Voice recording in the context of Sound effect

A portable media player (PMP) or digital audio player (DAP) is a portable consumer electronics device capable of storing and playing digital media such as audio, images, and video files. Normally, they refer to small, battery-powered devices utilising flash memory or a hard disk for storing various media files. MP3 players has been a popular alternative name used for such devices, even if they also support other file formats and media types other than MP3 (for example AAC, FLAC, WMA).

Generally speaking, PMPs are equipped with a 3.5 mm headphone jack which can be used for headphones or to connect to a boombox, home audio system, or connect to car audio and home stereos wired or via a wireless connection such as Bluetooth, and some may include radio tuners, voice recording and other features. In contrast, analogue portable audio players play music from non-digital media that use analogue media, such as cassette tapes or vinyl records. As devices became more advanced, the PMP term was later introduced to describe players with additional capabilities such as video playback (they used to also be called "MP4 players"). The PMP term has also been used as an umbrella name to describe any portable device for multimedia, including physical formats (such as portable CD players) or handheld game consoles with such capabilities.

A voicemail system (also known as voice message or voice bank) is a computer-based system that allows callers to leave a recorded message when the recipient has been unable (or unwilling) to answer the phone. Calls may be directed to voicemail manually or automatically. The caller is prompted to leave a message that the recipient can retrieve at a later time.

Voicemail can be used for personal calls, but more complex systems exist for companies and services to handle the volume of customer requests. The term is also used more broadly to denote any system of conveying stored telecommunications voice messages, including using older technology like answering machines.

A spoken language is a structured system of communication that is produced with articulate sounds using the vocal tract, sometimes specifically also called an oral language or vocal language to differentiate it from written language and possibly from sign language. However, the term "spoken language" may also be used to incorporate sign languages, referring to any natural language or forms of language other than transcribed or written ones.

Spoken (including signed) language is traditionally ephemeral, only communicated once, and not retrievable after being produced—notwithstanding modern voice-recording and audiovisual technology. This differs from written language, whose explicit purpose is to represent an enduring message on a physical surface. The major written languages of the world developed secondarily from naturally-emerged spoken languages. As such, spoken languages are usually the more relevant focus to the study of human history, the origin of language, and language acquisition.