Yamaha announced that it would start mass production and
shipments of its new Audio and Voice Hub CODEC IC for Smartphones and Tablet
PCs in October 2011.
Yamaha began shipments of Audio CODEC ICs
for Mobile Phones in 2005. Demand has risen for CODECs that act as a hub for
analog and digital signal processing, with an increasing variety of audio and voice
signal types compatible with smartphones.
There is increasing demand for Noise Suppressors, which
cut the amount of ambient noise when speaking on the phone, as well as Echo
Cancellers, which make hands-free operations possible. There is also a growing
market for an Audio CODEC IC with all of these functions built in.
The new YMU828 is an Audio and Voice Hub CODEC IC for
Smartphones and Tablet PCs that packs hub functionality for processing of
various types of audio signals as well as Single or Dual Mic Noise Suppression
and Echo Cancellation into one chip.
The Noise Suppressor and Echo Canceller for Single or
Dual Microphones removes both stationary and non-stationary noise, improves
audio quality both for outgoing and incoming voice, and increases quality with
the built-in AudioEngine DSP . The built-in Dual Mic Noise Suppressor is
an industry-first for an Audio CODEC IC.
An optimized Echo Canceller and Noise Suppressor can make
high-performance hands-free operation possible, even with the micro speaker
which is used in most mobile phones. The Noise Suppressor can be used both for
outgoing and incoming voice and, with the dual use of Speech Speed Control
functionality and improved audio quality made possible by AudioEngine
technology, clear, easy-to-understand audio is now a reality for both the
speaker and listener.
The AudioEngine technology DSP processing creates
high-quality source audio for improved audio quality and performance in digital
equalizers, Harmonic Enhancer and dynamic range controllers, making high-grade
audio output possible even with miniature speakers and headphones. It also
makes devices compatible with Dolby Mobile 2.
The CODEC includes all necessary circuits such as stereo DAC, 3-channel ADC (stereo +
mono), a Class G cap-less stereo headphone amplifier, a receiver amplifier, 3
independent digital audio input/output, 3 microphone input, digital microphone
input, analog input/output, a mixer, volume control and more in easy-to-use
In the power saving mode, the CODEC can minimize battery
usage by saving power on a block-by-block basis, making it the optimal choice
in terms of input and output for a range of sound sources and audio signals for
smartphones and mobile devices including voice, music, analog/digital TV and
By Telecomlead.com Team