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Audio restoration is the process of removing imperfections (such as hiss, impulse noise, crackle, wow and flutter, background noise, and mains hum) from sound recordings. Audio restoration can be performed directly on the recording medium (for example, washing a gramophone record with a cleansing solution), or on a digital representation of the ...
Apple stated that replacing the device's battery would restore full performance, and also announced that it would offer a US$50 discount (from $79 to $29) on battery replacements for iPhone 6 and 6S from January through December 2018, and that it would include more prominent battery health information in later versions of iOS.
The updated MacBook Pro 13- and the 15-inch would each have up to a claimed 7 hours of battery life, while the 17-inch would keep its 8-hour capacity. [32] [34] Some sources even reported up to eight hours of battery life for the 13- and 15-inch MacBook Pro computers during casual use, [35] while others reported around six hours. [27]
As part of the Mac transition to Intel processors, Apple released a 13-inch laptop simply named "MacBook", as a successor to the PowerPC-based iBook series of laptops. . During its existence, it was the most affordable Mac, serving as the entry-level laptop that was less expensive than the rest of the Mac laptop lineup (the MacBook Pro portable workstation, and later the MacBook Air ultra-port
A sulfated battery has higher electrical resistance than an unsulfated battery of identical construction. As related by Ohm's law, current is the ratio of voltage to resistance, so a sulfated battery will have lower current flow. As the charging process continues, such a battery will reach the charger's preset cut-off more rapidly, long before ...
The updated MacBook Pro 13- and the 15-inch would each have up to a claimed 7 hours of battery life, while the 17-inch would keep its 8-hour capacity. [44] [46] Some sources even reported up to eight hours of battery life for the 13- and 15-inch MacBook Pro computers during casual use, [47] while others reported around six hours. [39]
The MacBook and the 13-inch MacBook Pro use a 60 W MagSafe charger, whereas the 15- and 17-inch MacBook Pro use an 85 W version. The MacBook Air used a lower-powered 45 W version. According to Apple, an adapter with a higher wattage than that originally provided may be used without problems. [12]
Software engineer Mark Lentczner used the Apple Sound Chip, his innovation of sound for the Macintosh, to play the C major fourth chord used in the Macintosh II that was programmed in software. [11] Variations of this sound were employed until Apple sound designer Jim Reekes created the startup chime in the Quadra 700 through the Quadra 800. [12]