macOS中没有“硬件哔哔声”。

The functionality you're thinking of is an artifact of very old (pre-1990s) IBM PC-compatible hardware. Before most computers had sound cards, most machines had a small speaker or piezo buzzer connected to one of the channels of a timer chip. This could be used to generate simple tones or beeps. Even after many computers integrated sound cards, it remained common for quite some time for computers to route this output to a separate internal speaker. More recently, many computers, especially laptops, have integrated this functionality into the onboard sound card.

(如果你对PC扬声器接口工作原理的技术细节感到好奇，这里有更多细节。)

这种硬件在苹果电脑中从未存在过。唯一可用的音频输出是通过声卡，macOS中唯一的系统哔哔声是用户的警报声。

在bash中写入echo ^G。要创建^G，按ctrl+v，然后按ctrl+ G。

在OS X终端下，执行命令:osascript -e 'beep'

使用OSA (Open Script Architecture)技术告诉AppleScript执行命令哔哔声。

printf "\a"

如果你看man printf，它会给你一个转义字符列表，包括\a:

\a      Write a <bell> character.

macOS中没有“硬件哔哔声”。

The functionality you're thinking of is an artifact of very old (pre-1990s) IBM PC-compatible hardware. Before most computers had sound cards, most machines had a small speaker or piezo buzzer connected to one of the channels of a timer chip. This could be used to generate simple tones or beeps. Even after many computers integrated sound cards, it remained common for quite some time for computers to route this output to a separate internal speaker. More recently, many computers, especially laptops, have integrated this functionality into the onboard sound card.

(如果你对PC扬声器接口工作原理的技术细节感到好奇，这里有更多细节。)

这种硬件在苹果电脑中从未存在过。唯一可用的音频输出是通过声卡，macOS中唯一的系统哔哔声是用户的警报声。

要了解更多选项，请听并选择

ls /System/Library/Sounds/ | awk '{print $1}' | while read sound; do printf "using $sound...\n"; afplay /System/Library/Sounds/$voice; sleep 0.5; done

ls /System/Library/PrivateFrameworks/ScreenReader.framework/Versions/A/Resources/Sounds/ | awk '{print $1}' | while read sound; do printf "using $voice...\n"; afplay /System/Library/PrivateFrameworks/ScreenReader.framework/Versions/A/Resources/Sounds/$sound; sleep 0.5; done