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Time stretching is the process of changing the speed or duration of an audio signal without affecting its pitch. Pitch scaling is the opposite: the process of changing the pitch without affecting the speed. Pitch shift is pitch scaling implemented in an effects unit and intended for live performance. Pitch control is a simpler process which ...
Sound quality is typically an assessment of the accuracy, fidelity, or intelligibility of audio output from an electronic device. Quality can be measured objectively, such as when tools are used to gauge the accuracy with which the device reproduces an original sound; or it can be measured subjectively, such as when human listeners respond to ...
Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording . Acoustic analog recording is achieved by a ...
where denotes the speed of sound. This area becomes smaller than a human head above 600 Hz for first order or 1800 Hz for third-order. Accurate reproduction in a head-sized volume up to 20 kHz would require an order of 32 or more than 1000 loudspeakers.
Advanced Audio Coding is designed to be the successor of the MPEG-1 Audio Layer 3, known as MP3 format, which was specified by ISO / IEC in 11172-3 ( MPEG-1 Audio) and 13818-3 ( MPEG-2 Audio). Blind tests in the late 1990s showed that AAC demonstrated greater sound quality and transparency than MP3 for files coded at the same bit rate.
Each unit features an iPod Universal Dock connector, a built-in slot-loading CD, and FM radio all controllable by included remote. An LED display under the front cover shows input and track ...
In 2002, Archos released the first portable media player (PMP), the Archos Jukebox Multimedia [ 47] with a little 1.5" colour screen. The next year, Archos released another multimedia jukebox, the AV300, with a 3.8" screen and a 20 GB hard drive. In the same year, Toshiba released the first Gigabeat.
t. e. The fifth generation iPod Touch (stylized and marketed as the iPod touch, and colloquially known as the iPod Touch 5G, iPod Touch 5, or iPod 5) is a mobile device designed and marketed by Apple Inc. with a touchscreen-based user interface. The successor to the 4th-generation iPod Touch, it was unveiled at Apple's media event alongside the ...