SB3231 Datasheet | onsemi

Description ON Semiconductor’s RHYTHM t SB3231 hybrid is a trimmer- configurable DSP system based on a four- channel pression circuit featuring Adaptive Feedback Cancellation, Adaptive Noise Reduction, and directional processing. Based on a phase cancellation method, Rhythm SB3231’s Adaptive Feedback Reduction algorithm provides added stable gain to enable extra gain and user fort. It Features rapid adjustment for dynamic feedback situations and resistance to tonal inputs. Rhythm SB3231’s Adaptive Noise Reduction monitors noise levels independently in 64 individual bands and employs advanced psychoacoustic models to provide user fort. The directional processing system utilizes a pair of microphones to create a fully customizable static polar pattern, such as bidirectional, cardiod, hyper- cardiod and super- cardiod. In addition to these adaptive algorithms, Rhythm SB3231 also supports the following Features : up to four channel WDRC, low- distortion pression limiting, cross fading between audio paths for click- free memory changes, eight- band graphic equalizer, eight configurable generic biquad filters, programming speed enhancements, in- channel squelch to attenuate microphone and circuit noise in quiet environments, optional peak clipping, flexible pression adjustments, volume control, rocker switch, noise generation for Tinnitus treatment, and industry- leading security Features to avoid cloning and software piracy. A trimmer interface supports manual circuit configuration. It continuously monitors trimmer positions and translates them into the hearing- aid parameters of choice. A Serial Data or I2C Interface provides full programmability at the factory and in the field. The Rhythm SB3231 hybrid contains a 256 kbit EEPROM intended for programmable and trimmer based devices. Features - Directional Processing - Adaptive Noise Reduction - Adaptive Feedback Cancellation - WDRC pression with Choice of 1, 2 or 4 Channels of pression - Auto Telecoil with Programmable Delay -...