ALO Audio一款即插即用的USB DAC——Key，这么小巧当做钥匙扣也毫无累赘！ USB 2.0接口最高支持32bit/384kHz，频率响应5Hz-150kHz ±1dB，3.5mm立体声微型输出提供2Vrms至前置放大器。

Schools must have a DAC Activation Key. The AP coordinator will provide the proctor with this code before exam day. This is an eight-digit alphanumeric code needed to unlock the app. This code is unique to each school. See Activating the DAC App (page 6) for information on where to find the DAC Activation Key.

2016年9月24日 · ALO the key USB DAC，很小的一个玩意，价格也不贵，XMOS模块，要装一个驱动就能用，最高支持32bit 384khz的高清PCM，不支持DSD。 输出只有一个3.5的LO口，原来板载的声卡有 ...

Before the DAC app can be used for AP testing, the app must be unlocked using a unique school-specific eight-digit code called a DAC Activation Key. The DAC Activation Key identifies the school and prevents unauthorized use of the DAC app.

2025年1月2日 · 打开SDK对应的cpu/brxx/tools/ACxxxN_config_tool，进入配置工具入口—>选择编译前配置工具—>提示音配置。 打开以上界面按步骤添加自己需要的*.mp3格式的源文件，转换成需要的主要格式。 要注意文件的路径，SDK中默认的路径可能和本地保存的路径不同，要改成SDK当前的绝对路径。 并在tone_player.h文件中定义文件名和路径：文件名和配置工具中第4步添加的提示音的名字要一致。 #define TONE_NUM_0 TONE_RES_ROOT_PATH"tone/0.*" 6.5. 通用 …

Each certified device must be configured with a unique Device Attestation Certificate (DAC) and its corresponding DAC private key, which will be checked by a commissioner to add this device to its Matter fabric.

oundKey unlocks your audio, by accessing the raw digital files on your device and processes them using our special hi-fi DAC and amplifier. The analogue music output from soundKey delivers much more detail, more impact, greater precision and a good dollup of WOW.

2016年3月14日 · 这DAC因为用的是电脑电源供电，所以不同电脑对它影响很大的。我试过苹果MAC;SONY笔记本和Lenovo的E535, 苹果MAC;SONY笔记本都非常有磁性, Lenovo的E535的声音很普通。

2018年4月27日 · stm32dac简介 数字/模拟转换模块(dac)是12位数字输入，电压输出的数字/模拟转换器。dac可以配置为8位或12位模式，也可以与dma控制器配合使用。da

2019年11月19日 · Using a dongle to attach an external DAC to a smartphone is far from uncommon, but it does rather spoil the ‘much-improved sound with very little fuss’ aesthetic. The soundKey is ready to handle a wide range of digital audio file types, most pertinently MP3, AAC and FLAC – and can handle files up to 24-bit/96kHz resolution.