SANYO Semiconductor HOME > Product Information > Applications > Cell Phones: Portable Electronic Devices > Earphone microphone ICs / Noise Cancel ICs
Applications
An industry first*! Single-chip IC package for delivering earphone microphone functions
using advanced analog-digital technology. Conversations can be held using only the earphones.
* As of October 3 2006
Overview
Using a system IC for analog-digital audio signal processing with an original 16-bit DSP (FAVOR-43) as the core, SANYO has developed the LC70700W, the world's first IC for earphone mics capable of simultaneous audio I/O using just earphones or headphones on the ears without a separate mic during calls using a PHS, mobile telephone, transceiver, etc.
Use of the LC70700W allows earphones to also be used as a mic. Audio generated by the eardrum can be directly input to earphones. The LC70700W delivers clear conversations without picking up surrounding noise even in a highly noisy environment. This allows for a smart, hands-free system with no microphone required.
Features
Hands-free system with no microphone needed. Realizes a smart, hands-free system that does not need a microphone for audio input.
Noise-cansell LSI LC70300W
Highest noise canceling capability in the industry*, noise components reduced to less than 1/10.
Most natural and clear sound quality reproduced.
*1:As of October 26,2007.
Existing products made by other manufacturers reduce the noise down to between 1/4 and 1/5(according to a SANYO Semiconductor study).
Features
- Highest noise canceling performance in the industry(see Note 1),noise components reduced to less than 1/10.
Uses an original algorithm developed by SANYO. - Noise-canceled sound reproduced in its original and natural condition.
- Noise canceling can be set to any level.
Applicable to a wide variety of operating environment and applications. - High degree of freedom inherent in design with the wealth of interfaces incorporated.
The IC comes with an A/D interface, a D/A interface, and a bidirectional interface, enabling analog and digital inputs and outputs to be combined in any way.
Road map
