components, such as voice and music. The SOMO-II Sound Module 2 features an on board 16-bit MCU, specifically designed for hardware audio decoding. It supports both FAT16 and FAT32 formatted microSD and USB flash drives not on board, requires external components up to 32Gb in size and features a 24-bit DAC output with support for all MP3 bit rates with 8 to 48kHz sampling rate. Files can be stored in the root folder of the microSD or USB Flash drive, else in folders. It supports up to 99 folders and every folder can contain up to 255 songs. Audio files can be easily loaded to the microSD card or USB Flash drive using a PC/Laptop and inserted into the SOMO-II for playback. No external software is required. The compact 16-pin drop-in-module takes up very minimal board space and is ideal for any application that requires embedded audio.
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- Supports all MP3 bit rates 11172-3 & ISO1381303 with samples rates from 8 to 48kHz
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- 24-bit DAC output, dynamic range support 90dB, SNR supports 85dB
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- SERIAL MODE supports a 2-wire 3.3V TTL UART interface to any micro-controller
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- KEY-MODE supports a simple stand-alone operation without a host micro
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- Mono amplified speaker output, capable of driving a 4R speaker at 3W 5V supply
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- Stereo DAC audio output to use with an external amplifier or with headphones
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- On-board microSD memory card adaptor for storing of audio, voice and music files