產品說明0
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Sparkfun原廠 Teensy 4 Audio Shield（Rev D1）開發板 (DEV-15845 )
由於 32 位版本的 SGTL5000 和原始 SD 插槽的短缺，創建了 Rev D2
Teensy 3版本 影片：https://youtu.be/A0JRZc5-ruQ
這是 Teensy 4 Audio Shield（Rev D），可以添加到 Teensy 4.0 以用於您的下一個音頻項目。
This is the Teensy 4 Audio Shield (Rev D) that can be added to a Teensy 4.0 for your next audio project. The shield provides you with an easy-to-use tool to add high quality 16 bit, 44.1 kHz sample rate audio to your Teensy. With the audio library provided in the Documents tab, you will be able to use both the input and output simultaneously in order to make a variety of great audio projects, incorporate synth waveforms, effects, and mix multiple sound streams and CD quality audio to your headphones or different line outs!
The Teensy Audio shield utilizes the SGTL5000 stereo codec with headphone amp IC to decode and drive audio files and the Cortex-M4 DSP instructions from the Teensy dev board to provide power to a real-time FFT. Each board is also equipped with 3.5mm audio jack for headphones, a micro-SD card slot for storing audio files, and optional spaces for a 25k potentiometer (volume control) and flash memory chip. The two rows of 14x1 headers are not included to give you the freedom to choose how to connect your audio board with your Teensy..
【Note】: Please be aware that a Teensy 4.0 will also need to be purchased to get your Teensy Audio Shield operational.／注意：請注意，還需要購買 Teensy 4.0 才能讓您的 Teensy Audio Shield 正常運行。
【Note】: In January 2023, Rev D2 was created due to shortages on the 32 bit version of SGTL5000 and the original SD socket. Rev D2 is functionally the same as Rev D, except the the I2C address selection pads. The I2C address is not configurable on the 20 pin SGTL5000 chip.／
＊2023 年 1 月，由於 32 位版本的 SGTL5000 和原始 SD 插槽的短缺，創建了 Rev D2。
＊Rev D2 在功能上與Rev D相同，除了 I2C 地址選擇焊盤。
＊I2C 地址在 20 針 SGTL5000芯片D2板上不可配置。
【Features】:
- 16 bit, 44.1kHz Sample Rate Audio
- Plays Uncompressed WAV and Raw Audio Files
- 4 Channel Software Mixer
- 3.5mm Audio Jack
- micro-SD Card Slot
- Supports Stereo Headphone and Stereo Line-Level Output
Teensy Audio (Rev B) ev B) 版本示意圖：
