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Timeline of audio formats. An audio format is a medium for sound recording and reproduction. The term is applied to both the physical recording media and the recording formats of the audio content —in computer science it is often limited to the audio file format, but its wider use usually refers to the physical method used to store the data.
Digital recording. Audio levels display on a digital audio recorder ( Zoom H4n) In digital recording, an audio or video signal is converted into a stream of discrete numbers representing the changes over time in air pressure for audio, or chroma and luminance values for video. This number stream is saved to a storage device.
Early digital audio machines had disappointing results, with digital converters introducing errors that the ear could detect. [36] Record companies released their first LPs based on digital audio masters in the late 1970s. CDs became available in the early 1980s. At this time analog sound reproduction was a mature technology.
Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence. For example, in CD audio, samples are taken 44,100 times per second, each with 16-bit sample depth. Digital audio is also the name for ...
Digital audio workstation. Music production using a digital audio workstation (DAW) with multi-monitor set-up. A digital audio workstation ( DAW / dɔː /) is an electronic device or application software used for recording, editing and producing audio files. DAWs come in a wide variety of configurations from a single software program on a ...
Nero Digital Audio, Apple CoreAudio (via QuickTime, iTunes or afconvert [2]) FAAC (encoding only), FAAD2 (decoding only), FFmpeg, Audiocogs [3] (decoding only), Fraunhofer FDK AAC: Digital TV service, Digital Radio, Internet streaming Yes AAC-LD/AAC-ELD MPEG-4 SLS: Yes FairPlay (.m4p only, discontinued) AC-3: Dolby Laboratories: 1992 ATSC A52 ...
Analog. around 3–5 minutes per side. 45 rpm record. Analog. often around 4 minutes ( EP: 7 minutes) per side, up to 6 per side, in some cases even a few minutes longer. LP record. Analog. typically 15–25 minutes per side (30 minutes per side for classical & spoken word), although 45 minutes is possible with tight groove spacing and no ...
Podcast. A podcast is a program made available in digital format for download over the Internet. [ 1][ 2][ 3] For example, an episodic series of digital audio files that users can download to a personal device to listen to at a time of their choosing. Podcasts are primarily an audio medium, [ 4] but some distribute in video, either as their ...