Search results
Results from the WOW.Com Content Network
An Audio-Technica AT815a shotgun microphone An Audio-Technica AT95E moving magnet phono cartridge AT3035 microphone. One of their most famous products was a battery-operated, portable record player called Mister Disc that was sold in the US in the early 1980s.
The TASCAM 85 16B analog tape multitrack recorder can record 16 tracks of audio on 1-inch (2.54cm) magnetic tape. Professional analog units of 24 tracks on 2-inch tape were common, with specialty tape heads providing 8, or even 16 tracks on the same tape width (8 tracks for greater fidelity).
The result was the 3M Digital Audio Mastering System, which consisted of a 32-track deck (16-bit, 50 kHz audio) running 1-inch tape and a 4-track, 1/2-inch mastering recorder. 3M's 32-track recorder was priced at $115,000 in 1978 (equivalent to $537,000 in 2023).
These techniques can also be used to transpose an audio sample while holding speed or duration constant. This may be accomplished by time stretching and then resampling back to the original length. Alternatively, the frequency of the sinusoids in a sinusoidal model may be altered directly, and the signal reconstructed at the appropriate time scale.
The first edition of ITU-T P.863 [2] entered into force in 2011. An Application guide for Recommendation ITU-T P.863 was approved in 2019 and published as ITU-T P.863.1. An Application guide for Recommendation ITU-T P.863 was approved in 2019 and published as ITU-T P.863.1.
The control track is used to fine-tune the tape speed during playback, so that the high speed rotating heads remained exactly on their helical tracks rather than somewhere between two adjacent tracks (known as "tracking"). Since good tracking depends on precise distances between the rotating drum and the fixed control/audio head reading the ...
The mel scale (after the word melody) [1] is a perceptual scale of pitches judged by listeners to be equal in distance from one another. The reference point between this scale and normal frequency measurement is defined by assigning a perceptual pitch of 1000 mels to a 1000 Hz tone, 40 dB above the listener's threshold.
Sound power or acoustic power is the rate at which sound energy is emitted, reflected, transmitted or received, per unit time. [1] It is defined [2] as "through a surface, the product of the sound pressure, and the component of the particle velocity, at a point on the surface in the direction normal to the surface, integrated over that surface."