Motorola E398 series Manual do utilizador - Página 23

Procurar online ou descarregar pdf Manual do utilizador para Telefone sem fios Motorola E398 series. Motorola E398 series 29 páginas. Tri-band wireless telephone
Também para Motorola E398 series: Manual de serviço (44 páginas), Manual do utilizador (31 páginas), Ficha de dados (3 páginas), Manual de resolução de problemas e depuração (12 páginas)

Sound

Multifunction Transducer Frequency Response - In Application

-10

-20

-30

100

However, the transducer will also reproduce vibration signals at its vibration resonant

frequency of 157Hz. The nearest synthesized note is D#1 (i.e. the first D# below Middle

C). For long duration continuous signals at the vibration resonant frequency, the

maximum amplitude should be restricted to 15dB below maximum to avoid distortion. For

short transient vibration signals, such as a bass beat, the amplitude may be increased

without distortion.

NOTE: The use of MIDI notes below 800 Hz may cause a decrease in volume when playing the note.

Always test your audio on an actual device to ensure the accuracy of the sound you want to produce.

MP3 Audio Guidelines

MP3 (MPEG Audio Layer 3) is an audio compression technology that is part of the MPEG-

1 and MPEG-2 specifications. Developed in Germany in 1991 by the Fraunhofer Institute,

MP3 uses perceptual audio coding to compress CD-quality sound by a factor of 12, while

providing almost the same fidelity. Because MP3 audio is digitized, not synthesized,

reproduction (disregarding speaker quality) is identical on all devices. Therefore MP3 ring

tones provide a near-CD quality audio experience for listeners as opposed to their MIDI

counterparts which differ greatly from device to device.

The following recommendations should be used when designing MP3 audio clips for use

in the phone:

1000

Frequency, Hz

10000